Beckwith - M-3425A - Comprehensive Generator Relay Specifcations

Generator Protection M-3425AIntegrated Protection System® for Generators of All SizesPROTECTIONUnit shown with optional M-3925A Target Module and M-3931 HMI (Human-Machine Interface) Module • Exceeds IEEE C37.102 and Standard 242 requirements for generator protection • Protects generators of any prime mover, grounding and connection type • Provides all major protective functions for generator protection including Out-of-Step (78), Split-Phase Differential (50DT), Under Frequency Time Accumulation (81A), Inadvertent Energizing (50/27) and Turn-to-Turn Fault (59X) • Expanded IPScom® Communications Software provides simple and logical setting and programming, including logic schemes • Simple application with Base and Comprehensive protection packages • Load encroachment blinders and power swing blocking for system backup protection (21) to enhance security during system abnormal conditions • Options: Ethernet Connection, Field Ground/Brush Lift-Off Protection (64F/B), Sync Check (25), 100% Stator Ground Fault Protection by low frequency injection (64S) and Expanded I/O (15 additional Output Contacts and 8 additional Control/Status Inputs)–2–M-3425A Generator Protection RelayProtective FunctionsComprehensive PackageThe Comprehensive Package includes all Base Pack-age functions, as well as the following: • Three-zone Phase Distance protection for phase fault backup protection (21). Zone three can be used for Out-of-Step Block-ing. Load encroachment blinders can be applied. • 100% Stator Ground Fault protection us-ing Third Harmonic Neutral Undervoltage (27TN) or (59D) Third Harmonic Voltage Differential (ratio) • Stator Overload (49) (Positive Sequence Overcurrent) • Definite Time Overcurrent (50DT) can be used for split phase differential • Out-of-Step (78) • UnderFrequency Accumulation (81A) • Rate of Change of Frequency (81R) Optional Protective Functions • Sync Check with Phase Angle, ?V and ?F with dead line/dead bus options (25) • Field Ground (64F) and Brush Lift Off (64B) (Includes M-3921 Field Ground Coupler) • 100% Stator Ground protection by low frequency injection (64S). The following equipment is required with the 64S option: – 20 Hz signal generator (430-00426) – Band-pass Filter (430-00427) – 400/5 A 20 Hz CT (430-00428)Protective FunctionsBase Package • Overexcitation (V/Hz) (24) • Phase Undervoltage (27) • Directional power sensitive triple-setpoint Reverse Power, Low Forward Power or Overpower detection, one of which can be used for sequential tripping (32) • Dual-zone, offset-mho Loss of Field (40), which may be applied with undervoltage controlled accelerated tripping • Sensitive Negative Sequence Overcurrent protection and alarm (46) • Instantaneous Phase Overcurrent (50) • Inadvertent Energizing (50/27) • Generator Breaker Failure (50BF) • Instantaneous Neutral Overcurrent (50N) • Inverse Time Neutral Overcurrent (51N) • Three-phase Inverse Time Overcurrent (51V) with voltage control and voltage restraint. • Phase Overvoltage (59) • Neutral Overvoltage (59N) • Multi-purpose Overvoltage (59X) • VT Fuse-Loss Detection and blocking (60FL) • Residual Directional Overcurrent (67N) • Four-step Over/Underfrequency (81) • Phase Differential Current (87) • Ground (zero sequence) Differential Current (87GD) • IPSlogic takes the contact input status and function status and generates outputs by employing (OR, AND, and NOT) boolean logic and a timer.–3–M-3425A Generator Protection RelayStandard Features • Eight programmable outputs and six programmable inputs • Oscillographic recording with COMTRADE or BECO format • Time-stamped target storage for 32 events • Metering of all measured parameters and calculated values • Three communications ports (two RS-232 and one RS-485) • S-3400 IPScom® Communications Software • Includes MODBUS and BECO 2200 proto-cols • Standard 19" rack-mount design (vertical mounting available) • Removable printed circuit board and power supply • 50 and 60 Hz models available • Both 1A and 5 A rated CT inputs available • Additional trip inputs for externally con-nected devices • IRIG-B time synchronization • Operating Temperature: –20° C to +70° C • Sequence of Events Log • Trip Circuit Monitoring • Breaker Monitoring • Four Setpoint GroupsOptional Features • Redundant power supply • M-3925A Target Module • M-3931 Human-Machine Interface (HMI) Module • RJ45 Ethernet port utilizing MODBUS over TCP/IP and BECO2200 over TCP/IP pro-tocols • RJ45 Ethernet port utilizing IEC 61850 Protocol • M-3801D IPSplot® PLUS Oscillograph Analysis Software • Expanded I/O (15 additional outputs and 8 additional inputs) • Standard and Expanded I/O Models avail-able in vertical panel mount–4–M-3425A Generator Protection RelayPROTECTIVE FUNCTIONSDevice Setpoint Number Function Ranges Increment Accuracy†Phase Distance (three-zone mho characteristic) Circle Diameter #1,#2,#3 0.1 to 100.0 ? 0.1 ? ?0.1 ? or 5% (0.5 to 500.0 ?) (?0.5 ? or 5%) Offset #1,#2,#3 –100.0 to 100.0 ? 0.1 ? ?0.1 ? or 5% (–500.0 to 500.0 ?) (?0.5 ? or 5%) Impedance Angle #1,#2,#3 0° to 90° 1° ?1° Load Encroachment Blinder #1,#2,#3 Angle 1° to 90° 1° ?1° R Reach 0.1 to 100 ? Time Delay #1,#2,#3 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Out-of-Step Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Overcurrent Supervision 0.1 to 20 A 0.1 A ?0.1 A or ?2% (0.02 to 4 A) 0.01 A ?0.02 A or ?2%When out-of-step blocking on Zone 1 or Zone 2 is enabled, Zone 3 will not trip and it will be used to detect the out-of-step condition for blocking Function 21 #1 and/or 21 #2.Volts / Hz Definite Time Pickup #1, #2 100 to 200% 1% ?1% Time Delay #1, #2 30 to 8160 Cycles 1 Cycle ?25 Cycles Inverse Time Pickup 100 to 200% 1% ?1% Characteristic Curves Inverse Time #1–#4 — — Time Dial: Curve #1 1 to 100 1 ?1% Time Dial: Curves #2–#4 0.0 to 9.0 0.1 ?1% Reset Rate 1 to 999 Sec. 1 Sec. ?1 Second or ?1% (from threshold of trip)The percent pickup is based on nominal VT secondary voltage and nominal system frequency settings. The pickup accuracy stated is only applicable from 10 to 80 Hz, 0 to 180 V, 100 to 150% V/Hz and a nominal voltage setting of 120 V.Phase Undervoltage Pickup #1, #2, #3 5 to 180 V 1 V ?0.5 V or ?0.5% ?0.8 V or ?0.75%* Time Delay #1, #2, #3 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?0.5%*** When both RMS and Line-Ground to Line-Line VT connection is selected.**When RMS (total waveform) is selected, timing accuracy is O20 cycles or ?1%.†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.212427–5–M-3425A Generator Protection RelayPROTECTIVE FUNCTIONS (cont.)Device Setpoint Number Function Ranges Increment Accuracy†Third-Harmonic Undervoltage, Neutral Pickup #1, #2 0.10 to 14.00 V 0.01 V ?0.1 V or ?1% Positive Sequence Voltage Block 5 to 180 V 1 V ?0.5 V or ?0.5% Forward Under Power Block 0.01 to 1.00 PU 0.01 PU ?0.01 PU or ?2% Reverse Under Power Block –1.00 to –0.01 PU 0.01 PU ?0.01 PU or ?2% Lead Under VAr Block –1.00 to –0.01 PU 0.01 PU ?0.01 PU or ?2% Lag Under VAr Block 0.01 to 1.00 PU 0.01 PU ?0.01 PU or ?2% Lead Power Factor Block 0.01 to 1.00 0.01 ?0.03 PU or ?3% Lag Power Factor Block 0.01 to 1.00 0.01 ?0.03 PU or ?3% High Band Forward Power Block 0.01 to 1.00 PU 0.01 PU ?0.01 PU or ?2% Low Band Forward Power Block 0.01 to 1.00 PU 0.01 PU ?0.01 PU or ?2% Time Delay #1, #2 1 to 8160 Cycles 1 Cycle –1 to +5 Cycles or ?1%Directional Power Pickup #1, #2, #3 –3.000 to +3.000 PU 0.001 PU ?0.002 PU or ?2% Time Delay #1, #2, #3 1 to 8160 Cycles 1 Cycle +16 Cycles or ?1%The minimum Pickup limits are –.002 and +.002 respectively.The per-unit pickup is based on nominal VT secondary voltage and nominal CT secondary current settings. This function can be selected as either overpower or underpower in the forward direction (positive setting) or reverse direction (negative setting). Element #3 can be set as real power or reactive power. This function includes a pro-grammable target LED that may be disabled.Loss of Field (dual-zone offset-mho characteristic) Circle Diameter #1, #2 0.1 to 100.0 ? 