XG2 Generator-Mains Protection (XG2.)

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Product number: XG2.


  • XG2 (vector surge, phase rotation) – ANSI 78V

The relay XG2 of the easy PROFESSIONAL LINE provides reliable protection for generators in parallel operation with the mains, by switching off very quickly in case of mains failure.

Supervision of the phase sequence is also possible.

2 Wire System Connection XG2
Connecting two-wire system (1∿ 35 … 78 Hz), DIP-switch setting Y

3 Wire System Connection XG2
Connecting three-wire system (3∿ 35 … 78 Hz), DIP-switch setting Δ

4 Wire System Connection XG2
Connecting four-wire system (3/N∿ 35 … 78 Hz), DIP-switch setting Y or Δ

Protection Settings

Parameter Setting Range
Vector surge tripping ΔΘ 1 … 31°
Blocking voltage VB< 20% … 70% × V n (cont.)

Auxiliary Voltage

Voltage supply via wide-range power supply unit:

Auxiliary voltage range

50 … 750 V DC or

36 … 520 V AC (f = 35 … 78 Hz)

Power consumption

approx. 4 W (terminals A1 and A3)

  • Fast DIN rail mounting    easy and fast mounting
  • Sealable plastic covers    safe (see if anybody has broken the seal)
  • Super easy settings via front buttons    fast without computer
  • LED and output relays fault indication    easy to find out what has happened
  • Compact form factor    fits in small spaces
  • IT security    no way to attack via Ethernet
  • Robust and reliable    well proven reliable quality
  • Wide Range Power Supply    don’t worry about available supply voltage
  • Integrated Self-Test Procedure (via button)    fast and easy checks: relays, LEDs
  • For all relays except XRI..., XD1-G: optional interface adapter XRS1 (order code XRS1A or XRS1*);

    for all XRI... [except XD1-G]: optional adapter RS485 to USB (order code RSC2485USB1):

      easy doing high precision settings via Windows ® PC software »Smart view«

Protection of electrical (HV, MV) synchronous generators against:

  • Vector surge protection against asynchrounous coming back of grid voltage after power outage (e.g. caused by auto reclosure)

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