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Power Monitoring Relays
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Supplier
Psk
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- Three phase monitoring relays
- Eight models available with different combinations of detection and protection functions as per the following table of model type versus function.
- Photograph shows a Multi-Voltage unit for detection of Faulty Phase Sequence/ Total Loss of Phase(s)
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FUNCTION
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RSTC |
RSTU |
RST/RST20 |
RSTP |
TRST |
LRST/LRST20 |
| Detection
of wrong phase sequence |
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| Detection
of total absence of one, two or threee phases |
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| Detection
of more than 20% voltage drop of the nominal voltage in one phase. |
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| Detection
of more than 40% voltage drop of the total nominal voltage. |
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| Dection
of loss of neutral or ground |
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| Detection
of loss of asymmetry (rate adj. 5-20%) |
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| Thermistor
Motor Protection |
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| Protection
against high voltage impulses |
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| Multi
Voltage (3 x 200VAC nom. to 3 x 500VAC nom.) |
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