IL 9077

The Over- and Undervoltage relays IL / SL / IP / SP 9077 of the VARIMETER PRO series monitor overvoltage, undervoltage and Phase failure in three-phase or single-phase networks. The measurement is simple and without extensive wiring, as no separate auxiliary supply is necessary. The early detection of up-coming break downs and preventive maintenance avoid expensive damages. As user you profit from the reliability and availability of your plant.

• According to IEC/EN 60255-1
• Identification of overvoltage, undervoltage and phase failure
• With asymmetry identification as an option
• Mains fault diagnostics with a number of LEDs
• Setting values for overvoltage and undervoltage can be set separately
• Large Setting Ranges 0.9 ... 1.3 UN and 0.7 ... 1.1 UN • Time delay variable between 0.1 ... 20 s
• Closed circuit operation
• No auxiliary voltage
• Independant of phase sequence
• As option with phase sequence detection
• Single-phase connection possible
• Optionally for 3P3W Systems
• 2 changeover contacts, at IP/SP 9077 2 x 2 changeover contacts
• Devices available in 2 enclosure versions:
  I-model: depth 59 mm, with terminals at the bottom for installation systems and industrial Distribution systems according to DIN 43880
  S-model: depth 98 mm, with terminals at the top for Cabinets with mounting plate and cable duct
• IL 9077, SL 9077: Width 35 mm
  IP 9077, SP 9077: Width 70 mm