Product Details & Applications
VMUs measures voltage with optical isolation mainly applicable for High Voltage systems. It’s primary role in High voltage power supply is to monitor voltage fast dynamics during No Load condition. It provides additional digital event for Over voltage detection. It provides slow and accurate measurement for real time control system.
Broad specifications & performance of product
| Parameter | Value |
|---|---|
| Supply | Transmitter: 230V AC Receiver: 5V DC |
| Measurement range | ±120kV , with HV probe VD 150 OR ±12V input to transmitter |
| Measurement Outputs | Measurement: 1 Fast optical High Frequency channel 1 Slow optical Low Frequency channel Events: Dual Optical Digital channel (For Over Voltage event) |
| Measurement Outputs types | - 12V to +12V for High speed channel, 100kHz to 300kHz frequency output for slow channel |
| Bandwidth | 300kHz |
| DC Resolution | +/- 0.5% |
| DC Accuracy | 0.25% |
| Transmission Range | 500m |
Testing status
Tested for ESD IEC-61000-4-2, RFI IEC-61000-4-3, EFT IEC-61000-4-4, Surge IEC-61000-4-5, Immunity IEC-61000-4-6, Power frequency IEC-61000-4-8, Voltage dips IEC-61000-4-11, Dry Heat IEC-60068-2-14, Damp IEC-60068-2-30.
Present status
Commercial Scale model: Currently installed at at NBTF facility of RFX Italy for SPIDER experiment. Operational at ITER-India in various power supplies like Ion Cyclotron HVPS, DNB Acceleration Grid PS, IPR LHCD facility and ITER-India ICRH facility. Technology developed with domestic industry and commercially available.