Hydrotap

Multi-Gas-in-Oil Analysis System for Monitoring Tap Changer
Monitoring Tap Changer

As Hydrogen (H2) is involved in nearly every fault of the isolation system of power transformers and Carbon Monoxide (CO) / Carbon Dioxide (CO2) is a sign of degradation of the cellulosic / paper isolation the presence and increase of Acetylene (C2H2), Methane (CH4), Ethylene (C2H4) and Ethane (C2H6) further classifies the nature of a fault as overheating, partial discharge or high energy arcing.

The device can serve as a compact transformer monitoring system by the integration / connection of other sensors present on atransformer via its analogue inputs:

  • 4 analogue inputs 0/4-20mADC
  • 6 analog inputs 0/4-20mADC +20% / 0-80 VAC +20%

configurable by jumpers It is further equipped with digital outputs for the transmission of alarms or the execution of control functions (e. g. control of a cooling system of a transformer):

  • 8 digital relay outputs
  • 5 digital optocoupler outputs
Datasheet

HYDROCAL MS-7

On-line Transformer Monitoring Extension Package
HYDROCAL MS-7 a On-line Transformer Monitoring Extension

Thermal condition monitoring is one of the most important ways to detect transformer problems and to avoid transformer outages. That`s why MTE has addressed this issue and presents a selection of the most important indicators which are required for thermal condition monitoring.

The HYDROCAL MS-7, which is an extension package of the MTE HYDROCAL product line is providing all these important information.

This innovative solution, which has been developed in cooperation with MR (Maschinenfabrik Reinhausen), measures 3 oil temperatures (top oil, bottom oil & tap changer oil), ambient temperature, load current, load voltage and the tap changer position. These measurements are centralised and passed over to its analogue outputs:

  • 7 analogue outputs 4 ... 20 mA

  • The analogue outputs of HYDROCAL MS-7 are directly connectable to the analog inputs of HYDROCAL 1003, 1005 1) or 1008 1) units and in conjunction with these units, it offers a complete transformer monitoring system in one package.

    Datasheet

    Hydrocal 1005-3/-2/-1

    Multi-Gas-in-Oil Analysis System with Transformer Monitoring Functions
    The HYDROCAL 1005-3/-2/-1

    The HYDROCAL 1005-3/-2/-1 is designed for multi-gas-in-oil analysis on a bank of three single phase transformers located next to each other. This new wall-mounted system allows for the individual measurement of Moisture (H2O) and the key gases Hydrogen (H2), Carbon Monoxide (CO), Acetylene (C2H2) and Ethylene (C2H4) dissolved in transformer oil utilising a sampling system that samples oil from each tank via three separate oil channels expertly engineered to provide negligible mixing of oil.

    As Hydrogen (H2) is involved in nearly every fault of the isolation system of power transformers and Carbon Monoxide (CO) is a sign of an involvement of the cellulosic / paper isolation the presence and increase of Acetylene (C2H2) and Ethylene C2H4) further classifies the nature of a fault as overheating, partial discharge or high energy arcing.

    The device can serve as a compact transformer monitoring system by the integration / connection of other sensors present on a transformer via its analogue inputs:

    • 4 analogue inputs 0/4-20 mADC
    • 6 analogue inputs 0/4-20 mADC +20% / 0-80 VAC +20%

    configurable by jumpers It is further equipped with digital outputs for the transmission of alerts or the execution of control functions (e. g. control of the cooling system of a transformer):

    • 5 digital relay outputs
    • 5 digital optocoupler outputs
    Datasheet

    HYDROCAL 1008-3/-2/-1

    Multi-Gas-in-Oil Analysis System for Monitoring a bank of up to three single phase Transformers located next to each other
    The HYDROCAL 1008-3/-2/-1

    The HYDROCAL 1008-3/-2/-1 is designed for multi-gas-in-oil analysis on a bank of up to three single phase transformers located next to each other. This wall mounted system allows the individual measurement of Moisture (H2O) and the key gases Hydrogen (H2), Carbon Monoxide (CO), Carbon Dioxide (CO2), Methane (CH4), Acetylene (C2H2), Ethylene (C2H4) and Ethane (C2H6) dissolved in the transformer oil utilising a smart sampling system that samples oil from each tank via three separate oil channels.

    As Hydrogen (H2) is involved in nearly every fault of the isolation system of power transformers and Carbon Monoxide (CO) / Carbon Dioxide (CO2) is a sign of degradation of the cellulosic / paper isolation the presence and increase of Acetylene (C2H2), Methane (CH4), Ethylene (C2H4) and Ethane (C2H6) further classifies the nature of a fault as overheating, partial discharge or high energy arcing.

    The device can serve as a compact transformer monitoring system by the integration / connection of other sensors present on a transformer via its analogue inputs:

    • 4 Analog inputs 0/4-20mADC
    • 6 Analog inputs 0/4-20mADC +20% / 0-80 VAC +20%

    configurable by jumpers It is further equipped with digital outputs for the transmission of alarms or the execution of control functions (e.g. control of a cooling system of a transformer):

    • 8 digital relay outputs
    • 5 digital optocoupler outputs
    Datasheet

    Bushing Monitor ZVCM-1001

    On-line Bushing Monitoring System
    The  ZVCM-1001 On-line Bushing Monitoring System

    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.

    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 CCVT`s 1))
    • Optional configuration with 6 voltage inputs:
    • CCVT 1) Reference test (6 CCVT`s 1))

    The bushing sensors / adapters are connected to the capacitor taps designed for all types of bushings to allow measurement of the leakage current up to 140 mA AC.

    The adapters are designed for bushings with grounded and undergrounded capacitor taps. The adapter is designed to prevent a voltage developing on the equipment, in case that the sensor becomes disconnected from the bushing monitoring system.

    The Bushing Monitor ZVCM-1001 (joint development with ZTZ services) communicates directly with HYDROCAL 1005 and 1008 units and in conjunction with these units, it offers a complete transformer and bushing monitoring system in one package.

    Datasheet