Three-phase relay for voltage monitoring - GKM-02F (TENSE)

Overvoltage/undervoltage monitoring - Phase sequence - Zero presence check - 5A output - 140-300 VAC

The three-phase monitoring relay GKM-02F from TENSE is designed to protect three-phase loads from dangerous status deviations in the power supply network. The device monitors for undervoltage, overvoltage, phase loss, incorrect phase sequence and neutral conductor failure.
When a fault is detected, the relay immediately disconnects the output contact, protecting the connected equipment.

Key Features

• Overvoltage (HV) monitoring:
  - responds to exceeding the set level in any phase
  - setting range: 230-300 VAC

• Undervoltage monitoring (LV):
  - responds to a voltage drop in any phase
  - setting range: 140-210 V AC

• Adjustable response time (DT):
  - delayed response to fault condition
  - range: 0.1 s - 20 s

• Automatic reset - return time (RT):
  - turn-on delay after voltage normalization
  - range: 0.1 s - 20 s

• Phase sequence and phase presence monitoring
  - protection against incorrect phase sequence
  - phase failure detection

• Monitoring of presence of neutral conductor (N)
  - protection against loss of conductor N in the network
  - disconnection when supply voltage drops below 88 V AC

• Hysteresis 3%
  - limits unwanted rapid switching during voltage fluctuations

• Optical signalling
  - LED indicators for status and fault type

• Compact design, DIN rail mounting

• Output contact:
  - NO + NC, dry contact
  - 5 A load

Application

The relay is designed to protect devices such as:

• three-phase motors

• compressors

• pumps

• air conditioning units

• general industrial and domestic loads

Protects against:

• overvoltage

• undervoltage

• phase failure

• incorrect phase sequence

• loss of neutral conductor

IMPORTANT NOTICE

The relay does NOT regulate voltage!
It is only used to disconnect the load during dangerous conditions in the network, not to stabilize or compensate the voltage.