Dold Industries Ltd

11 Hamberts Rd. Blackall Ind. Estate
South Woodham Ferrers
GB-Essex, CM3 5UW
IL 9837

Frequency Relay

IL 9837

Contacts

Auxiliary voltage

Start up delay

Measuring range

Hysteresis

Approval

Variant

  • 0056555
  • IL9837.11 5-200HZ UH AC230V
Frequency monitoring of A.C. voltages Monitoring of the rotor frequency of slipring motors... more

Product description

  • Frequency monitoring of A.C. voltages
  • Monitoring of the rotor frequency of slipring motors
  • Control / monitoring of drives in crane systems
  • Frequency monitoring in frequency inverters (IL 9837.11/500)

Technical specifications

Width: 35 mm
Operate delay: +
Enclosure design: Distribution board
Output contacts: 1 Wechsler
1- / 3-phase: 1
Auxiliary voltage required: +
Standard measuring range: 5 ... 200 Hz
Measuring range max.: 300 Hz
Type: IL 9837

Features

  • According to IEC/EN 60 255-1
  • Overfrequency or underfrequency monitoring of AC voltages
  • Adjustable response value fmin. or fmax 5 ... 200 Hz or 15 ... 600 Hz
  • Adjustable hysteresis
  • Large voltage range of the measuring input (nominal voltage AC 24 ... 440 V)
  • De-energized on trip
  • LED indication for auxiliary voltage, measuring voltage and contact position
  • 1 changeover contact
  • As option for frequency inverters with a range of 1 … 300 Hz
  • 2 changeover contacts available on request
  • As option adjustable start-up delay available
  • Energized on trip function available on request
  • Devices available in 2 enclosure versions:
    IL 9837: depth 58 mm, with terminals at the bottom for
    installation systems and industrial distribution systems according to DIN 43 880
    SL 9837: depth 98 mm, with terminals at the top for cabinets
    with mounting plate and cable duct
  • 35 mm width