AC High Voltage Test Cascaded Transformer Type

AC High Voltage Cascaded Test Set

Sr. No.

Parameters

Description

1

I/p Voltage

220/230V, 380/400V, 50/60HZ AC supply

2

O/p Voltage

Up 800KV and 400mA

3

Capacity

Up to 320KVA

4

Timer

0-9999 Sec./min. Digital

5

Control

Mnaual / Motorized

The unit can be manual/motorized control for voltage variation and push button controlled for HT actuation.

Digitized Panel

The unit can be complete with on board digitized panel with or without computer connectivity.

PLC Based

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 sample under test.
Scale : 0-500mA
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 actutae until good earthing is not provided.

9

Termination

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

HV Transformer

The transformers are designed and manufactured as per IS /IEC guidelines. Single / Multiple stage step up transformers are utilized for acheiving 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.