GB/T 22717-2008Test specifications of interturn insulation of field pole coil and field winding for electrical machines (English PDF)

1 Scope

This standard specifies the inter-turn coil and a magnetic field motor winding insulation test method and test limits.

This standard applies to DC motor, synchronous motor poles between the coil and the field winding turn insulation withstand voltage test.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 1029-2005 Test method for three-phase synchronous motors

3 test equipment requirements

Inter-turn impulse withstand voltage test equipment should meet the following requirements.

--- Instrument uses a capacitor discharge ringing as inter-turn test voltage. Between manufacturer and user Unless otherwise specified, the capacitance

It is set to 5 times the number of discharges. The first peak voltage apparent front time for 0.2µs (tolerance

+0.3

-0.1µs) Or 1.2µs (Tolerance ± 30%), the former first priority wave time is 0.2µs.

Two --- instrument output voltage shock wave should be symmetrical (with a tolerance of ± 3%). Allows the instrument to a single set of output voltage shock wave or a single group

Converted into two groups impulse voltage impulse voltage wave output.

The maximum impulse voltage peak --- instrument output should be able to satisfy the relevant test requirements for the highest Test Limits, a tolerance of ± 5% or

± 3%, the first priority ± 3%.

Impulse voltage peak --- instrument output should be continuously adjustable, and there are instructions or pre-programmed.

--- Instrument should be able to clearly distinguish the waveform display and waveform scanning frequency adjustable.

--- Instrument shall be capable of continuous reliable operation.

--- Instrument should be equipped with a dedicated test line, a reliable ground terminal and the necessary safety warning facilities, test conversion wiring should be convenient and reliable.

4 Test methods and limits