Borna Electronics Co products

This relay is designed for protection against earth connection. Basically, when network current is in balance, resultant of currents passing through load wires is zero. For example, , all the current which reaches to consumer from phase just returns from null in a single-phase two-wire network. It is also the same in three-phase three-wire or four-wire networks. Anyhow, traveling current in wire would be fixed with symmetric or asymmetric loads. But when earth connection happens, some of traveling current is grounded while not returning through the network wires. Considering that all the wires of consumer should pass through the transformator core associated with the device (core balance current transformator), this imbalance would be revealed and relay commands the disconnection.

Borna load control relay is designed to protect three-phase devices against overcurrent. Moreover, it is a good replacement for bimetal.

When supply voltage and input sample current are connected to terminals A1, A2 and terminals K, L respectively and in addition current is in allowed range, device internal relay would be open (internal contact of terminal 15 to 18 is established), PWR and FAULT signals would be on and off correspondingly.

This device is designed for protection against earth connection. When supply voltage is connected to terminals +B, -B and earth or body is connected to terminal P.E, the device internal relay is open(internal contact of terminals 15 to 18 and 25 to 28 are established) and fault signals would be off. If battery +pole is grounded, +B signal gets ON and the internal relay related to battery +pole fault closes right away (internal contact of terminal 15 to 16 is made). If battery -pole is grounded, -B signal gets ON and the internal relay related to battery -pole fault closes right away (internal contact of terminal 25 to 26 is made). After +B and –B signals get ON, if earth connection is rectified, the related signal gets OFF and relay turns back to its primary status.

Timing starts as soon as supply is connected to terminals A1 and A2. At the end of set time, OUT signal gets ON and internal relay status changes (internal contact of terminal 15 to 18 is made). As long as supply voltage is connected and has not dropped more than 40%, output remains unchanged. After de-energization, OUT signal gets OFF and internal relay reverts to its primary status and is ready for retiming (internal contact of terminal 15 to 16 is made). Attention: In the case of de-energization during timing, no change happens at output. After re-energization, timing starts from zero.

ON timer starts timing, relay opens and ON signal gets ON as soon as supply is connected to terminals A1 and A2 (internal contact of terminal 15 to 18 is made). At the end of time adjusted by T.ON potentiometer handle, ON signal gets OFF, OFF signal gets ON and internal relay closes (internal contact of terminal 15 to 16 is made). At the end of time adjusted by T.OFF potentiometer handle, ON signal gets ON, OFF signal gets OFF and internal relay opens (internal contact of terminal 15 to 18 is made). As long as supply is connected and has not dropped more than 40%, energization and de-energization cycle repeats.

Timing starts, relay opens and OUT signal gets ON as soon as supply is connected to terminals A1 and A2 (internal contact of terminal 15 to 18 is made). At the end of time adjusted by DELAY potentiometer handle, OUT signal gets OFF and internal relay closes (internal contact of terminal 15 to 16 is made). Attention: In the case of de-energization during timing, internal relay also closes. After re-energization, the above steps will be repeated.

This device is designed for energy saving and lamps durability. It is not economical to apply simple on/off switches in many apartments and corridors in energy saving point of view because, they should be turned off again several minutes after they get ON. By use of timer type LST, one can turn on the lights by a switch press. Then at the end of adjusted time, the device turns off the lights automatically.

One of the motors used in the industry - especially in manufacturing home appliances – is Brushless DC motor or BLDC motor. BLDC motors in an assortment are classified into sinusoidal flux and Trapezoidal flux.  In trapezoidal flux shape of the teeth and wiring are different from sinusoidal flux motors. BLDC Drives of Borna Electrinic produces in two models:1-sensorless 2-with sensor.

The FC7702 drives offers a broad range of control modes, features, options, and packaging, as well as global voltages and many power ratings. With a consistent programming structure and common operator interface, FC7702 drives ease programming and configuration, and they reduce set-up time, training, and operation. FC7702 Compact-class AC drives deliver a cost-effective, general-purpose solution for standalone machine level control applications and simple system integration.