About /

Tried, tested, trusted

One of the
key reasons that you rely on transformers from GBE UK
is the rigorous testing procedure we follow

We have a total of three different test rooms where resin, oil and power transformers can be assessed. We also carry out automatic diagnostic verification of MV coils and devices.

We use certified equipment to carry out the testing in a controlled environment overseen by highly experienced staff.

The reports generated by the testing can then be seen online, or printed out in nine different languages.

Here are the main types of testing we carry out:

Acceptance Tests for Dry Type Transformers +

Measurement of winding resistance
Measurement of the voltage ratio and check of phase displacement
Measurement of the short circuit impedance and load loss
Measurements of no load loss and current
Applied Voltage Test
Induced Voltage Withstand Test
Measurement of partial discharges

Acceptance Tests for Oil Transformers+

Measurement of winding resistance
Measurement of the short circuit impedance and load loss
Measurements of no load loss and current

Type Tests+

Temperature Rise test (Heat Run)
Lightning Impulse Test
Dielectric type tests

Acceptance Tests for Dry Type Transformers +

Dielectric special tests (IEC 60076-3)
Winding hot-spot temperature-rise measurements
Determination of capacitances windings-to-earth, and between windings.
Measurement of dissipation factor (tan δ) of the insulation system capacitances.
Measurement of zero-sequence impedances of the three-phase transformers.
Measurement of d.c. insulation resistance each winding to earth and between windings.
Measurement of the frequency response (FRA)
Monitoring of external coating (ISO 2178 and ISO 2409 or as specified).
Detection of the harmonic content in the load current
Thermographic measurement of the hot spots
Determination of the windings inductance