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

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

The TENSE GKM-02F three-phase monitoring relay is designed to protect three-phase consumers from dangerous disturbances in the electrical network. The device monitors undervoltage, overvoltage, phase loss, incorrect phase sequence and neutral failure.
When a fault is detected, the relay immediately breaks the output contact, thus protecting the connected equipment.

Main features

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

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

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

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

• Phase sequence and phase presence check
  - protection against incorrect phase sequence
  - phase loss detection

• Checking the presence of the neutral conductor (N)
  - protection against the failure of N conductors in the network
  - shutdown if the supply voltage drops below 88 V AC .

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

• Optical signal
  - LED indicators for status and error type

• Compact design, DIN rail mountable

• 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 household consumers

Protects against:

• Overvoltage

• undervoltage

• phase failure

• incorrect phase sequence

• loss of neutral conductor

IMPORTANT WARNING

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