Impulsų generatorius izoliacijos testui

GBS Elektronik rev3 Isolationstests bis 6nF

GBS Test Pulse rev3 Pulse Generator for Long-Term Insulation Tests

The Test Pulse setup is designed for long-term insulation testing on test objects with up to 6 nF capacitance.

Converter for High-Voltage Test Transformer

· Internal sine wave generator: 50-200Hz.
· Sinusoidal pulse-width modulation 16-24kHz using a full-bridge.
· Converter voltage adjustable 0-600V, Imax=2.6A, maximum power 1.3kW.
· Pulse current limit 110A (cut-off threshold).

Pulse Transformer – Drive

· Controlled via full-bridge.
· Full-bridge power supply adjustable 0-1000V, 1.3A max.
· Pulse current limit 100A (cut-off threshold).
· Pulse width 20-120μs, nominal 94μs, adjustable.
· 2 selectable series inductances 150μH, 300μH to adapt pulse width and rise time to load capacitance and voltage.
· Pulse repetition frequency 0.1 – 2.5 kHz, adjustable.
· Polarity: Adjustable positive, negative or alternating depending on sine wave polarity.
· Cosine-shaped pulse at the transformer output.

Pulse Transformer Cascade

· Output transformers in 5-stage cascaded configuration.
· Total transformation ratio selectable via taps as 1:7.7, 1:10, or 1:15.
· Maximum output voltage 15kV with possible load capacitance of:
* 6nF at a pulse width of 73μs and a repetition rate of 2.5kHz
* 10nF at a pulse width of 103μs and a repetition rate of 1.25kHz
· Voltage divider 1:1000 parallel.
· Overvoltage protection at approx. 20-23kV via parallel spark gaps.
· Thermistor for over-temperature detection in the first transformer stage.
· Ground-side current measuring socket 100 mV/A.

Breakdown Detection, Testing

· If the maximum bridge currents for transformer control or the maximum currents of the bridge power supplies are exceeded, the high voltage is switched off.
· The device features a resettable hour meter to record test duration.

Manufacturer price approx. €59,500
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