Short-time Voltage Drop Relay
SL 9079

The voltage relays IL 9079 and SL 9079 of the VARIMETER series detect short undervoltages or short phase failures. Monitoring is simple and does not require a great deal of wiring, as no auxiliary voltage is required. Early detection of impending failtures and preventive maintenance prevent costly damage and as a user you benefit from the operational safety and high availability of your system.

Advantages
. Preventive maintenance
. For better productivity

Features
. According to IEC/EN 60255-1
. Fast detection of undervoltage or phase failure in three-phase voltage systems
. Detects auto reclosing of 20 ms
. Adjustable response value 0.55 ... 1.05 UN
. Operate delay to generate a defined reset signal
. Manual reset possible with external circuit
. Single-phase connection possible
. Optionally fixed response value 0.8 UN
. De-energized on trip
. Green LED indicate for closed contact
. Independant of phase sequence
. 3p4w connection
. Optionally for 3p3w systems
. 2 changeover contacts
. Devices available in 2 enclosure versions:
IL 9079: Depth 59 mm, with terminals at the bottom for installation systems and industrial distribution systems according to DIN 43880
SL 9079: Depth 98 mm, with terminals at the top for cabinets for mounting plate and cable duct
. Width 35 mm

Technical specifications
Width: 35mm
Operate delay: Yes
Enclosure design: Switch cabinet
1- / 3-phase: 3, 1
Output contacts: 2 C/O contacts
Auxiliary voltage: Without
Type: SL 9079
Nominal voltage max.: 3 AC 500V


Manufacturer: E. Dold & Söhne GmbH & Co. KG
Type: SL9079.12/103 3AC400V 0,8-1,05UN
Art. No.: 0054172