Lodestar PT2-PRO
Cable fault indicator Lodestar PT2-PRO Technical characteristics
| PARAMETER | VALUE |
| Events | |
| Types of registered faults | PtG |
| Current response threshold PtGn | 10 A |
| General description of the Device | |
| Operating voltage | 6-35 kV |
| Indication |
- High Intensity LED; - Mechanical Blinker; - External signal LED. |
| Power supply |
- Main power supply of the device – 110/230 VAC, 120-220 VDC; - Backup power supply (lithium battery) for fault indication in case of main power failure (LED blinking time not less than 1200 hours). |
| Reset the fault indication |
- By external command by closing the dry con-tacts; - By timer; - Button on the device. |
| Trigger control |
- Visual; - According to MODBUS protocols (if there is main power supply); - Relay output. |
| Mean time between failures | not less than 110 000 hours |
| Additional features | changing of setpoints by DIP switch |
| Parameters | |
| Zero sequence current threshold range | 10 ÷ 200 A with a step of 10 A, 0 - all settings are configured via MODBUS |
| Indication/fault reset time | 1; 2; 4; 8; 16; 36 hours, 0 - indication reset off |
| Indication/fault reset time after ap-pearance of the power | 10; 30 seconds, 0 - indication reset off |
| Time Analyze PtG | 80; 160 ms, 0 - delay off |
| Design | |
| Installation | On the control panel in the switchgear and control gear cell / Wall-mounted |
| Sensors | own zero sequence current sensor |
| Temperature range | standard from -40° C to +70° C |
| Device protection degrees | IP 65 |
| Sensor protection degrees | IP 67 |
| Impact of external climatic factors | S4 design group according to the requirements and Moderately Cold Climate design of placement category 3.1 according to IEC 721-2-1, but for operation at ambient air temperature from -40 to +70°C |
| Impact of mechanical factors | M7 design according to IEC 721-3-3-87, design group N2 according to the requirements |
Lodestar PT2-PRO is designed to detect a damaged section on overhead lines and cable lines of power distribution networks of 6-35 kV. 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 cur-rent 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.
The device has a digital interface for setting using special software and data transfer to SCADA - RS-485 (not galvanically isolated, MODBUS protocol) when operating from the main power supply.
The device supports self-updating via RS-485 using special soft-ware.
Cable fault locator Lodestar PT2-PRO benefits:
- Phase-to-Ground faults detection;
- Fault indication by switching on ultra-bright LED and mechanical flag;
- Main power supply of the device – 110/230 VAC, 120-220 VDC;
- Standby Lithium battery for backup supply of LEDs emergency indication while loss of main power;
- Digital interface to SCADA - RS-485;
- Low battery level indication.
Current sensor of Lodestar PT2-PRO is installed on the cable's armor of three phases. Indicator is installed on the control panel in the switchgear and control gear cell.