0.1 ? ?0.1 ? or ?5% (0.5 to 500.0 ?) (?0.5 ? or ?5%) Offset #1, #2 –50.0 to 50.0 ? 0.1 ? ?0.1 ? or ?5% (–250.0 to 250.0 ?) (?0.5 ? or ?5%) Time Delay #1, #2 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Time Delay with Voltage Control #1, #2 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Voltage Control 5 to 180 V 1 V ?0.5 V or ?0.5% (positive sequence) Directional Element 0° to 20° 1° —Time delay with voltage control for each zone can be individually enabled.†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.403227TN–6–M-3425A Generator Protection RelayPROTECTIVE FUNCTIONS (cont.)Device Setpoint Number Function Ranges Increment Accuracy†Negative Sequence Overcurrent Definite Time Pickup 3 to 100% 1% ?0.5% of 5 A (?0.5% of 1 A) Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Inverse Time Pickup 3 to 100% 1% ?0.5 % of 5 A (?0.5% of 1 A) Time Dial Setting 1 to 95 1 ?3 Cycles or ?3% (K= I22t) Definite Maximum Time to Trip 600 to 65,500 Cycles 1 Cycle ?1 Cycle or ?1% Definite Minimum Time 12 Cycles — fixed Reset Time (Linear) 1 to 600 Seconds 1 Second ?1 Second or ?1% (from threshold of trip) Pickup is based on the generator nominal current setting.Stator Overload Protection Time Constant #1, #2 1.0 to 999.9 minutes 0.1 minutes Maximum Overload Current 1.00 to 10.00 A 0.01 A ?0.1 A or ?2% (0.20 to 2.00 A)Instantaneous Phase Overcurrent Pickup #1, #2 0.1 to 240.0 A 0.1 A ?0.1 A or ?3% (0.1 to 48.0 A) (?0.02 A or ?3%) Time Delay #1, #2 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%When frequency f is < (fnom –5 ) Hz add an additional time of (1.5/f + 0.033) sec to the time delay accuracy.Breaker Failure Pickup Phase Current 0.10 to 10.00 A 0.01 A ?0.1 A or ?2% (0.02 to 2.00 A) (?0.02 A or ?2%) Neutral Current 0.10 to 10.00 A 0.01 A ?0.1 A or ?2% (0.02 to 2.00 A) (?0.02 A or ?2%) Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%50BF can be initiated from designated M-3425A output contacts or programmable control/status inputs.Definite Time Overcurrent Pickup Phase A #1, #2 0.20 A to 240.00 A 0.01 A ?0.1 A or ?3% (0.04 A to 48.00 A) (?0.02 A or ?3%) Pickup Phase B #1, #2 (same as above) Pickup Phase C #1, #2 (same as above) Time Delay #1, #2 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%This function uses generator line-side currents.When 50DT function is used for split-phase differential protection, 50BF, 87, and 87GD functions should not be used, and the IA, IB and IC inputs must be connected to the split phase differential currents.†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.50DT5050BF50BF-Ph50BF-N4649–7–M-3425A Generator Protection RelayPROTECTIVE FUNCTIONS (cont.)Device Setpoint Number Function Ranges Increment Accuracy†Instantaneous Neutral Overcurrent Pickup 0.1 to 240.0 A 0.1 A ?0.1 A or ?3% (0.1 to 48.0 A) (?0.02 A or ?3%) Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%When the frequency f is < (fnom –5) Hz add an additional time of (1.5/f + 0.033) sec to the time delay accuracy.Inadvertent Energizing Overcurrent Pickup 0.5 to 15.00 A 0.01 A ?0.1 A or ?2% (0.1 to 3.00 A) (?0.02 A or ?2%) Undervoltage Pickup 5 to 130 V 1 V ?0.5 V Pick-up Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Drop-out Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%When RMS (total Waveform) is selected, timing accuracy is O20 cycles or ?1%.Inverse Time Neutral Overcurrent Pickup 0.25 to 12.00 A 0.01 A ?0.1 A or ?1% (0.05 to 2.40 A) (?0.02 A or ?1%) Characteristic Curve Definite Time/Inverse/Very Inverse/Extremely Inverse/IEC Curves Moderately Inverse/Very Inverse/Extremely Inverse/IEEE Curves Time Dial 0.5 to 11.0 0.1 ?3 Cycles or ?3%* 0.05 to 1.10 (IEC curves) 0.01 0.5 to 15.0 (IEEE curves) 0.01* For IEC Curves the timing accuracy is ?5%.When the frequency f is < (fnom –5 )Hz add an additional time of (1.5/f + 0.033) sec to the time delay accuracy.Inverse Time Phase Overcurrent, with Voltage Control or Voltage Restraint Pickup 0.50 to 12.00 A 0.01 A ?0.1 A or ?1% (0.10 to 2.40 A) (?0.02 A or ?1%) Characteristic Curve Definite Time/Inverse/Very Inverse/Extremely Inverse/IEC Curves Moderately Inverse/Very Inverse/Extremely Inverse/IEEE Curves Time Dial 0.5 to 11.0 0.1 ?3 Cycles or ?3%* 0.05 to 1.10 (IEC curves) 0.01 0.5 to 15.0 (IEEE curves) 0.01 Voltage Control (VC) 5 to 180 V 1 V ?0.5 V or ?0.5% or Voltage Restraint (VR) Linear Restraint — —* For IEC Curves the timing accuracy is ?5%.51V51N50N50/275027†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.–8–M-3425A Generator Protection RelayPROTECTIVE FUNCTIONS (cont.)Device Setpoint Number Function Ranges Increment Accuracy†Phase Overvoltage Pickup #1, #2, #3 5 to 180 V 1 V ?0.5 V or ?0.5% ?0.8 V or ?0.75%* Time Delay #1, #2, #3 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%** Input Voltage Select Phase, Positive or Negative Sequence**** When both RMS and Line-Ground to Line-Line is selected.** When RMS (total waveform) is selected, timing accuracy is O20 cycles or ?1%.*** When positive or negative sequence voltage is selected, the 59 Function uses the discrete Fourier transform (DFT) for magnitude calculation, irrespective of the RMS/DFT selection, and timing accuracy is ?1 Cycle or ?1%. Positive and negative sequence voltages are calculated in terms of line-to-line voltage when Line to Line is selected for V.T. Configuration.Third-Harmonic Voltage Differential Ratio Ratio (Vx/VN) 0.1 to 5.0 0.1 Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Positive Seq Voltage Block 5 to 180 V 1 V ?0.5 V or ?0.5% Line Side Voltage VX or 3V0 (calculated)The 59D function has a cutoff voltage of 0.5 V for 3rd harmonic VX voltage. If the 180 Hz component of VN is expected to be less than 0.5 V the 59D function can not be used.The 59D function with VX cannot be enabled if the 25 function is enabled. The line side voltage can be selected as the third harmonic of 3V0 (equivalent to VA + VB + VC) or VX.3V0 selection for line side voltage can only be used with line-ground VT configuration.Neutral Overvoltage Pickup #1, #2, #3 5.0 to 180.0 V 0.1 V ?0.5 V or ?0.5% Time Delay #1, #2, #3 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%When 64S is purchased, the 59N Time Delay Accuracy is –1 to +5 cycles.Multi-purpose Overvoltage Pickup #1, #2 5.0 to 180.0 V 0.1 V ?0.5 V or ?0.5% Time Delay #1, #2 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%Multi-purpose input that may be used for turn-to-turn stator ground protection, bus ground protection, or as an extra Phase-Phase, or Phase-Ground voltage input.When 64S is purchased, the 59N Time Delay accuracy is –1 to +5 cycles.VT Fuse-Loss Detection A VT fuse-loss condition is detected by using the positive and negative sequence components of the voltages and currents. VT fuse-loss output can be initiated from internally generated logic, and/or from input contacts. Alarm Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Three Phase VT Fuse Loss Detection Enable/Disable5959N60FL59X59D†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.