HRN-57 - 3Phase - Monitoring Relay
Voltage monitoring relays in 3P with adjustable levels, HRN-57, 3 x 300 - 500 V
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- It serves to monitor voltage in a switchboard, protection of devices in 3-phase main.
- It monitors value of voltage in 3-phase main.
- It is possible to set upper and lower level independently.
- Adjustable time delay eliminated short voltage peaks and failures in the main.
- Relay doesn’t monitor phase sequence.
- HRN-57: supply from all phases, means that relay is functional also in case of failure in one phase.
- Phase failure: Yes
- Phase sequence: x
- Overvoltage: Yes
- Undervoltage: Yes
- Asymmetry: x
- Monitored range: AC 3 x 300-500 V
- Supply voltage: 1x CO, 8 A
- Housing: 1-MODULE
- Power supply: from monitored voltage
- Dimensions: 90 x 17.6 x 64 mm (3.5˝ x 0.7˝ x 2.5˝)