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Current Asymmetry Relay
SP 9278CT
- Article number: 0059150
- Type: SP9278.12CT AC220-240V AC4-50A
The current asymmetry relay IP 9278 or SP 9278CT monitors the current symmetry of the 3 phases... more
Product description
The current asymmetry relay IP 9278 or SP 9278CT monitors the current symmetry of the 3 phases in three-phase networks. With the integrated current transformers, currents of up to 100 A can be measured. In the event of asymmetry, the changeover relay is switched after the adjustable delay time tv has elapsed. Optionally, the error can be stored.
Technical specifications
| Width: | 70 mm |
| 1- / 3-phase: | 3 |
| Measuring range: | AC 4 - 100 A |
| Auxiliary voltage: | AC, AC/DC |
| Operate delay: | Yes |
| Output contacts: | 2 C/O contacts |
| Enclosure design: | Switch cabinet |
| Type: | SP 9278CT |
Advantages
- Preventive maintenance
- For better productivity
- Quicker fault locating
- Auxiliary supply and measuring input galvanic separated
- With integrated current transformer
- As option with external remote reset
Features
- According to IEC/EN 60255-1
- IP 9278, SP 9278: 3-phase
- Measuring range
IP 9278, SP 9278: Up to 15 A
SP 9278CT: Up to 100 A - 2 changeover contacts
- Adjustable asymmetry
- Settable time delay
- Open circuit operation
- LED indicators
- With auxiliary voltage
- Width 70 mm