Overcurrent protection, motor and generator protection, high level differential protection
Here you will find both individual and combinable digital relays with all protection functions for low and medium voltage applications.
AC and DC power range widths make PROFESSIONAL LINE transmissions as versatile as possible.
Connections to SCADA systems are achieved through standardized interfaces.
Overcurrent protection
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| Device | XI1-I | XI1-E | XI1-S | XI1-E-R | XI1-S-R | XRI1-I-R | XRI1-I-E | XRI1-E-R | |
| Documentation | Manual | Manual | Manual | Manual | Manual | Manual | Manual | Manual | |
| Line | PL | PL | PL | PL | PL | PL | PL | PL | |
| Current Transformer Inputs (MTP) | 3 | 1 | 1 | 1 | 1 | 3 | 4 | 1 | |
| Voltage Transformer Inputs (MTN) | – | – | – | 1 | 1 | 3 | – | 3 | |
| Binary inputs | – | – | – | – | – | 2 | 2 | 2 | |
| Relay Output | 2 | 2 | 2 | 2 | 2 | 4 | 4 | 4 | |
| Watchdog relay | – | – | – | – | – | 1 | 1 | 1 | |
| 50/51 | Overcurrent time protection | Yes | – | – | – | – | Yes | Yes | – |
| 67 | Control overcurrent protection time | – | – | – | – | – | Yes | – | – |
| 50N/51N | Earth protection | – | Yes | – | Yes | – | – | Yes | Yes |
| 50N/51N | Earth resistance / Direct grounding | – | – | Yes | – | Yes | – | – | – |
| 67N | Ground direction protection | – | – | – | Yes | Yes | – | – | Yes |
| 50BF | Electrical safety circuit breaker | – | – | – | – | – | Yes | Yes | – |
| Reset / Block | – | – | – | – | – | Yes | Yes | Yes | |
| Parameters | – | – | – | – | – | 1 | 1 | 1 | |
| Error messages | – | – | – | – | – | Yes | Yes | Yes | |
| RS485 Open Data Protocol | Optional | Optional | Optional | Optional | Optional | Yes | Yes | Yes |
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| Device | XN2-1 | XN2-2 | XRN2-1 | XRN2-2 | XRW1-4 | XUF2 | XUA1 | XU2-AC | XU1-DC | XU1-E | XF2 | XG2 | |
| Documentation | Manual | Manual | Manual | Manual | Manual | Manual | Manual | Manual | Manual | Manual | Manual | Manual | |
| Line | PL | PL | PL | PL | PL | PL | PL | PL | PL | PL | PL | PL | |
| Voltage Transformer Inputs (MTN) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | – | 1 | 3 | 3 | |
| Binary inputs | – | – | 2 | 2 | 2 | – | – | – | – | – | – | – | |
| Relay Output | 2 | 2 | 4 | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| Watchdog relay | – | – | 1 | 1 | 1 | – | – | – | – | – | – | – | |
| 27/59 | Voltage protection | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | – | – | – |
| 59N | Residual stress | – | – | – | – | – | – | – | – | – | Yes | – | – |
| 47 | Phase symmetry | – | – | – | – | – | – | Yes | – | – | – | – | – |
| 81O/U | Frequency protection | Yes | Yes | Yes | Yes | Yes | Yes | – | – | – | – | Yes | – |
| 81 | Frequency protection | – | Yes | – | Yes | Yes | – | – | – | – | – | – | – |
| 78 | Vector shift | Yes | – | Yes | – | – | – | – | – | – | – | – | Yes |
| Reset / Block | – | – | Yes | Yes | Yes | – | – | – | – | – | – | – | |
| Voltage dependent function | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | |
| Time data | – | – | Yes | Yes | Yes | – | – | – | – | – | – | – | |
| Parameters | – | – | 1 | 1 | 1 | – | – | – | – | – | – | – | |
| Error messages | – | – | Yes | Yes | Yes | – | – | – | – | – | – | – | |
| Matrix relay output | – | – | – | – | – | – | – | – | – | – | – | – | |
| RS485 Open Data Protocol | Optional | Optional | Yes | Yes | Yes | Optional | Optional | Optional | Optional | Optional | Optional | Optional |
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| Device | XP2-R | XS2 | XE2 | XR1 | |
| Documentation | Manual | Manual | Manual | Manual | |
| Line | PL | PL | PL | PL | |
| Current Transformer Inputs (MTP) | 1 | 3 | – | – | |
| Voltage Transformer Inputs (MTN) | 1 | – | – | – | |
| Relay Output | 2 | 2 | 2 | 2 | |
| 50/51 | Overcurrent time protection | – | – | Yes | – |
| 32/37 | Directional power | Yes | – | – | – |
| 64N | Rotor earth protection | – | – | – | Yes |
| 40/76 | Excited current protection | – | – | – | Yes |
| Fault diode | – | – | – | Yes | |
| 46 | Negative sequential protection | – | Yes | – | – |
| 40 | Running missing protection | – | – | Yes | – |
| RS485 Open Data Protocol | Optional | Optional | Optional | Optional |
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| Device | XD1-T | XD1-G | XD1-L | |
| Documentation | Manual | Manual | Manual | |
| Line | PL | PL | PL | |
| Current Transformer Inputs (MTP) | 6 | 6 | 2 | |
| Relay Output | 2 | 2 | 3 | |
| 87T | Differential protection: Transformer | Yes | – | – |
| 87G | Differential protection: Generator | – | Yes | – |
| 87L | Differential protection : Leadership | – | – | Yes |
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| Device | XM1 | |
| Documentation | Manual | |
| Line | PL | |
| Current Transformer Inputs (MTP) | 3 | |
| Relay Output | 2 | |
| Watchdog relay | 1 | |
| 50/51 | Overcurrent time protection | Yes |
| 50N/51N | Earth protection | Yes |
| 46 | Negative securing protection | Yes |
| 51 | Motor protection: Blocked rotor | Yes |
| 37 | Motor Protection: Undercurrent | Yes |
| 49 | Motor Protection: Thermal Protection | Yes |
| RS485 Open Data Protocol | Optional |
