TOR 110-EFP
Microprocessor device TOR 110-EFP is designed for selective protection of overhead and underground lines under single-phase earth faults (permanent and transient) and double earth faults regardless of the operation mode of the neutral, as well as for indication of the line phase current.
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For substations without voltage transformers, microprocessor devices operate in the centralized protection mode against single-phase earth fault with signals exchange organization.
Device is installed on the door in the place of an ammeter or counting register.
- Device is connected to voltage and to zero sequence current (to a core balance current transformer (CBCT), or to the sum of phase currents).
- Connection to the measuring circuits is monitored by the phasing control function of the device.
- Monitoring of open delta circuits discontinuity is provided.
- TOR 110-EFP can operate to tripping of damaged line and signalling.
- A digital indicator shows the instantaneous values of the voltage and zero sequence current in the emergency mode (capacity current of a section).
- A built-in disturbance recorder of a single phase-to-earth fault, and the event recorder allows to analyze the protection operation
- Device can connect to SCADA via IEC 60870-103 protocol using communication port RS-485.
- For signalling, there are LEDs indicating the tripping, short circuit in the forward and reverse direction, cutoff operation by zero sequence, voltage circuits failures.
Scheme of connection of the device TOR 110-EFP when performing individual protection against earth faults:
| Parameter | Value |
| Rated operating current voltage of power supply circuits (AC/DC), V | 110/220 |
| Operating range of AC/DC voltage of control current of power supply circuits, V | 88 ... 264 |
| Operating range for AC circuits, A | 0,005 ... 10 |
| Operating range for AC voltage circuits, V | 0,05 ... 120 |
| Permissible overload on AC circuits | 100 A for 1s |
| Rated alternating voltage of measurement circuits, V | 100 |
| Rated frequency, Hz | 50 |
| Working temperature range, °С | -40 … +55 |
| Humidity (not condensing), no more | 80% at +25°С |
| Overall dimensions (without fasteners) | 90 x 90 x 175 mm |
| Weight, no more, kg | 1,6 |
| Device power consumption | |
| - AC voltage circuits, VA | 0,07 |
| - AC circuits, VA | 0,03 |
| - control current circuits at rest / tripping, W | 3,6 / 3,9 |
