Description
This system incorporates three measurement modes for standard and two for optional configurations:
Standard configuration with 6 current inputs:
- Sum of three current test
- Adjacent phase reference test
- Phase comparison
Optional configuration with 3 voltage and 3 current inputs:
- Reference test (3 bushings and 3 CCVTs)
Optional configuration with 6 voltage inputs:
- CCVT Reference test (6 CCVTs )
Bushing sensors and adaptors are available for all types of bushings to allow leakage current measurement up to 140 mA AC. The adapters are designed for bushings with grounded and undergrounded capacitor taps. For safety purposes in the eventuality that the sensor becomes disconnected from the bushing monitoring system each adapter is designed to prevent a voltage developing on the equipment.
The ZVCM-1001 Bushing Monitor communicates directly with HYDROCAL 1005, 1008 and 1009 units to offer a complete transformer and bushing monitoring system in one package.
General ZVCM-1001
| Supply voltage | 85 … 264 V AC / 47 … 63 Hz or |
| 120 … 370 V DC | |
| Power consumption | max. 24 VA |
| Cabinet | Stainless steel 304 |
| Dimensions | |
| 3 and 6 channels | W 420 x H 595 x D 153 mm |
| 9 and 12 channels | W 610 x H 686 x D 229 mm |
| Weight | |
| 3 and 6 channels | approx. 15 kg |
| 9 and 12 channels | approx. 23 kg |
| Operation temperature | -40 °C … +65 °C |
| Storage temperature | -40 °C … +85 °C |
| AD converter | 16 Bit |
| Sampling rate | 10 kHz |
Safety
| Electrostatic discharge | IEC 801-2 |
General Bushing sensor VBS / VBC
| Voltage range | 69 … 765 kV AC |
| (Bushing primary) | |
| 60 Hz voltage | max. 2.5 kV AC |
| (on the tap at monitoring) | |
| 60 Hz voltage | max. 120 V AC |
| (on the tap at opened or mistakenly cut coax cable) | |
| Power frequency current | max. 140 mA AC, RMS |
| (through bushing insulation) | |
| Housing | Aluminium |
| Dimensions | Size is different depending on the voltage |
| Weight | approx. no more than 1 kg |
| Operation temperature | -55°C … +90°C, |
| 95 % relative humidity (non condensing) | |
| Storage temperature | -50 °C … +55 °C |
| Installation environment | Outdoor, no corrosive agents in the air |
| Type of capacitor tap | Any manufacturer |
| Connection to test tap | ¾” / 1 ¼” / 2 ¼” |
| others on request | |
For more information please refer to the ZVCM-1001 data sheet. If you have any further questions or would like a quotation please contact our sales team.
