Short-time Voltage Drop Relay
SL 9079
Article number:
0054172
Type:
SL9079.12/103 3AC400V 0,8-1,05UN
Description
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.
Technical specifications
| 1- / 3-phase: | 1, 3 |
|---|---|
| Auxiliary voltage: | Without |
| Enclosure design: | Switch cabinet |
| Nominal voltage max.: | 3 AC 500 V |
| Operate delay: | Yes |
| Output contacts: | 2 C/O contacts |
| Type: | SL 9079 |
| Width: | 35 mm |
Advantages / Customer benefits
- 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