T-305E High Voltage Surge Generator
The T-305E high voltage surge generator, is used for locating high impedance and flashing faults on distribution cables. It works in conjunction with a cable fault locator for pre-locating the fault position and then with a pinpointer to find the precise fault location. It is applicable for different cable fault location techniques, such as the impulse current method (ICM) and the secondary/multiple impulse method (SIM/MIM).
(Top view of the control panel)
The equipment consists of a capacitor bank, an in-built voltage transformer and a rectifier, switchable to achieve different capacitance and voltage levels. When the unit is switched-off, its automatic and manual discharge facilities removes any residual capacitive charge. Additional Earth/Ground detection circuitry, blocks the operation of the unit if an effective Earth/Ground connection is not in place. These features, together with safety interlocking, ensure safe, reliable and easy-to-use operation.
The T-305E also provides repetitive discharges to facilitate pinpointing through the detection of the magnetic field and audio signals related to the fault discharging.
|Mains Supply||220V ± 10% (110V available through step-up transformer)|
|Mains Frequency||50/60Hz ± 20%|
|Maximum Power Consumption||1500W|
|Operating Modes||Single pulse, Cyclic pulse, DC|
|Surge Steps (1024J)||2µF (0 -32kV), 8µF (0 – 16kV), 16µF (0 -8kV)|
|Surge Steps (2048J)||4µF (0 -32kV), 16µF (0 – 16kV), 32µF (0 -8kV)|
|Surge Voltage||0 – 32kV; 0 – 16kV; 0 – 8 kV|
|DC Test (kV)/mA||0…32kV / 48mA (1024J), 60mA (2048J)
|Pulse Ratio (Seconds)||4 – 30s|
|Mode Of Operation||DC / single impulse / multiple impulse|
|Discharge Period||4 – 15 s. Continuously adjustable|
|Testing Method||ICM, SIM/MIM|
|Dimensions||500 x 400 x 960mm (1024J)
500 x 400 x 1100mm (2048J)
|Operating Temperature||-10 – +50oC|
|Operating Relative Humidity||20% – 90% relative humidity|
|Operating Atmospheric Pressure||86 – 106kPa|
|ingress protection||IP21 (IP54 with optional cover)|