XE2 DC Current Relay for Loss of Excitation Protection (XE2.)
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Configuration
- XE2 – ANSI 64REF
The relay XE2 of the easy PROFESSIONAL LINE is used for supervision of the exciter current. By the exciter current element the direct current of the excitation machine in brushless machines is supervised. The protection function includes detection of overcurrent and undercurrent as well as supervision of the ripple component of the exciter current and so faults of the rotating diodes would be revealed.
Protection Settings
| Parameter | Setting Range |
|---|---|
| I> | 0 … 15 A (min. 0.2 A) |
| I< | 0 … 5 A (min. 0.2 A) |
| IR> | 0 … 125% (min. 10%) |
| tI> | 0 … 5 s / 0 … 50 s (⌨) (cont.) |
| tI< | 0 … 5 s / 0 … 50 s (⌨) (cont.) |
(⌨) Different setting ranges via DIP switches. ( Smart view covers the whole range.)
Auxiliary Voltage
Voltage supply via wide-range power supply unit:
Auxiliary voltage range | 19 … 390 V DC or 36 … 275 V AC (f = 40 … 70 Hz) |
Power consumption | approx. 4 W (terminals A1 and A2) |
- 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 XD1-G and except XRI...: 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:
Protection against damages by short-circuit currents.
Underexcitation damages (field failure protection, ANSI / IEEE C37.2: 40)