The UR-SHA is a component within the GE Multilin UR (Universal Relay) Series of protective relays. It is specifically identified as a Power Supply Module.
Here’s a breakdown of what that means:
- Part of the UR Series: The GE Multilin UR series is a family of modular and versatile protection and control relays used for various applications in power systems, from transmission and distribution to industrial and generation. These relays are known for their flexibility, advanced communication capabilities, and integrated monitoring and metering functions.
- Power Supply Module: The UR-SHA is the module responsible for providing the necessary power to operate the UR relay. It takes an external AC or DC power input and converts it to the internal voltage levels required by the relay’s electronics.
Key features and characteristics of the UR-SHA Power Supply Module typically include:
- Wide Input Voltage Range: It often supports a broad range of AC and DC input voltages to accommodate different power system standards and availability. Common ranges mentioned are 125/250 VAC/DC.
- Reliable Power Conversion: Designed to provide a stable and reliable power source for the sensitive electronics within the protective relay.
- Galvanic Isolation: Typically includes galvanic isolation between the input and output to protect the relay from voltage transients and ground faults in the power supply.
- Status Indication: May have LEDs or other indicators to show the status of the power supply (e.g., power on, fault).
- Modular Design: As part of the UR series, it’s a plug-and-play module that can be easily installed or replaced in the relay chassis.
In summary, the GE Multilin UR-SHA is a crucial component of the UR series protective relay, ensuring a reliable and appropriately conditioned power supply for the relay’s operation. Without a functioning power supply module, the protective relay would not be able to perform its critical protection and control functions.