–9–M-3425A Generator Protection RelayPROTECTIVE FUNCTIONS (cont.)Device Setpoint Number Function Ranges Increment Accuracy†Residual Directional Overcurrent Definite Time* Pickup 0.5 to 240.0 A 0.1 A ?0.1 A or ?3% (0.1 to 48.0 A) (?0.02 A or ?3%) Time Delay 1 to 8160 Cycles 1 Cycle –1 to +3 Cycles or ?1% Inverse Time* Pickup 0.25 to 12.00 A 0.01 A ?0.1 A or ?3% (0.05 to 2.40 A) (?0.02 A or ?3%) Characteristic Curve Definite Time/Inverse/Very Inverse/Extremely Inverse/IEC Curves Moderately Inverse/Very Inverse/Extremely Inverse/IEEE Curves Time Dial 0.5 to 11.0 0.1 ?3 Cycles or ?5% 0.05 to 1.10 (IEC Curves) 0.01 0.5 to 15.0 (IEEE curves) 0.01 Directional Element Max Sensitivity Angle (MSA) 0 to 359° 1° Polarizing Quantity 3Vo (calculated), VN or VX*Directional control for 67NDT or 67NIT may be disabled.VX polarization cannot be used if 25 function is enabled.3Vo polarization can only be used with line-ground VT configuration.Operating current for 67N can be selected as 3Io (calculated) or IN (Residual CT).If 87GD is enabled, 67N with IN (Residual CT) operating current will not be available.Out of Step (mho characteristic) Circle Diameter 0.1 to 100.0 ? 0.1 ? ?0.1 ? or 5% (0.5 to 500.0 ?) (?0.5 ? or 5%) Offset –100.0 to 100.0 ? 0.1 ? ?0.1 ? or 5% (–500.0 to 500.0 ?) (?0.5 ? or 5%) Impedance Angle 0° to 90° 1° ?1° Blinder 0.1 to 50.0 ? 0.1 ? ?0.1 ? or 5% (0.5 to 250.0 ?) (?0.5 ? or 5%) Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% Trip on mho Exit Enable/Disable Pole Slip Counter 1 to 20 1 Pole Slip Reset 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%Frequency Pickup #1,#2,#3,#4 50.00 to 67.00 Hz 0.01 Hz ?0.02 Hz 40.00 to 57.00 Hz* Time Delay #1–#4 3 to 65,500 Cycles 1 Cycle ?2 Cycles or ?1%The pickup accuracy applies to 60 Hz models at a range of 57 to 63 Hz, and to 50 Hz models at a range of 47 to 53 Hz. Beyond these ranges, the accuracy is ?0.1 Hz. * This range applies to 50 Hz nominal frequency models.†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.817867N–10–M-3425A Generator Protection RelayPROTECTIVE FUNCTIONS (cont.)Device Setpoint Number Function Ranges Increment Accuracy†Frequency Accumulation Bands #1, #2, #3, #4, #5, #6 High Band #1 50.00 to 67.00 Hz 0.01 Hz ?0.02 Hz 40.00 to 57.00 Hz* Low Band #1–#6 50.00 to 67.00 Hz 0.01 Hz ?0.02 Hz 40.00 to 57.00 Hz* Delay #1–#6 3 to 360,000 Cycles 1 Cycle ?2 Cycles or ?1%When using multiple frequency bands, the lower limit of the previous band becomes the upper limit for the next band, i.e., Low Band #2 is the upper limit for Band #3, and so forth. Frequency bands must be used in sequential order, 1 to 6. Band #1 must be enabled to use Bands #2–#6. If any band is disabled, all following bands are disabled.When frequency is within an enabled band limit, accumulation time starts (there is an internal ten cycle delay prior to accumulation) and allows the underfrequency blade resonance to be established to avoid unnecessary accumulation of time. When duration is greater than set delay, the alarm asserts and a target log entry is made.The pickup accuracy applies to 60 Hz models at a range of 57 to 63 Hz, and 50 Hz models at a range of 47 to 53 Hz. Beyond these ranges, the accuracy is ?0.1 Hz.* This range applies to 50 Hz nominal frequency models.Rate of Change of Frequency Pickup #1, #2 0.10 to 20.00 Hz/Sec. 0.01 Hz/Sec. ?0.05 Hz/Sec. or ?5% Time Delay #1, #2 3 to 8160 Cycles 1 Cycle + 20 Cycles Negative Sequence Voltage Inhibit 0 to 99% 1% ?0.5%Phase Differential Current Pickup #1, #2 0.20 A to 3.00 A 0.01 A ?0.1 A or ?5% (0.04 to 0.60 A) (?0.02 A or ?5%) Percent Slope #1, #2 1 to 100% 1% ?2% Time Delay* #1, #2 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1% CT Correction** 0.50 to 2.00 0.01 *When a time delay of 1 cycle is selected, the response time is less than 1–1/2 cycles.**The CT Correction factor is multiplied by IA,IB,IC.Ground (zero sequence) Differential Current Pickup 0.20 to 10.00 A 0.01 A ?0.1 A or ?5% (0.04 to 2.00 A) (?0.02 A or ?5%) Time Delay 1 to 8160 Cycles* 1 Cycle +1 to -2 Cycles or ?1% CT Ratio Correction (RC) 0.10 to 7.99 0.01 *The Time Delay Setting should not be less than 2 Cycles.The 87GD function is provided primarily for low-impedance grounded generator applications. This function oper-ates as a directional differential. If 3I0 or In is extremely small (less than 0.2 secondary Amps), the element be-comes non-directional.If 67N function with IN (Residual) operating current is enabled, 87GD will not be available. Also, if 50DT is used for split-phase differential, 87GD function will not be available.†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.8787GD81R81A–11–M-3425A Generator Protection RelayPROTECTIVE FUNCTIONS (cont.)Device Setpoint Number Function Ranges Increment Accuracy†IPSlogicTM IPSlogic uses element pickups, element trip commands, control/status input state changes, output contact close signals to develop 6 programmable logic schemes. Time Delay #1–#6 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%Breaker Monitoring Pickup 0 to 50,000 kA Cycles 1 kA Cycles ? 1 kACycles or kA2 Cycles or kA2 Cycles or kA2 Cycles Time Delay 0.1 to 4095.9 Cycles 0.1 Cycles ?1 Cycle or ?1% Timing Method IT or I2T Preset Accumulators 0 to 50,000 kA Cycles 1 kA Cycle Phase A, B, CThe Breaker Monitor feature calculates an estimate of the per-phase wear on the breaker contacts by measuring and integrating the current (or current squared) through the breaker contacts as an arc.The per-phase values are added to an accumulated total for each phase, and then compared to a user-pro-grammed threshold value. When the threshold is exceeded in any phase, the relay can set a programmable output contact.The accumulated value for each phase can be displayed. The Breaker Monitoring feature requires an initiating contact to begin accumulation, and the accumulation begins after the set time delay.Trip Circuit Monitoring Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%The AUX input is provided for monitoring the integrity of the trip circuit. This input can be used for nominal trip coil voltages of 24 V dc, 48 V dc, 125 V dc and 250 V dc.Nominal Settings Nominal Voltage 50.0 to 140.0 V 0.1 V — Nominal Current 0.50 to 6.00 A 0.01 A — VT Configuration Line-Line/Line-Ground/ Line-Ground to Line-Line* Delta/Wye Unit Transformer Disable/Delta AB/Delta AC Seal-In Delay 2 to 8160 Cycles 1 Cycle ?1 Cycle or ?1%*When Line-Ground to Line-Line is selected, the relay internally calculates the line-line voltages from the line-ground voltages for all voltage-sensitive functions. This Line-Ground to Line-Line selection should only be used for a VT connected Line-Ground with a secondary voltage of 69 V (not 120 V).†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.IPSBMTC–12–M-3425A Generator Protection Relay64F64B2525S25D64SOPTIONAL PROTECTIVE FUNCTIONSDevice Setpoint Number Function Ranges Increment Accuracy†Sync Check Dead Check Dead Voltage Limit 0 to 60 V 1 V ?0.5 V or ±0.5% Dead Time Delay 1 to 8160 Cycles 1 Cycle –1 to +3 Cycles or 1% Sync Check Phase Angle Limit 0° to 90° 1° ?1° Upper Voltage Limit 60 to 140 V 1 V ?0.5 V or ±0.5% Lower Voltage Limit 40 to 120 V 1 V ?0.5 V or ±0.5% Delta Voltage Limit 1.0 to 50.0 V 0.1 V ?0.5 V or ±0.5% Delta Frequency Limit 0.001 to 0.500 Hz 0.001 Hz ?0.0007 Hz or ±5% Sync Check Time Delay 1 to 8160 Cycles 1 Cycle –1 to +3 Cycles or ±1%Various combinations of input supervised hot/dead closing schemes may be selected. The 25 function cannot be enabled if the 59D function with VX or 67N function with VX is enabled.Field Ground Protection Pickup #1, #2 5 to 100 K? 1 K? ?10% or ±1K? Time Delay #1, #2 1 to 8160 Cycles 1 Cycle ?