What products does Hirotronix supply?

Hirotronix supplies industrial automation sensors, machine safety systems, operator controls, level measurement systems, and automation components.

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Hirotronix is located in Mississauga, Ontario, Canada.

Does Hirotronix provide worldwide service?

Yes, Hirotronix supplies automation and sensor solutions worldwide.

DOLD SL 9079 – Short-time Voltage Drop Relay

Brand

DOLD

Part number

SL 9079

Order number

0054172

Short-time Voltage Drop Relay

Preventive maintenance
For better productivity

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Brand	DOLD
Housing width	35 mm
Output contacts	2 C/O contacts
Enclosure design	Switch cabinet
Phases	1, 3
Order number	0054172

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.

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 43880SL 9079: Depth 98 mm, with terminals at the top for cabinets for mounting plate and cable duct
Width 35 mm

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
Width	35 mm
Type	SL 9079

Available variants

Contact equipping	2 changeover contacts
Nominal voltage	3AC 230 / 400 V · 3AC 400 V · 3AC 440 V · 3AC 500 V
Response value	0,7 – 1,05 Un · 0,8 – 1,05 Un · 0,8 Un · 0,55 – 1,05 Un
Time delay	0,2 – 2 s
Variant	For 3p3w systems. Adjustable response value · For 3p3w systems. Adjustable response value. With transformator for mains with harmonic content · For 3p3w systems. Fixed response value · For 3p4w systems. Fixed response value · For systems with neutral conductor. Adjustable release value