Current Asymmetry Relay
IP 9278

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.

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

Technical specifications
Width: 70mm
Operate delay: Yes
Enclosure design: Distribution board
1- / 3-phase: 3
Output contacts: 2 C/O contacts
Auxiliary voltage: AC, AC/DC
Type: IP 9278
Measuring range: AC 1 - 15A


Manufacturer: E. Dold & Söhne GmbH & Co. KG
Type: IP9278.12 AC/DC24V AC1-15A 0,1-20S
Art. No.: 0057915