( 2IF +1) Sec. Injection Frequency (IF) 0.10 to 1.00 Hz 0.01 Hz Brush Lift-Off Detection (measuring control circuit) Pickup 0 to 5000 mV 1 mV Time Delay 1 to 8160 Cycles 1 Cycle ?( 2IF +1) Sec.When 64F is purchased, an external Coupler Module (M-3921) is provided for isolation from dc field voltages.Figure 10, Field Ground Protection Block Diagram, illustrates a typical connection utilizing the M-3921 Field Ground Coupler. Hardware dimensional and mounting information is shown in Figure 11, M-3921 Field Ground Coupler Mounting Dimensions.100% Stator Ground Protection by low frequency injection Total Current Pickup 2 to 75 mA 0.1 mA ?2 mA or ?10% Real Component of Total Current Pickup** 2 to 75 mA 0.1 mA ?2 mA or ?10% Time Delay 1 to 8160 Cycles 1 Cycle ?1 Cycle* or ?1%An external Low Frequency Generator, Band Pass Filter and Current Transformer are required for this function. Figure 13, 64S Function Component Connection Diagram, illustrates a typical 100% Stator Ground Protection by Low Frequency Injection application. Hardware dimensional and mounting information is illustrated in Figures 14 and 15.59D is automatically disabled when the 64S function is purchased. 59N may be applied when this function is enabled.* Time Delay accuracy in cycles is based on 20 Hz frequency.** Operation of the real component requires voltage applied to VN input to be > 0.5 Volts at 20 Hz.†Select the greater of these accuracy values. Values in parentheses apply to 1 A CT secondary rating.–13–M-3425A Generator Protection RelayDescriptionThe M-3425A Generator Protection Relay is suitable for all generator ratings and prime movers. Typical con-nection diagrams are illustrated in Figure 4, M-3425A One-Line Functional Diagram (configured for phase differential), and Figure 5, One-Line Functional Diagram (configured for split-phase differential). Configuration OptionsThe M-3425A Generator Protection Relay is available in either a Base or Comprehensive package of protec-tive functions. This provides the user with flexibility in selecting a protective system to best suit the application. Additional Optional Protective Functions may be added at the time of purchase at per-function pricing.The Human-Machine Interface (HMI) Module, Target Module, or redundant power supply can be selected at time of purchase. When the Field Ground (64F) Premium Protective Function is purchased, an external coupler module (M-3921) is provided for isolation from the dc field voltages. When 100% Stator Ground (64S) protection using low-frequency injection is purchased, an external band pass filter and frequency generator is provided. Multiple Setpoint Profiles (Groups)The relay supports four setpoint profiles. This feature allows multiple setpoint profiles to be defined for different power system configurations or generator operating modes. Profiles can be switched either manually using the Human-Machine Interface (HMI), by communications, programmable logic or by control/status inputs.? NOTE: During profile switching, relay operation is disabled for approximately 1 second.MeteringThe relay provides metering of voltages (phase, neutral and sequence quantities), currents (phase, neutral and sequence quantities), real power, reactive power, power factor and impedance measurements.Metering accuracies are:Voltage: ?0.5 V or ?0.5%, whichever is greater ?0.8 V or ?0.75%, whichever is greater (when both RMS and Line-Ground to Line-Line are selected)Current: 5 A rating, ?0.1 A or ?3%, whichever is greater 1 A rating, ?0.02 A or ?3%, whichever is greaterPower: ?0.01 PU or ?2% of VA applied, whichever is greaterFrequency: ?0.02 Hz (from 57 to 63 Hz for 60 Hz models; from 47 to 53 Hz for 50 Hz models) ?0.1 Hz beyond 63 Hz for 60 Hz models, and beyond 53 Hz for 50 Hz modelsVolts/Hz: ?1%Oscillographic RecorderThe oscillographic recorder provides comprehensive data recording of all monitored waveforms, storing up to 416 cycles of data. The total record length is user-configurable from 1 to 16 partitions. The sampling rate is 16 times the power system nominal frequency (50 or 60 Hz). The recorder may be triggered using either the designated control/status inputs, trip outputs, or using serial communications. When untriggered, the recorder continuously stores waveform data, thereby keeping the most recent data in memory. When triggered, the recorder stores pre-trigger data, then continues to store data in memory for a user-defined, post-trigger delay period. The data records can be stored in either Beckwith Electric format or COMTRADE format. Oscillograph records are not retained if power to the relay is interrupted.Target StorageInformation associated with the last 32 trips is stored. The information includes the function(s) operated, the functions picked up, input/output status, time stamp, and phase and neutral currents at the time of trip.–14–M-3425A Generator Protection RelaySequence of Events LogThe Sequence of Events Log records relay element status, I/O status, measured values and calculated values time stamped with 1 ms resolution at user-defined events. The Sequence of Events Log includes 512 of the most recently recorded relay events. The events and the associated data is available for viewing utilizing the S -3400 IPScom Communications Software. Sequence of Events records are not retained if power to the relay is interrupted.CalculationsCurrent and Voltage RMS Values: Uses Discrete Fourier Transform algorithm on sampled voltage and current signals to extract fundamental frequency phasors for relay calculations. RMS calculation for the 50, 51N, 59 and 27 functions, and the 24 function are obtained using the time domain approach to obtain accuracy over a wide frequency band. When the RMS option is selected, the magnitude calculation for 59 and 27 functions is accurate over a wide frequency range (10 to 80 Hz). When the DFT option is selected, the magnitude calcula-tion is accurate near nominal frequency (50 Hz/60 Hz) but will degrade outside the nominal frequency. For 50 and 51N functions the DFT is used when the frequency is 55 Hz to 65 Hz for 60 Hz (nominal) and 45 Hz to 55Hz for 50 Hz (nominal), outside of this range RMS calculation is used.Power Input OptionsNominal 110/120/230/240 V ac, 50/60 Hz, or nominal 110/125/220/250 V dc. Operates properly from 85 V ac to 265 V ac and from 80 V dc to 312.5 V dc. Withstands 300 V ac or 315 V dc for 1 second. Nominal burden 40 VA at 120 V ac/125 V dc.Nominal 24/48 V dc, operates properly from 18 V dc to 56 V dc, withstands 65 V dc for 1 second. Burden 25 VA at 24 V dc and 30 VA at 48 V dc.An optional redundant power supply is available for units that are purchased without the expanded I/O. For those units purchased with the expanded I/O, the unit includes two power supplies which are required to power the relay. Burden (nominal) 46 VA @120 V ac.Sensing InputsFive Voltage Inputs: Rated for a nominal voltage of 50 V ac to 140 V ac at 60 Hz or 50 Hz. Will withstand 240 V continuous voltage and 360 V for 10 seconds. Source voltages may be line-to-ground or line-to-line connected. Phase sequence ABC or ACB is software selectable. Voltage transformer burden less than 0.2 VA at 120 V ac. Seven Current Inputs: Rated nominal current (IR) of 5.0 A or 1.0 A at 60 Hz or 50 Hz. Will withstand 3IR continuous current and 100IR for 1 second. Current transformer burden is less than 0.5 VA at 5 A, or 0.3 VA at 1 A. Control/Status InputsThe control/status inputs, INPUT1 through INPUT6, can be programmed to block any relay protective function, to trigger the oscillograph recorder, to operate one or more outputs or can be an input into IPSlogic. To provide breaker status LED indication on the front panel, the INPUT1 control/status input contact must be connected to the 52b breaker status contact. The minimum current value to initiate/pickup an Input is > 25 mA.The optional expanded I/O includes an additional 8 programmable control/status inputs (INPUT7 through INPUT14).? CAUTION: The control/status inputs should be connected to dry contacts only, and are internally connected (wetted) with a 24 V dc power supply. Output ContactsAny of the functions can be individually programmed to activate any one or more of the eight programmable output contacts OUTPUT1 through OUTPUT8. Any output contact can also be selected as pulsed or latched. IPSlogic can also be used to activate an output contact.The optional expanded I/O includes an additional 15 programmable output contacts (OUTPUT9 through OUT-PUT23). These contacts are configurable only using IPScom software.The eight output contacts (six form ‘a’ and two form ‘c’), the power supply alarm output contact (form ‘b’), the self-test alarm output contact (form ‘c’) and the optional 15 expanded I/O output contacts (form 'a') are all rated per ANSI/IEEE C37.90-1989 for tripping. Make 30 A for 0.2 seconds, carry 8 A, break 6 A at 120 V ac, break 0.5 A at 48 V dc; 0.3 A, 125 V dc; 0.2 A, 250 V dc with L/R=40 mSec.–15–M-3425A Generator Protection RelayIPSlogicThis feature can be programmed utilizing the IPScom® Communications Software. IPSlogic takes the contact input status and function status, and by employing (OR, AND, and NOT) boolean logic and a timer, can activate an output or change setting profiles.Target/Status Indicators and ControlsThe RELAY OK LED reveals proper cycling of the microcomputer. The BRKR CLOSED LED will illuminate when the breaker is closed (when the 52b contact input is open). The OSC TRIG LED indicates that oscillographic data has been recorded in the unit's memory. The TARGET LED will illuminate when any of the relay functions operate. Pressing and releasing the TARGET RESET button resets the target LED if the conditions causing the operation have been removed. Holding the TARGET RESET push button displays the present pickup status of the relay functions. The PS1 and PS2 LEDs will remain illuminated as long as power is applied to the unit and the power supply is operating properly. TIME SYNC LED illuminates when valid IRIG-B signal is applied and time synchronization has been established.CommunicationCommunications ports include rear panel RS-232 and RS-485 ports, a front panel RS-232 port, a rear-panel IRIG-B port and an Ethernet port (optional). The communications protocol implements serial, byte-oriented, asynchronous communication, providing the following functions when used with the Windows™-compatible S-3400 IPScom® Communications Software. MODBUS and BECO 2200 protocols are supported providing: • Interrogation and modification of setpoints • Time-stamped information for the 32 most recent trips • Real-time metering of all quantities measured • Downloading of recorded oscillographic data and Sequence of Events Recorder data.The optional Ethernet port can be purchased with MODBUS over TCP/IP and BECO2200 over TCP/IP protocols or with the IEC 61850 protocol.IRIG-BThe M-3425A Generator Protection Relay can accept either modulated or demodulated IRIG-B time clock syn-chronization signal. The IRIG-B time synchronization information is used to correct the hour, minutes, seconds, and milliseconds information.HMI Module (optional)Local access to the relay is provided through an optional M-3931 HMI (Human-Machine Interface) Mod-ule, allowing for easy-to-use, menu-driven access to all functions utilizing six pushbuttons and a 2-line by 24 character alphanumeric vacuum florescent display. Features of the HMI Module include : • User-definable access codes that allow three levels of security • Interrogation and modification of setpoints • Time-stamped information for the 32 most recent trips • Real-time metering of all quantities measuredTarget Module (optional)An optional M-3925A Target Module provides 24 target and 8 output LEDs. Appropriate target LEDs will illumi-nate when the corresponding function operates. The targets can be reset with the TARGET RESET pushbutton. The OUTPUT LEDs indicate the status of the programmable output relays.–16–M-3425A Generator Protection RelayTemperature Controller MonitoringAny Temperature Controller equipped with a contact output may be connected to the M-3425A and controlled by the relay's programmable IPSlogic function. Figure 1 is an example of a typical Temperature Control-ler Monitoring application. The Omron E5C2 Temperature Controller is a DIN rail mounted RTD interface to the M-3425A Generator Protection relay. The E5C2 accepts type J or K thermocouples, platinum RTDs or thermistors as its input. Supply voltage for the E5C2 accepts 110/120 V ac, 50/60 Hz, or 220/240 V ac 50/60 Hz or 24 V dc.TemperatureControllerOmron E5C2P.D. 750or equivalentIN XIN RTNM-3425AIPSlogicAlarm/TripR1CR2Figure 1 Typical Temperature Controller Monitoring ApplicationI/O Expansion (optional)Optional I/O Expansion provides an additional 15 form 'a' output contacts and an additional 8 control/status inputs. Output LEDs indicate the status of the output relays.Tests and StandardsThe relay complies with the following type tests and standards:Voltage WithstandDielectric WithstandIEC 60255-5 3,500 V dc for 1 minute applied to each independent circuit to earth 3,500 V dc for 1 minute applied between each independent circuit 1,500 V dc for 1 minute applied to IRIG-B circuit to earth 1,500 V dc for 1 minute applied between IRIG-B to each independent circuit 1,500 V dc for 1 minute applied between RS-485 to each independent circuitImpulse VoltageIEC 60255-5 5,000 V pk, +/- polarity applied to each independent circuit to earth 5,000 V pk, +/- polarity applied between each independent circuit 1.2 by 50 µs, 500 ohms impedance, three surges at 1 every 5 secondsInsulation ResistanceIEC 60255-5 > 100 Megaohms–17–M-3425A Generator Protection RelayElectrical EnvironmentElectrostatic Discharge TestEN 60255-22-2 Class 4 (8 kV)—point contact dischargeEN 60255-22-2 Class 4 (15kV)–air dischargeFast Transient Disturbance TestEN 60255-22-4 Class A (4 kV, 2.5 kHz)Surge Withstand CapabilityANSI/IEEE 2,500 V pk-pk oscillatory applied to each independent circuit to earthC37.90.1- 2,500 V pk-pk oscillatory applied between each independent circuit 1989 5,000 V pk Fast Transient applied to each independent circuit to earth 5,000 V pk Fast Transient applied between each independent circuitANSI/IEEE 2,500 V pk-pk oscillatory applied to each independent circuit to earthC37.90.1- 2,500 V pk-pk oscillatory applied between each independent circuit 2002 4,000 V pk Fast Transient burst applied to each independent circuit to earth 4,000 V pk Fast Transient burst applied between each independent circuit ? NOTE: The signal is applied to the digital data circuits (RS-232, RS-485, IRIG-B, Ethernet communication port and field ground coupling port) through capacitive coupling