Dold Industries Ltd

11 Hamberts Rd. Blackall Ind. Estate
South Woodham Ferrers
GB-Essex, CM3 5UW
SP 9278CT

Current Asymmetry Relay

SP 9278CT

Contacts

Auxiliary voltage

Measuring range

Time delay

Variant

  • 0059150
  • 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