Lodestar PT2-PRO
Cable fault indicator Lodestar PT2-PRO Technical characteristics
| PARAMETER | VALUE |
| Mains voltage level, kV | 6-36 |
| Recorded fault types | |
| Identification of two-phase and three-phase faults | - |
| Identification of single-phase PtG | + |
| Determination of singlephase PtG direction | - |
| Fault detection on line switch-on (single-phase PtG, PtP) | PtG |
| Minimum zero-sequence current for single-phase PtG registration, А | up 20 |
| General description of devices | |
| Visual fault indication |
|
| Power supply | |
| AC or DC supply voltage, V | 120/220 or ~220 |
| External backup power supply, V | - |
| Communication interface | RS-485 |
| Communication protocol | Modbus |
| Operation monitoring |
|
| Measurement accuracy | |
| Current, % | 10 |
| Mounting | |
| Mounting | switchboard mounting |
| External transducer | |
| Сurrent sensor | current transformer |
| Operating temperature range, °С | from –40 to +70 |
| IP rating of the indicator | IP 65 |
Device can operate on lines with insulated and resistive neutral points. Device is placed in the substation, wall mounted. The device is triggered and the fault is registered during single-phase earth faults in the monitored line, accompanied by a sudden increase of current in the damaged phases, depending on the settings made by the user. The device can register non-directional PtG faults by measuring only the zero sequence current using its own current sensor.
Benefits:
- Earth fault detection – reliable phase‑to‑ground fault detection.
- Dual fault indication – ultra‑bright LED and mechanical flag for clear local notification.
- Flexible main power supply – 110–230 VAC, 120–220 VDC.
- Backup battery – standby lithium battery ensures LED indication during power loss.
- SCADA integration – RS‑485 digital interface.
- Low battery indication – alerts when battery level is low.
Lodestar PT2
Lodestar PT1
Lodestar PT3