clamp. Radiated SusceptibilityANSI/IEEE 25-1000 Mhz @ 35 V/mC37.90.2Output ContactsANSI/IEEE Make 30 A for 0.2 seconds, off for 15 seconds for 2,000 operations, per Section 6.7.1, TrippingC37.90.0 Output Performance RequirementsAtmospheric EnvironmentTemperatureIEC 60068-2-1 Cold, –20° C IEC 60068-2-2 Dry Heat, +70° CIEC 60068-2-3 Damp Heat, +40° C @ 93% RHMechanical EnvironmentVibrationIEC 60255-21-1 Vibration response Class 1, 0.5 g Vibration endurance Class 1, 1.0 gIEC 60255-21-2 Shock Response Class 1, 5.0 g Shock Withstand Class 1, 15.0 g Bump Endurance Class 1, 10.0 g–18–M-3425A Generator Protection RelayCompliance UL-Listed per 508 – Industrial Control EquipmentUL-Listed Component per 508A Table SA1.1 Industrial Control PanelsCSA-Certified per C22.2 No. 14-95 – Industrial Control EquipmentCE Safety Directive – EN61010-1:2001, CAT II, Pollution Degree 2PhysicalWithout Optional Expanded I/OSize: 19.00" wide x 5.21" high x 10.20" deep (48.3 cm x 13.2 cm x 25.9 cm)Mounting: The unit is a standard 19", semiflush, three-unit high, rack-mount panel design, conforming to ANSI/EIA RS-310C and DIN 41494 Part 5 specifications. Vertical or horizontal panel-mount options are available.Approximate Weight: 17 lbs (7.7 kg) Approximate Shipping Weight: 25 lbs (11.3 kg)With Optional Expanded I/OSize: 19.00" wide x 6.96" high x 10.2" deep (48.3 cm x 17.7 cm x 25.9 cm)Mounting: The unit is a standard 19", semiflush, four-unit high, rack-mount panel design, conforming to ANSI/EIA RS-310C and DIN 41494 Part 5 specifications. Vertical or horizontal panel-mount options are available.Approximate Weight: 19 lbs (8.6 kg) Approximate Shipping Weight: 26 lbs (11.8 kg)Recommended Storage ParametersTemperature: 5° C to 40° CHumidity: Maximum relative humidity 80% for temperatures up to 31° C, decreasing to 31° C lin-early to 50% relative humidity at 40° C.Environment: Storage area to be free of dust, corrosive gases, flammable materials, dew, percolating water, rain and solar radiation.See M-3425A Instruction Book, Appendix E, Layup and Storage for additional information.Patent & WarrantyThe M-3425A Generator Protection Relay is covered by U.S. Patents 5,592,393 and 5,224,011.The M-3425A Generator Protection Relay is covered by a five year warranty from date of shipment.Specification subject to change without notice.External ConnectionsM-3425A external connection points are illustrated in Figures 2 and 3.–19–M-3425A Generator Protection RelayFigure 2 External Connections (Without Optional Expanded I/O)? NOTES: 1. See M-3425A Instruction Book Section 2.3, Setpoints and Time Settings, subsection for 64B/F Field Ground Protection. 2. Before making connections to the Trip Circuit Monitoring input, see M-3425A Instruction Book Section 5.5, Circuit Board Switches and Jumpers, for the information regarding setting Trip Circuit Monitoring input voltage. Connecting a voltage other than the voltage that the unit is configured to may result in mis-operation or permanent damage to the unit. 3. 8 WARNING: ONLY DRY CONTACTS must be connected to inputs (terminals 5 through 10 with 11 common) because these contact inputs are internally wetted. Application of external voltage on these inputs may result in damage to the units. 4. 8 WARNING: The protective grounding terminal must be connected to an earthed ground any time external connections have been made to the unit.?????????????????????????????????????? ???? ????? ?????? ?? ????? ?????????????? ? ???????????? ???????? ?????? ??????????? ??­???­??? ????????? ? ? ??????? ???????????? ???????? ?????? ???????? ?? ???????­?????? ? ???? ?????? ????? ???????????????????? ???????? ?????? ?? ?? ????? ? ?????????????? ?? ?????????????? ???????????????????????­????????????????­???? ?????????? ??????? ?????????????????????? ? ? ? ???????????????????????????????????? ??????????????????????????? ?? ??????? ????? ???? ??????????????????? ?? ? ? ??????????????? ????????????????????? ?? ?? ? ? ?????­?????????????? ??????????? ???????????????­???????????????????????????????????????????????????????????­????­??­??? ? ?­?? ????­??????????????? ?­?????????? ? ???????????? ??? ???????? ? ??????–20–M-3425A Generator Protection Relay?? ??????????????????????????????????????????????? ?? ?? ??????????????? ?????????? ??????????????? ???? ? ????????????????????????????? ????????????? ? ?????????????????????????? ?????????????????? ??????????????????? ???????????????? ????????????  ??????­??­ ???????????????????? ??????????????????????????? ? ? ? ???????????????????????????????????????????????????????????????????? ??? ??? ??????????? ?­ ??????????????­?? ??? ?????????????????? ???????????????????????????????????? ??????? ????????????????????????????????????????????? ? ? ?? ? ????????????? ?? ??? ??????????? ?????????????????? ??????????????? ????????????? ??????????????? ?????????????????????????? ? ? ????????????????????????????????????????????? ????? ??? ??? ? ??????? ­?????? ??????????? ?????­ ????????????????????????????????????? ??­??????? ???? ???????????????? ­???? ??????? ?Figure 3 External Connections (With Optional Expanded I/O)? NOTES: 1. See M-3425A Instruction Book Section 2.3, Setpoints and Time Settings, subsection for 64B/F Field Ground Protection. 2. Before making connections to the Trip Circuit Monitoring input, see M-3425A Instruction Book Section 5.5, Circuit Board Switches and Jumpers, for the information regarding setting Trip Circuit Monitoring input voltage. Connecting a voltage other than the voltage that the unit is configured to may result in mis-operation or permanent damage to the unit. 3. 8 WARNING: ONLY DRY CONTACTS must be connected to inputs (terminals 5 through 10 with 11 common and terminals 68 through 75 with 66 and 67 common) because these contact inputs are internally wetted. Application of external voltage on these inputs may result in damage to the units. 4. 8 WARNING: The protective grounding terminal must be connected to an earthed ground any time external connections have been made to the unit.–21–M-3425A Generator Protection Relay50DTUtility System52Unit52Gen50BFPh87492132 504078 60FL 51V 50/272781R 81 27 59 2464F 64BM-3921+-CTVTM-3425A87GD 50N50BFN 51NR64S27TN2732RHigh-impedance Grounding with ThirdHarmonic 100% Ground Fault ProtectionLow-impedance Grounding with Ground Differentialand Overcurrent Stator Ground Fault ProtectionThese functions are available inthe Comprehensive Package. Asubset of these functions are alsoavailable in a Base Package.This function is available as aoptional protective function.This function provides control forthe function to which it points.M-3425A TypicalConnection Diagram2559DVT (Note 1)Targets(Optional)Integral HMI(Optional)MeteringWaveform CaptureIRIG-BFront RS232CommunicationMultiple SettingGroupsProgrammable I/OSelf DiagnosticsDual Power Supply(Optional)Rear Ethernet Port (Optional)Rear RS-485CommunicationBreakerMonitoringTrip CircuitMonitoring67N67N Polarization(Software Select)81A50N50BFN 51N4659X59N3VO (Calculated)VXVN3IOIN67N Operating Current(Software Select)VT (Note 1)(Note 3)(Note 5)CT (Residual)(Note 4)59D Line SideVoltage(Software Select)VX3VO (Calculated)CT (Neutral)(Notes 2 & 5)CTM(Metering)M(Metering)Rear RS232CommunicationEvent Log? NOTES: 1. When 25 function is enabled, 59X, 59D with VX and 67N with VX are not available, and vice versa. 2. When 67N function with IN (Residual) operating current is enabled, 87GD is not available, and vice versa. 