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RM-22 Digital Relay Module
Digital relay module for battery supervision with two-stage overvoltage or undervoltage protection.
The RM-22 digital relay module supervises battery banks in uninterruptible supply systems with two-stage overvoltage, undervoltage or combined protection. The first stage signals low battery voltage, while the second stage can trip a contactor and disconnect the battery from the loads.
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Two protection stages
Supports U>, U>>, U< and U<< functions for overvoltage, undervoltage or combined protection.
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Precise parameter setting
Pickup values and time delay are configured through communication with the UST-10Gc terminal.
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Communication to remote station
Signals are transferred to the remote station and onward to the control centre.
- Number of inputs
- 4
- Rated voltage
- 60 V DC
- Measurement range
- 0-100 V DC
- Input resistance
- >220 kΩ per input
- Number of stages
- 2
- Pickup setting range
- 20-160% UN, 0.1 V step
- Time delay setting
- 0-30 s, 0.1 s step
- Pickup setting accuracy
- ±0.1 V
- Number of outputs
- 2, K1 and K2
- Contacts
- 2 CO contacts per output
- Supply
- 18-72 V DC, max. 2 VA
- Temperature range
- -20 to +55 °C
- Dimensions
- 53 x 95 x 58 mm
Measurement inputs
Protection
Relay outputs
General
- RS485 communication with UST-10Gc
- TS 35 rail mounting
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