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Combined High Voltage Test Set

Combined High Voltage Test Set
Combined High Voltage Test Set
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Product Code : ACDCHV
Brand Name : NTPL
Product Description

We are the topnotch manufacturer and supplier of Combined High Voltage Test Set that is extensively used to measure AC and DC voltage of different electrical devices. It is manufactured as per international quality standards under the supervision of our engineers using high quality components. To ensure its flawlessness at clients’ end, it is tested by our quality controllers on various parameters. It is available in several specifications to meet the desired requirements of the clients. Offered Combined High Voltage Test Set can be purchased from us at cost-effective prices.


  • Robustness
  • Durability
  • Precise result
  • Superior performance

Further Details:

The above test set is suitable to perform AC High Voltage Power Frequency test on transformers, motors, cables etc. Leakage current can be measured at desired pressure and this set can be used as a source for cable fault burning.

Input: 230 volts, 50 Hz., single phase, AC. However, sets with other input voltage & frequency are also manufactured if mentioned by the customer.


  • AC Mode
    • Continuously variable from 0 to maximum rated output voltage.
    • Spread over a wide range from several VA to hundreds of KVA.  

Tripping current: 25%, 50% & 100% of the rated current capacity. 

DC Mode: 

  • Continuously variable from 0 to maximum rated output voltage.
  • This DC HV output can be suitably used in two modes.                  
    • Cable fault-burning mode.
    • cable insulation testing mode.           

Only one output mode will be available at a time by brief manual change over.

Duty cycle: Intermittent i.e., 5 minutes ON, 10 minutes OFF. However, test sets of continuous or other duty cycles can also be manufactured at extra cost.

Series :

  • ADHVXXYYU; XX denotes Manual operation of the set (MN) or Motor operation of the set (MT).
  • YY denotes type of transformer i.e. cast resin type (DR) or oil cooled type (OC).
  • U denotes no. of units.
  • This Series will be repeated for both AC & DC mode as Series1 & Series 2


X1X1X1KY1Y1Y1 m; X1X1X1 denotes the maximum rated AC output voltage.

Y1Y1Y1 denotes the current capacity in mA.

X1X1X1KY1Y1Y1 A; Y1Y1Y1 denotes the current capacity in A.


X2X2X2KY2Y2Y2 m; X2X2X2 denotes the maximum rated DC output voltage.

Y2Y2Y2 denotes the current capacity in mA.

Protection: Overload & short circuit provided. Zero start interlocking along with Overvoltage alarm & indication are provided.


  • AC mode : Voltmeter, Rectifier type milliammeter.
  • DC mode : Micro-ammeter scaled and connected to the HV resistor chain for direct DC HV measurement and to measure DC leakage / burning current 

H.V. Transformer: The Transformer will be indoor pattern cast resin trolley mounted type with one end of the HV winding earthen through low impedance circuit element.

Rectifier Unit: This unit consists of diode chain, filter capacitors and resistor chain. The whole DC circuit element will be coupled to the transformer & control by simple & short manual operation.

Discharge Rod: A discharge rod is provided with the set. 



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