Our team performed measurements with HV products in a 400 KV switchyard in Diva?a

Modern technologies bring a lot of new
materials, elements and goods for greater comfort and well-being. Electricity
is one of them. But it is useful and safe only when it is kept within cables,
windings, etc., and when it is under certain degree of control. Otherwise it
can be useless and dangerous.

What should we worry about?

·       
safety
of people and animals

·       
fire
precautions

·       
good
working conditions

The main problems occur during its application
when connections and junctions weaken or get damaged, whereas dust and humidity
accumulate on insulated surfaces, causing new low ohm paths for leakage
currents.

Conductors and transformers start to overheat, and
hazardous contact voltages occur on conducting parts.

In order to avoid these problems insulation
tests have to be carried out periodically. With periodic testing of insulation
we ensure the protection against electric shock, safety of people and animals,
and fire safety. First test of insulation quality before connecting new or
repaired equipment is important as well.

We provide professional instruments for
insulation resistance measurements. In 400 KV switchyard in Diva?a our team performed
measurements with the instruments TeraOhm 10 kV MI 3200 and TeraOhm 5 kV MI
2077. Measurements were carried out in real-life environment, in extreme
conditions with high level of air humidity.

RTP Diva?a: Firstly, the measurements were performed with shielded
cables and then with standard cables. At the beginning we measured the electromagnetic
field strength. The result on site was 12 kV/m of electric field strength. Tests
were performed with instruments put on the reinforced concrete ground, which
was well earthed, and later also on a trolley, approximately 0.5m above the
ground. Test leads were put in a parallel and perpendicular position with 400kV
conductors. Results of measurements performed with shielded cables were significantly
better than those with standard cables (less deviation).

Final conclusion of the above mentioned
measurements is that the instruments measure more accurately with shielded cables
in a 400kV switchyard in Diva?a, than with standard
cables under the same conditions.

Mr.Anant.K.Waghchoure
Market Development
Executive

Rishabh Instruments Pvt Ltd
F-31,
MIDC-Satpur,
Nasik-422007
Maharashtra
India
Tel:0253-2202197
Mob:9371198805
Website:www.rishabh.co.in
Email:anant@rishabh.co.in 

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