AC Hipot Tester

AC High Voltage High Capacity Test Set

Sr. No.

Parameters

Description

1

I/p Voltage

380/400V, 50/60HZ AC supply

2

O/p Voltage

Up to 800KV and 4A

Integration of reactor after 100KVA,
Integration of series and parallel reactor after 1500KVA

3

Capacity

Up to 3000KVA

4

Timer

0-9999 Sec./min. Digital

5

Control

Type 1- The unit can be manual/motorized control for voltage variation and push-button controlled for HT actuation.
Type 2- The unit can be complete with an on board digitized panel with or without computer connectivity.
Type 3- The unit can be PLC based complete with computer, HMI memory, printer etc. for operation.

6

Metering

Voltmeter: One Digital type connected on HT side to indicate the output voltage
Scale:0-800 kV AC.
Ammeter: One Digital type ammeter Connected on earth side to indicate the leakage Current on the sample under test.
Scale:0-40A
Applicable only for type -1
For type -2 and type 3 metering is self-contained

7

Protection

Tripping A fast-acting DC relay will isolate the circuit when the current exceeds pre-set level.
Overload - This is used as a secondary protection in case the input loads exceeds the preset value
Over voltage -This is used as a secondary protection in case the output voltage exceeds the preset value

8

Interlocking

Zero Start Interlock-The unit will have zero start interlocking to avoid the transients on HV transformer and provision for cage door interlocking shall also be provided.
Earth interlock- It ensures that HV will not actuate until good earthing is not provided.

9

Termination

The HT output on suitable HT insulator and another point at earth potential will be brought out on a suitable insulator

10

Control Panel

The control panel is designed for five unique purposes.
1 -Control
2- Measure
3- Protect (Active and Passive)
4- Tripping
5 -Annunciate

11

Reactor

A Parallel/series reactor (LT and HT), when provided in the system, resonates with the capacitive current generated during the dielectric testing of any component/equipment/ system. It generally consists of a motorized moving coil and a fixed reactor. It operates up to a Q-factor of 20.

12

HV Transformer

The transformers are designed and manufactured as per IS /IEC guidelines. Single / Multiple stages step-up transformers are utilized for achieving the desired voltage. The units are designed and manufactured using the preeminent material from India and Abroad. The coils are vacuum impregnated and insulated with High-Quality EHV Grade transformer oil as per relevant IS and IEC Standard.