T-305E User Manual Version 3.5 | 3
Foreword
Thank you for purchasing the new product of Kehui - T-305E, the high voltage surge
generator (hereinafter referred to as T-305E)
The T-305E is a high-performance high voltage surge generator with a maximum output
voltage of 32kV and with versions providing a maximum surge energy of 1024J or 2048J. It is
used for pre-location and pinpointing of high impedance and intermittent flashing faults of
underground power cables.
The T-305E provides either DC or single-shot high voltage surge voltage signals to the faulty
cable to break down the fault for pre-location purpose. It works in conjunction
with Kehui’s
T-906, cable fault locator, to pre-locate cable faults. T-305E supports the Secondary/
Multiple Impulse Methods (SIM/MIM) and the Impulse Current Method (
ICM)
for fault pre-
location.
T-305E works in conjunction with the T-506 for cable fault pinpointing. It provides cyclic
impulses to the faulty cable to periodically break down high impedance and flashing faults.
A magnetic field and an acoustic signal are produced during this process. The signals are
used by the T-506 to trace and to pinpoint the fault by the magnetic field and sound
coincidence method. The unit can also be used as a DC power source for the T-H200 sheath
fault locator.
Kehui constantly improves its products, and the individual instruments provided may differ
from the instructions in this manual without prior notice. We are always at your service if
you have any queries or should you require further information.
