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Qualitrol - Model 141/146/148 Series and AKM 35600/47500 -Pressure Control Switch
Designed to provide operating control, limit or alarm functions for transformers and load tap changers. Contacts can be factory set or adjusted as needed. The snap-action switch automatically resets when pressure returns to pre-set conditions. Pressure and/or vacuum switches can be combined on a common manifold and protected by optional enclosure. Optional pressure indicators (dial gauges) are available on select models.
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Features
- Reliable alarming for rising or falling pressure
- Compact design is easy to install
- Numerous configurations available for many applications
- Available with cut off valve for field testing of switches
- Tested and certified to be reliable
- Reliable snap-action switch resets automatically – no manual reset is required
- The single pole single throw (SPST) and single pole double throw (SPDT) switches are UL and CSA listed
- Switches may be applied on systems using steam, air and other non-combustible gases
- Pressure settings can be factory-set and/or adjustable by equipment manufacturer on select models
- The high electrical rating of the snap-action switch often saves on the need for expensive relays
Options
- Operating pressure or vacuum and operation on rising or falling pressure/vacuum
- Up to 3 switches, switch testing port
- Mounting style
- AKM 35600 is available with 3 way lockable test valve for isolation of pressure switch during operation testing
- Compact 146 series of switches mount in any orientation inside control panel as an integral components
Applications
For pressure and/or vacuum alarming on transformers equipped with nitrogen blanket systems and other related electrical apparatus.