Description
The Step Voltage Generator is designed to provide step voltage pulsed signal for pinpointing earthed cable faults, sheath faults. Its works as a signal transmitter and can match with Step Voltage Pin-pointer to do earthed cable faults pinpointing.
Step Voltage Pin-pointer is designed an intelligent device integrated with computer technology, digital signal processing technology and with innovative features, high-performance.
It is mainly used for underground power cable (especially the single core high voltage cable) metal sheath grounding fault accurately pinpointing, also can be used in the auxiliary pinpointing of core grounding fault (in the case of sheath have been destroyed).
TECHNICAL SPECIFICATIONS
| Step Voltage Generator | |||
| Open circuit voltage | 0…2800 V effective value of fundamental wave | ||
| Pulsating DC | peak 8 kV, amount to 10 kV phase voltage peak | ||
| Shirt circuit DC | 0…35 mA effective value of fundamental wave | ||
| Pulsating DC peak | 100 mA | ||
| Output frequency | 1 Hz | ||
| Step Voltage Pin-pointer | |||
| Pinpointing mode | Step-voltage | Fault current | HV rod |
| Display | Signal waveform, fault point direction |
Signal waveform, fault point direction |
DC voltage |
| Max. input range | ± 300 V | ± 1 A | ± 10 kV |
| Max. sensitivity | 0.1 mV | 1 mA | 1 V (0.1 – 1 kV) 10 V (1 – 10 kV) |
| Accuracy | 1 % ± 0.1 mV | 1 % ± 1 mA | <1 % (0.1 – 10 kV) |
| Accessory | Step voltage probe | Current sensor | Step voltage rod |
| General | |||
| Power supply | 220 V AC, 50 Hz, 900 W (Step Voltage Generator) Lithium battery, 3.7 V, 6.8 Ah (Step Voltage Pin-pointer) |
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| Dimensions (L×W×H) | 417×234×318 mm (Step Voltage Generator) 220×125×55 mm (Step Voltage Pin-pointer) |
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| Weight | 16.8 kg (Step Voltage Generator) 0.9 kg (Step Voltage Pin-pointer) |
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