Impulsų generatorius izoliacijos testui

GBS Elektronik rev3 Isolationstests bis 6nF

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

The Test Pulse setup is designed for long-duration insulation testing of test specimens with up to 6 nF capacitance.

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Converter for High-Voltage Test Transformer

· Internal sine wave generator: 50–200 Hz.
· Pulse width modulation of the sine signal at 16–24 kHz via full-bridge.
· Converter voltage adjustable from 0–600 V, Imax = 2.6 A, max. output power 1.3 kW
· Pulse current limitation at 110 A (cut-off threshold)

Pulse Transformer – Control

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

Pulse Transformer Cascade

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

Short-Circuit Detection, Testing

· If the maximum bridge currents for transformer drive or the maximum currents of the full-bridge power supplies are exceeded, the high voltage is switched off
· The device features a resettable hour meter to track testing duration

Manufacturer price approx. €59,500

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