Availability of individual protective functions depends on input and output circuit configuration. The following hardware versions of the analogue input configurations are available (up to three analogue inputs):
| I1.A1 | - three current inputs In = 1 A |
| I5.A5 | - three current inputs In = 5 A |
| IS | - three current sensor inputs |
| U1 | - three voltage inputs Un = 100 V |
| U2 | - three voltage inputs Un = 230 V |
| Io | - current input 3Io and voltage input 3Uo |
The A1, A5 current variants are equipped with a dedicated flash sensor input for arc protection.
Depending on the chosen version, the device may be equipped with 3 or 4 actuating relays. The details on the availability of functions in certain hardware variants are listed in Table 1 of the Product Data Sheet.
Protective function library
- Overcurrent/undercurrent, four-stage (50/37)
- Arc protection (required for the operation of the fourth stage of the overcurrent protection) (50A)
- Negative sequence overcurrent, two-stage, (46)
- Thermal overcurrent (49M)
- Overvoltage/undervoltage, four-stage (59/27)
- Negative sequence overvoltage, two-stage (47)
- Voltage overfrequency/underfrequency, four-stage (81H/81L)
- Earth-fault four-stage with stage setting as:
- overcurrent zero-current, independent (50N)
- overvoltage zero-voltage (59N)
- overcurrent with voltage interlock (67N)
- earth-fault directional (59N/67N)
- earth-fault admittance, circular (21N)
- earth-fault admittance, directional (0÷90), capacitative (21N)
- External (62)
