XRI1-I-E Directional Earth Overcurrent Protection Relay (XRI1I1E1.)
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Configuration
The digital relay type XRI1IE has been designed as a time overcurrent protection device
for the use in electrical machines, lines and grids.
The protective functions of the XRI can be summarized as follows:
- Definite-time overcurrent;
- inverse-time overcurrent with selectable characteristics;
- two-element earth fault protection with definite or in-verse time characteristics.
It is possible to select from the following tripping characteristics:
Definite time overcurrent protection (DMT)
Inverse time overcurrent protection (IDMT) with selectable tripping characteristics:
Normal Inverse
Very Inverse
Extremely Inverse
Furthermore, the XRI1IE can be employed as a backup protection for differential and distance protection relays.
Overcurrent Protection
| Parameter | Setting Range |
|---|---|
| I> | 0.2 … 4.0 × I n |
| I>> | 1 … 40 × I n |
| tI> | 0.03 … 260 s (definite time) 0.05 … 10 s (inverse time) |
| tI>> | 0.03 … 2 s |
Earth Fault Protection
| Parameter | Setting Range |
|---|---|
| IE> | 0.01 … 2.0 × I n |
| IE>> | 0.01 … 15 × I n |
| tEI> | 0.03 … 260 s (definite time) 0.05 … 10 s (inverse time) |
| tEI>> | 0.03 … 2 s |
Auxiliary Voltage
Voltage supply via wide-range power supply unit:
Auxiliary voltage range | 16 … 360 V DC or 16 … 270 V AC |
Power consumption | standby: approx. 3 W operating: approx. 5 W (terminals C9, E9) |
- 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«
Interconnection of renewable energies (DER: distributed energy resources) to the public grid.
Protection of High, Medium and Low Voltage feeders against thermal damages by overload or short circuit currents.
Earth fault protection of High, Medium and Low Voltage feeders.