Function
The STREAMER Pathfinder MK are portable fault indicators. They are intended to be used by the line's operation or maintenance team when a fault appears on the line. The Pathfinder MK helps to locate the faults phase to phase or phase to ground on the line and therefore sensibly reduces the downtimes.
Operation principle
The STREAMER Pathfinder MK Fault Indicators sense out of balance electromagnetic fields in a single or 3-phases medium voltage network. Sensing is triggered when it detects fault current, above the current/time threshold curve, passing in the line conductors. The STREAMER Pathfinder MK will indicate the fault by showing a bright red mechanical flag and/or by sending the information by SMS.
1. Place the Pathfinder MKs at the beginning of each section
2. Close the main breaker and check the Pathfinder MKs to find the faulty section
3. Move the Pathfinder MKs to the faulty section and repeat step 2 in order to isolate the fault accurately
Technical characteristics
MODEL |
PATHFINDER MK8 |
NEW PATHFINDER MK98 |
PATHFINDER MK10 |
APPLICATION | Temporary | Temporary | Temporary |
INSTALLATION | On pole (wooden, metal, concrete) | On pole (wooden, metal, concrete) | On pole (wooden, metal, concrete) |
OPERATING VOLTAGE | <110 kV | <110 kV | <110 kV |
CURRENT TRIPPING |
High Sensivity 14A Low Sensivity 72A |
Sensetive earth 4А Normal 15А |
High Sensivity 14A Low Sensivity 72A |
RESPONSE TIME | min 20 ms | min 40 ms | min 20 ms |
INDICATION | Flag | Flag | Flag + COM |
FAULT DETECTED | |||
P-P | Yes | Yes | Yes |
P-G | Yes | Yes | Yes |
COMMUNICATION | No | No | GSM/GPRS |
CONFIGURATION | Manual | Manual | Мanual or СОМ |
RESET | Manual | Manual | Мanual or СОМ |
TEST | Manual | Manual | Мanual or СОМ |
LIVE LINE INSTALLATION | Yes | Yes | Yes |
BATTERY LIFE | 6 years | 10 years | 5 years |
TEMPERATURE | -20°C to +70°C | -20°C to +60°C | -20°C to +70°C |
PROTECTION CLASS | IP67 | IP67 | IP67 |
OPTION | 3 pcs carry-on case | 3 pcs carry-on case |
3 pcs carry-on case |
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Accessories
A case for up to 3 MK is available to store and move the sensitive devices securely.