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AS9100D

Health & Safety

ISO 45001

Environmental

ISO 14001

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MTE ZVCM-1001 Hydrocal Extension Package Transformer Bushing Monitoring

Bushing failures are considered as one of the major causes for transformer outages. Historically bushings were tested off-line to measure the capacitance and the dissipation / power factor.

The Bushing Monitor ZVCM-1001, which is an extension package to the MTE HYDROCAL family, is a permanently installed on-line bushing monitoring system. It continuously measures up to six leakage currents, tests the power factor and capacitance values and monitors the condition of bushings, CCVT`s 1) and free-standing CT`s.

Brochure

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.

Additional information

Supply voltage

120 … 370 V DC, 85 … 264 V AC / 47 … 63 Hz or

Power consumption

max. 24 VA

Cabinet

Stainless steel 304

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

Product Enquiry

Please contact our sales for the product information. E-mail : [email protected]