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Archive: Category «Testing and Commissioning»

Cables

Inspection and Test Procedures for LV Cables

Visual and Mechanical Inspection Electrical Tests Test Values TABLE 100.12 – US Standard Fasteners – Bolt-Torque Values for Electrical Connections Compare cable data with drawings and specifications. Inspect exposed sections… Read more

Nov 27, 2012 | By Edvard

Inspection and Test Procedures for LV Cables
Power Substation

Switching Impulse Test of the Transformer

The switching impulse test is applied to confirm the withstand of the transformer’s insulation against excessive voltages occurring during switching. During the switching impulse voltage test, the insulation between windings… Read more

Oct 11, 2012 | By Edvard

Switching Impulse Test of the Transformer
Maintenance

Measurement of insulation resistance (IR) – 2

Continued from first part: Measurement of insulation resistance (IR) – Part 1 1. IR Values For Electrical Apparatus & Systems 2. IR Value for Transformer 3. IR Value for Tap Changer… Read more

Apr 29, 2012 | By jiguparmar

Fluke insulation resistance tester up to 10kV
Cables

Measurement of insulation resistance (IR)

The measurement of insulation resistance is a common routine test performed on all types of electrical wires and cables. As a production test, this test is often used as a… Read more

Apr 28, 2012 | By jiguparmar

Megger MIT1020 10-kV insulation resistance testers are all designed specifically to assist the user with the testing and maintenance of high voltage equipment
Medium Voltage

Erection Procedures For Medium Voltage Switchgear

Before commencing erection of medium voltage (MV) switchgear check that all connections are tight on busbars and on main and auxiliary circuits. Examine the insulation carefully, because there have been… Read more

Apr 03, 2012 | By Edvard

Erection of ABB's Unigear medium voltage switchgear
Energy and Power

Megger Insulation Resistance Test

As you know good insulation has high resistance and poor insulation relatively low resistance. The actual resistance values can be higher or lower, depending upon such factors as the temperature… Read more

Mar 13, 2012 | By Edvard

Megger Insulation Resistance Test


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