Rishabh 256-PLL Synchro-Check Relay, Live Bus
- Brand
- Rishabh
- Model number
- 256-PLL
- Category
- Protection & Monitoring Relays
Synchro-check relay for paralleling two AC systems: monitors voltage, phase and frequency of both and energises only when they match, so the breaker can close safely.
Price and availability on request
Key features
- Monitors auto-synchronising systems
- Adjustable synchronising setpoints
- LED indicates relay energised (supplies matched)
- Two pole relay contacts
Specifications
| Monitoring | Voltage, phase displacement and frequency of two supplies; single setpoint adjustment for matching |
|---|
| Contacts | One pair normally open and one pair normally closed |
|---|---|
| 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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