HVTC & TCU

Modular Concept

Different levels of automation can be provided depending on the testing needs. In full production testing, a high level of automation and a simple go/no go decision is needed. In contrast, manual control offers a higher level of flexibility when testing samples or sample variants during development.
Generally, such test arrangements consist of a test chamber and instruments to control and measure voltage and partial discharge. Different levels of automation are offered to combine the basic HVcompact for voltage measurement with the HVcontrol for regulating the HV transformer and programming voltage steps, ramps, or more complex functions.
Installed on an industrial PC, the HVpilot software then optionally controls these instruments and the ICMcompact for the PD signal and automatically prepares the test report. Power Diagnostix designs special test fixtures, dual test chambers for increased performance, and customer-specific software.

HVTC (High Voltage Test Chamber)

The high voltage test chamber HVTC is designed for PD testing on e. g. transformers, semiconductors, and micro samples. Depending on the built-in HV transformer, testing up to 20 kVrms is possible. The test chamber provides sufficient space to test samples up to a maximum size of 500x500x400 mm³. The main components of this system are a high voltage transformer, a regulating transformer, a coupling capacitor of 1 nF, an automatic grounding system, a security interlock loop, and multiple warning lamps.

Depending on the needs, the instruments and controls can be compiled in different versions:

Level A: PD test bench for sample testing consisting of a test chamber and manual voltage control equipped with an ICMcompact for PD measurement with voltage option or an HVcompact for voltage measurement

Level B: As level A, but instead the HVcompact with the HVcontrol for automated voltage control.

Level C: As level B, but with an industrial PC and the HVpilot software for fully automated control and test report generation.

Level D: Modernization of test rooms using HVcontrol, HVcompact or STEPcompact, and ICMcompact. Software control as with level C.

Typical Set-up

Test set-up for level C:

• 1 x ICMcompact with gating
• 1 x HVcontrol with STEP functionality, 19’’ rack
• 1 x Test chamber HVTC, incl. 10 kV voltage transformer, regulator, manual control buttons, horn, lamps, emergency stop, grounding system, coupling capacitor, ...
• 1 x Industrial PC
• 1 x Software ICMcompact
• 1 x Impulse calibrator CAL1A
• 1 x Preamplifier RPA1
• 1 x Set of cables

TCU (Transformer Control Units)

Power Diagnostix TCU is made for controlling high voltage transformers. Together with the HVcontrol, it combines all standard functions required to manually or automatically operate a high voltage transformer, including safety loops, door locks, and all voltage and current
measurements.