3. When VT source is used as a turn-to-turn fault protection device (See M-3425A Instruction Book, Chapter 2, Application, for additional 59X applications.) 4. The current input IN can be connected either from neutral current or residual current. 5. The 50BFN, 50N, 51N, 59D, 67N (with IN or VN) and 87GD functions are unavailable when the 64S function has been purchased. See the M-3425A Instruction Book for connection details.Figure 4 One-Line Functional Diagram (Configured with Phase Differential)–22–M-3425A Generator Protection RelayUtility System52Unit52Gen81R 81 59 27 24M-3921+-VTCTM-3425A50N 51NRCT2732RHigh-impedance Grounding with ThirdHarmonic 100% Ground Fault ProtectionLow-impedance Grounding withOvercurrent Stator Ground Fault ProtectionThese functions are available inthe Comprehensive Package. Asubset of these functions are alsoavailable in a Base Package.This function is available as aoptional protective function.This function provides control forthe function to which it points.M-3425A TypicalConnection Diagram(Configured for Split-Phase Differential)2559D50DT67NTargets(Optional)Integral HMI(Optional)MeteringWaveform CaptureIRIG-BFront RS232CommunicationMultiple SettingGroupsProgrammable I/OSelf DiagnosticsDual Power Supply(Optional)Rear EthernetPort (Optional)Rear RS-485CommunicationBreakerMonitoringTrip CircuitMonitoring27TN81A46492132 504078 60FL 51V 50/272764F 64B59X64S 59NCT (Residual)(Note 5)VT (Note 1)VT (Note 1)67N Polarization(Software Select)3VO (Calculated)VXVN(Note 2)CT (Note 3)(Note 4)59D Line SideVoltage(Software Select)VX 3VO (Calculated)CT (Neutral)(Note 5)M(Metering)M(Metering)Rear RS232CommunicationEvent Log? NOTES: 1. When 25 function is enabled, 59X, 59D with VX and 67N with VX are not available, and vice versa. 2. When used as a turn-turn fault protection device. 3. CTs are connected for split-phase differential current. 4. 67N operating current can only be selected to IN (Residual) for this configuration. 5. The current input (IN) can be connected either from neutral current or residual current. 6. The 50BFN, 50N, 51N, 59D, 67N (with IN or VN) and 87GD functions are unavailable when the 64S function has been purchased. See the M-3425A Instruction Book for connection details.Figure 5 One-Line Functional Diagram (configured for split-phase differential)–23–M-3425A Generator Protection RelayStandard 19" Horizontal Mount Chassis19.00[48.26]17.50[44.45]17.50[44.45]ACTUAL5.21[13.23]ACTUAL0.40 [1.02] X 0.27[0.68] Slot (4X)10.20[25.91]19.00[48.26]18.31[46.51]0.35[0.89]1.48[3.76]2.25[5.72]NOTE: Dimensions in brackets are in centimeters.? NOTES: 1. Dimensions in brackets are in centimeters. 2. See Instruction Book Chapter 5 for Mounting and Cutout information.Figure 6 Horizontal Unit Dimensions Without Expanded I/O (H1)–24–M-3425A Generator Protection Relay1.67[4.24]19.00[48.26]18.31[46.51]2.25[5.72]0.28 [0.71]Dia. (4X)17.68[44.91]5.59[14.20]Actual1.67[4.24]2.25[5.72]10.20[25.91]COM 1TARGETSOUT 1OUT 2OUT 3OUT 4OUT 5OUT 6OUTPUTSOUT 7OUT 8EXIT ENTERTARGET DIAGTIMEOSC.TRIGSYNCBRKRCLOSEDOKRELAYTARGETRESETPS 2 PS 117.5[44.45]ACTUAL5.65[14.40]Recommended cutout when relay is not used asstandard rack mount and is panel cut out mounted.19.00[48.26]17.50[44.45]0.35[0.89]0.03[0.076]NOTE: Dimensions in brackets are in centimeters.? NOTES: 1. Dimensions in brackets are in centimeters. 2. See Instruction Book Chapter 5 for Mounting and Cutout information.Figure 7 Vertical Unit Dimensions Without Expanded I/O (H2)–25–M-3425A Generator Protection Relay50Hz60HzSERIALNO.MODEL: M-3425A FIRMWARE: D-0150659IRIG- B35366 4 FRATEDVOLTAGE60-140VAC,50/60Hz394037384442434164COUPLERET HERNETC O M 2FIELD GROUNDCO M 3RS 4 8 5B CVV A BVVABVV CVAC4824125A UX250 -++IN6IN5-RATEDCURRENT1A,NOM5A,NOM4546V65X5047494855535451520.01ANOM64S585657ALARMSINPUTSAVNIBIICIN2IN1(52b)IN3IN4RT NINP/ SOUTPUTSINaII bI cSELF-TEST87COM 2BECKWITHELECTRICCO.INC.6190118thAVENO.LARGO,FL33773RS 2 3 2135426727-544-232614WARNINGCONTACTWITHTERMINALSMAYCAUSEELECTRICSHOCKFORCONTACTRATINGSSEEINSTRUCTIONMANUAL10897131211161817152220192123636062615526865-18--658521-856F3F43 A MP,(3A B) 1+--+PS 2PS 1PS2F1F25432PS12524272628312930333234U.S. PATENT 5,592,393, 5,224,011NRTL /CLR 89464RCOM 1TARGETSOUT 1OUT 2OUT 3OUT 4OUT 5OUT 6OUTPUTSOUT 7OUT 8EXIT ENTERTARGETBRKRCLOSEDTARGETRESETPS 2DIAGPS 1OSC.TRIGTIMESYNCOKRELAYRM-3425AGENERATORPROTECTION250V,Figure 8 M-3425A Vertical Unit Layout–26–M-3425A Generator Protection Relay 0.35[0.89] 18.31[46.51]? NOTES: 1. Dimensions in brackets are in centimeters. 2. See Instruction Book Chapter 5 for Mounting and Cutout information.Figure 9 Horizontal and Vertical Unit Dimensions With Expanded I/O (H5 and H6)–27–M-3425A Generator Protection RelayFOR CONTACT RATINGS SEE INSTRUCTIONAL MANUALWARNING CONTACT WITH TERMINALS MAY CAUSE ELECTRIC SHOCK50Hz60HzSERIAL NO.FIRMWARE: D-0150MODEL: M-3425ACOUPLERFIELDGNDIND. CONT. EQ.LISTEDRC US83F4RTNINCOM 2COM 2IRIG-B10510410210110099969795949893929091103898886858483878081797877767473758272716968706766RS232ETHERNET64FIN 10IN 9IN 8IN 7IN 14IN 13IN 12IN 11INPUTSOUTPUTS15161718192021222391011121314F 4 F2F3 F163815-8 66256255 265-66181595860851PS 2 2343332-3303129+PS1 4-PS2 527266I c24222325+ OUTPUTS 28250VPS 1575556546 4 S530.01A NOM515048474952bI 7 2119208171816IP/SALARMSC151413BIA RT N 11IN12SELF466545XV64444341424039I(52b)109NV756IN 68INPUTSVCV ACC-COM 3RS485432++VV B-AUXVBAVA48250125124B37363538--IN 5IN 4IN 3IN 2IN 1TEST3AMP(3AB)VOLTAGERATED60-140VAC50/60Hz5 A, NO M1A ,N O MRATEDCURRENTIIaNLARGO,FL337736190118thAVENO.BECKWITHELECTRICCO.INC.727-544-2326OUT 1OUT 2OUT 3OUT 4OUT 5OUT 6OUTPUTSOUT 7OUT 8TARGETSEXIT ENTERCOM 1910TARGET DIAGTIMEOSC.TRIGSYNCBRKRCLOSEDOKRELAYTARGETRESET1112141516OUTPUTS1718192220212313PS 2 PS 1.RCHIWK TIC RTEEBLEC CNI.COMade in U.S.A.M-3425AGENERATORPROTECTIONNOTES:1. The M-3425A Expanded I/O vertical panel is the same physical size as the M-3425A Expanded I/O horizontal panel. See Figure 7 for dimennsions.2. See Instruction Book Section 5 for Mounting and Cutout information.U.S. PATENT5,592,3935,224,011Figure 10 M-3425A Expanded I/O Vertical Unit Layout–28–M-3425A Generator Protection RelayM-3921 Field Ground Coupler???????????????????????????? ???? ?????????????? ???????? ?? ? ??­????????  ???????????????????????????????????????­ ???????????? ????????? ? ?­??????????? ? Figure 11 Field Ground Protection Block Diagram? NOTES: 1. The above circuit measures insulation resistance (Rf) between rotor field winding and ground (64F). 2. Relay injects ?15 V squarewave (Vout) and measures return signal (Vf) to calculate Rf. 3. The injection frequency can be set (0.1 to 1.0 Hz) based on the rotor capacitance, in order to improve accuracy. 4. The signal rise time is analyzed to determine if shaft brushes are lifting or open (64B). 5. May also be applied on generators with brushless excitation with a grounding brush and pilot ground fault detection brush.Function SpecificationField/Exciter Supply Voltage Rating (Terminal (3) to (2)): • 60 to 1200 V dc, continuous • 1500 V dc, 1 minuteOperating Temperature: –20° to +70°, CentigradePatent & WarrantyThe M-3921 Field Ground Coupler is covered by a five-year warranty from date of shipment.