Rishabh 256-PAS Reverse Power Relay
- Brand
- Rishabh
- Model number
- 256-PAS
- Category
- Protection & Monitoring Relays
Reverse power relay for generator sets and feeders: detects loss of the prime mover and prevents motoring; trip adjustable 2 - 20% of rated current, delay 0 - 20 s.
Price and availability on request
Key features
- Adjustable setpoint (reverse power 2 - 20%)
- Adjustable time delay (0 - 20 s)
- Internal differential (factory settable only)
- LED trip indication
- 2 pole relay contacts
- Auto reset
- Applications: generator set protection against motoring; feeder protection against reverse power under fault conditions
Specifications
| Nominal voltage | 100, 110, 120, 220, 230, 240, 380, 400, 415 or 440 V |
|---|---|
| Voltage overload | 1.2 x rating continuously, 1.5 x rating for 10 s (BS 6253) |
| Voltage burden | 3 VA maximum |
| Nominal current | 5 A or 2, 3, 4, 6, 8 & 10 A |
| Current overload | 2 x rated current continuously, 10 x rating for 10 s (BS 6253) |
| Current burden | 2 VA maximum |
| Frequency | 50 / 60 Hz, or 400 Hz on request |
| Adjustments | Reverse power 2 - 20%, time delay 0 - 20 s |
|---|---|
| Repeatability | > 0.5% of full span |
| Hysteresis | Preset at 1% |
| Type | D.P. changeover |
|---|---|
| Rating | A.C. 240 V 5 A non-inductive; D.C. 24 V 5 A resistive |
| Operations | 0.2 million at the above loads |
| Reset | Automatic |
| Operating temperature | 0 °C to +60 °C |
|---|---|
| Storage temperature | -20 °C to +70 °C |
| Temperature co-efficient | 0.05% per °C |
| Interference immunity | Electrical stress surge withstand and non function to ANSI/IEEE C37 90a |
| Enclosure | DIN-rail with wall mounting facility, flame retardant polycarbonate / ABS |
| Enclosure integrity | IP 50 |
| Dimensions | 150 mm wide x 70 mm high x 112 mm deep |
| Weight | Approx. 1.0 kg |
Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.
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