Omicron CPC 100 All-In-One Test System – Part 7 Rotating Machines

Omicron-CPC-100

 The most sensitive part in rotating machines is the insulation. The expected lifetime of a stator winding depends on the ability of the insulation to prevent winding faults.

High temperatures and high rates of temperature changes can generate micro-voids particularly at the interface between mica and resin, and between semi-conductive layers and resin. Partial discharges in these voids will further increase the void size by erosion and complete breakdowns are inevitable.

Therefore, experts strongly recommend the checking of insulation for partial discharges during the whole lifecycle of motors and generators. In order to check the insulation a compensated high-voltage source is needed. The Omicron CPC 100 Multi-functional Primary Test System,and  Omicron CP TD1 test system can be utilized as a high-voltage source.

As maintenance tools for entire windings, the “Δ tan δ” test and the tip-up test are used. Both tests are an indirect way of determining if partial discharges (PD) are occurring in a high-voltage stator winding.

An increase of the power factor / dissipation factor (tip-up) from the normal level indicates that the winding has significant PD activity, as this is indicative of this condition. The CPC 100,and  CP TD1  test system allow “Δ tan δ” and tip-up tests complying with the IEC 60894 and IEEE 286 specifications.

An acceptable power / dissipation factor offers assurance that the coil or the bar were properly fabricated with inherently low-loss materials.

Rotating machines diagnosis

• Power / dissipation factor (tan δ) tip-up test at 50 Hz / 60 Hz up to 12 kV | max. 1 μF / 4 A| with CP TD1 

• Power / dissipation factor test with variable frequency up to 12 kV | frequency from 15 Hz to 400 Hz | with CP TD1

• HV source for testing rotating machines up to 12 kV | max. 2 μF | with CP TD1

 

This is part of the Omicron CPC 100 All-In-One Test System Series. Check out the other posts!

Rent the Multi-Functional Primary Test System – Omicron CPC 100 From Protec

Omicron CPC 100 All-In-One Test System – Part 1 Applications

Omicron CPC 100 All-In-One Test System – Part 2 Current Transformer Testing

Omicron CPC 100 All-In-One Test System – Part 3 Voltage Transformer Testing

Omicron CPC 100 All-In-One Test System – Part 4 Power Transformer Testing

Omicron CPC 100 All-In-One Test System – Part 5 Power Line Testing

Omicron CPC 100 All-In-One Test System – Part 6 Grounding Systems

Omicron CPC 100 All-In-One Test System – Part 7 Rotating Machines

Omicron CPC 100 All-In-One Test System – Part 8 GIS Systems

Omicron CPC 100 All-In-One Test System – Part 9 Switchgear and Circuit Breakers

Omicron CPC 100 All-In-One Test System – Part 10 IEC 61850 installations

Omicron CPC 100 All-In-One Test System – Part 11 Power Systems

Protec offers multiple locations to better serve your needs, and electrical testing equipment rental options that work for you.


Rent Electrical Test & Measurement Equipment Today