–29–M-3425A Generator Protection RelayTests and StandardsM-3921 Field Ground Coupler complies with the following tests and standards:Voltage WithstandIsolation5 kV ac for 1 minute, all terminals to caseImpulse VoltageIEC 60255–5, 5,000 V pk, 1.2 by 50 µs, 0.5 J, 3 positive and 3 negative impulses at 5 second intervals per minuteElectrical InterferenceElectrostatic Discharge TestEN 60255-22-2 Class 4 (8 kV) — point contact discharge Class 4 (15 kV) — air dischargeFast Transient Disturbance TestsIEC 61000-4-4 Class 4 (4 kV, 2.5 kHz)Surge Withstand CapabilityANSI/IEEE 2,500 V pk-pk oscillatory applied to each independent circuit to earthC37.90.1- 2,500 V pk-pk applied between each independent circuit 1989 5,000 V pk Fast Transient applied to each independent circuit to earth 5,000 V pk Fast Transient applied between each independent circuitANSI/IEEE 2,500 V pk-pk oscillatory applied to each independent circuit to earthC37.90.1- 2,500 V pk-pk applied between each independent circuit 2002 4,000 V pk Fast Transient applied to each independent circuit to earth 4,000 V pk Fast Transient applied between each independent circuit? NOTE: The signal is applied to the digital data circuits (RS-232, RS-485, IRIG-B, Ethernet communication port and field ground coupling port) through capacitive coupling clamp.Radiated SusceptibilityANSI/IEEE 25-1000 Mhz @ 35 V/mC37.90.2Atmospheric EnvironmentIEC 60068–2–1 Cold, –20° C IEC 60068–2–2 Dry Heat, +70° C IEC 60068–2–3 Damp Heat, +40° C @ 93% RHEnclosure ProtectionNEMA I3, IP65C–30–M-3425A Generator Protection Relay.18 DIA [0.46] 4 HOLESMOUNTING PATTERNWITHOUT TABSField GroundCoupler4.72 [11.99]7.87 [19.99]2.96 REF [7.52]3.54 [9.0]?NOTE: Dimensions in brackets are in centimeters.7.40[18.79]9.06 [23.01]3.54 [9.0].18 DIA [0.46] 4 X???????????????????????????? ????? ?M-3921Figure 12 M-3921 Field Ground Coupler Mounting Dimensions–31–M-3425A Generator Protection Relay64S 100% Stator Ground Protection by Low Frequency Signal Injection? NOTE: The Stator Ground Protection function (64S) must be selected when the M-3425A is initially ordered. The 100% stator ground fault protection is provided by injecting an external 20 Hz signal into the neutral of the generator. The protection is provided when the machine is on-line as well as off-line (provided that the 20 Hz generator and relay are powered on.) This scheme requires the following external components in addition to M-3425A protection system: • 20 Hz Signal-generator (BECO Surface Mount/Flush Part No. 430-00426)(Siemens 7XT33) • Band-pass filter (BECO Surface Mount/Flush Part No. 430-00427)(Siemens 7XT34) • 20 Hz Measuring Current Transformer, 400/5 A CT (BECO Par t No. 430-00428) (ITI-CTW3-60-T50-401)The voltage signal generated by the 20 Hz signal-generator is injected into the secondary of the generator neutral grounding transformer through a band-pass filter. The band-pass filter passes the 20 Hz signal and rejects out-of-band signals. The output of the 20 Hz band-pass filter is connected to the VN input of the M-3425A relay through a suitable voltage divider, that limits the M-3425A to O 200 V ac (the voltage generator may be bypassed if the expected 50/60 Hz voltage during a phase-to-ground fault of the generator is O 200 V.) The 20Hz current is also connected to the IN input of the M-3425A, through the 20Hz current transformer.When the generator is operating normally (no ground fault) only a small amount of 20 Hz current will flow as a result of the stator capacitance to ground. When a ground fault occurs anywhere on the generator stator windings the 20 Hz current will increase. The 64S function will issue a trip signal after a set time delay when the measured 20 Hz current exceeds the pickup current.For cases where the Load Resistor (RN) is small, the Undervoltage Inhibit should not be enabled, as the voltage will be small.The 59N function (90 to 95%) should also be used in conjunction with 64S protection to provide backup.–32–M-3425A Generator Protection RelayRN1B11B420 HzBand PassFilter20 HzGenerator11Bl4445M-3425A5253400A 5AL Kl kMax. 200 VV NI NNeutralGroundingTransformerWiringShielded20 Hz CT400/5 A59NHigh*Voltage* For applications with a transformer secondary rating that will result in 50/60 Hz phase ground fault voltages>200 V ac, use the "High Voltage" connection for the 59N Function.** If 20 Hz Signal Generator is prior to Model EE a step down transformer is necessary for voltages >120 VAC.Connection terminals forModel A00/EE shown.121 2 3 6 8 7 9 51A2+ _ Supply VoltageDC 100-230 VAC**UH+ L1UH- L2L3ExternalBlockErrorDeviceOperativeL+41A11A31A4Figure 13 64S Function Component Connection Diagram (Model A00/EE 20 Hz Signal Generator)–33–M-3425A Generator Protection Relay20 Hz Signal Generator Function SpecificationsAuxiliary VoltageRated auxiliary voltage UH ac 3x (100/120 V ac), 50/60 Hz 1x (100 to 120 V ac), 50/60 HzPermissible variations ac 88 to 230 V ac ORRated auxiliary voltage UH dc 110 to 220 V dcPermissible Variations dc 88 to 250 V dcPermissible consumption at 8 Ohm impendance O100 VA? NOTE: 230 VAC is permissible for commissioning only, which is limited in time.20 Hz Output VoltageConnections (11 and 12)Output Voltage approx. 26 V ±10 %, rectangular; 20 Hz ?0.1 HzPower Output, permanently 100 VA over all ranges? NOTE: Output is not resistant to short-circuits.Binary Input for BlockingConnections (6 and 8)Switching Threshold Adjustable voltage range with jumper – For control voltages 24 V 48 V 60 V DC 19 V: Uhigh P DC 19 V, Ulow O DC 10 V – For control voltages 110 V 125 V 220 V 250 V DC 88 V: Uhigh P DC 88 V, Ulow O DC 44 VPermissible voltage, continuous 300 V dcLife ContactConnections (5, 7 and 9)Switching capacity MAKE 30W/VA BREAK 20 VA 30 W resistance load 25 W @ L/R O 50 ms Switching voltage DC 24 V to DC 250 V AC 24 to AC 230 VPermissible current 1 A permanentPermissible Ambient TemperaturesRL describes the load resistance at the Band Pass output.with RL <5 Ohm O550 C or O1310 Fwith RL >5 Ohm O700 C or O1580 F? NOTE: With maximum power output, the device has a power loss of approximately 24 W. To ensure unhin-dered heat dissipation through the vent holes, the distance to other devices located at the top and bottom must be at least 100 mm. This device must therefore always be mounted in the bottom part of the cabinet.–34–M-3425A Generator Protection Relay? NOTE: Detailed Mounting information is contained in the M-3425A Instruction Book Chapter 5, Installation Section 5.6.Figure 14 20Hz Signal Generator DimensionsDimensions in mm–35–M-3425A Generator Protection RelayBand-pass Filter SpecificationsLoad Capacity of the 20 Hz Band-pass FilterConnections (1B1-1B4)Permissible voltage, continuous 55 V acPermissible voltage for O30 s 550 V acFrequency of superimposed ac voltage P 45 HzOverload capability, continuous 3.25 A acTest Voltage 2.8 kV dcLoad Capability of the Voltage Divider CircuitConnections (1A1-1A4):Permissible voltage, continuous 55 V acPermissible voltage for O30 s 50 V acTest Voltage 2.8 kV dcPermissible Ambient Temperatureswith RL <5 ? burden O400 C or O 1040 Fwith RL >5 ? burden O550 C or O 1310 F? NOTE: The device may produce up to 75 W power losses during service. In order to prevent heat pockets, the dissipation of the losses must not be restricted. The minimum clearance above and below the device to other units or walls is 100 mm or 4 inches. In cubicles, the device shall be installed in the bottom area.–36–M-3425A Generator Protection RelayFigure 16 20 Hz Measuring Current Transformer 400-5 A CT? NOTE: Detailed Mounting information is contained in the M-3425A Instruction Book Chapter 5, Installation Section 5.Figure 15 Band-pass Filter DimensionsThis Page Left Intentionally Blank800-3425A-SP-10MC3 01/13© 2001 Beckwith Electric Co. All Rights Reserved.Printed in U.S.A. (#01-67) (04.25.03)