Network Systems Thumper

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Features and Benefits

The High Voltage Inc CDS-36 series of primary cable fault locators are ideal for Network Systems or other situations involving cables rated up to 69kV, oil insulated cables, and/or long cable lengths. Available with either 1600 or 3200 joules, the CDS-36 series offers a powerful impulse ideal for using acoustic and electro-magnetic detection instruments. The CDS-3616U / CDS-3616UF offers 1600 Joules at 9/18/36 kV while the CDS-3632U / CDS-3632UF offers 3200 Joules at 9/18/36kV, true controlled/constant energy thumpers. Equipped with a built in high voltage coupler, the CDS-36 series are TDR/cable radar ready for arc reflection and current impulse methods. With up to 280 mA of burn current, high resistance faults can be rapidly reduced permitting fault location at less damaging voltage levels. Find your fault without causing the next one! There are no better thumpers.

Thumper Specification Review

Don’t handicap your fault finding efforts by buying a thumper with only half the features necessary. For the same money, you can buy a full featured thumper. When specifying,

  • At least two full joule output voltage settings, preferably three, with at least 1000 joules of energy
  • A variable hipot output with high burn current of at least 200mA
  • Variable discharge rate from 6 – 10 seconds
  • A remote TDR/radar, not one built-in, for flexibility, versatility, ease in service, and ease in use


Input: 120Vac, 60Hz, 25A
(CDS-3616U, CDS-3632U)
230Vac, 50/60Hz, 15A
(CDS-3616UF, CDS-3632UF)
Hipot Output: 0 – 9/18/36kVdc
Hipot Burn Current: 280/140/70mA
Discharge Output: 1600 Joules at max voltage in each tap
3200 Joules at max voltage in each tap
Discharge Rate: 6 – 10 seconds
TDR Interface: Arc Reflection
Current Pulse
Size: 25in w x 29in d x 44.5in h
(30″w with attached cable reel)
635mm w x 737mm d x 1130mm h
Weight:  450LBS / 204kG
Output Termination: 100ft HV, Return, and Ground
Optional Cable Reels: 100 to 300ft HV, Return, and Ground on Reels
Other Features: Rugged Transit Protected Meters
External Interlock
Emergency Off Mushroom Switch
Window to view Groundig Solenoid
Internal Heater to limit condensation
Integrated Coupler/Filter/TDR Interface for:
– Arc Reflection Method
– Current Impulse Method
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