The HYDROCAL 1003 is an online monitoring system permanently mounted on the transformer. It measures continuously Moisture in Oil (H2O) and the most important faults gases Hydrogen (H2) and Carbon Monoxide (CO).


The HYDROCAL 1001+ is a permanently-installed composite gas-in-oil sensor for the analysis of six dissolved key fault gases such as Hydrogen (H2), Carbon Monoxide (CO), Methane (CH4), Acethylene (C2H2), Ethylene (C2H4), and Ethane (C2H6). To detect an even wider range of potential transformer faults, the HYDROCAL 1001+ analyses additionally the content of Moisture (H2O) in the transformer oil.

HYDROCAL 1005 Offshore

The HYDROCAL 1005 Offshore is an online monitoring system permanently mounted on the transformer and is special designed for Offshore Wind Power
Applications. It allows for the  individual measurement of Moisture in Oil (H2O) and the key gases Hydrogen (H2), Carbon Monoxide (CO), Acetylene (C2H2) and  Ethylene (C2H4) dissolved in transformer oil.


The HYDROCAL MS-7, which is an extension package of the MTE HYDROCAL product line, is providing all these important information. The analog outputs of HYDROCAL MS-7 are directly connectable to the analog inputs of HYDROCAL 1003, 1005 or 1008 units and in conjunction with these units it offers a complete transformer monitoring system in one package

Bushing Monitor ZVCM 1001

The Bushing Monitor ZVCM-1001, which is an extension package to the MTE
HYDROCAL product line, 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
and free standing CT`s.

                                                        WHO WE ARE 

Starting a company from scratch and watching it grow into a multi focus organization is a very fulfilling experience. With good staff, we have built P.A.R. For Trade to what it is today and look forward to more growth in the future.   

About Us

Why do business with us?

P.A.R. For Trade is a supplier of new, refurbished and obsolete products.


We specialise in supplying the “hard to find” parts that many people struggle with. Due to our buying power we can also offer great discounts on many current lines.

-One Contact Person

-Quick Turn-Around

-Competitve Prices

-Long-Term View