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MA-005 - MINITRANS Installation Manual - Rev 3.1
29-Sep-15
Page 6 of 85
1
INTRODUCTION
1.1
Product Overview
The MINITRANS™ (herein referred to as the product) is an on-line DGA (Dissolved Gas
Analysis) system for transformer diagnostics. The product measures the following key
fault gases in transformer oil:
hydrogen
,
carbon monoxide
and
acetylene
as well as
moisture in the oil and the transformer load current. Such data provides insight on
transformer condition criteria, such as developing faults, paper degradation and
electrical arcing. Once installed, operation is straightforward. All results are stored within
the product, but can be downloaded to a PC for analysis.
The key features and characteristics are summarised as follows:
Utilises dynamic headspace sampling to extract target gases from the oil sample.
No consumables, such as carrier gases are required.
Accurate results are available as often as once per hour.
Minimal maintenance.
Uses highly accurate and stable Photo-acoustic Spectrographic technology.
Fully embedded microprocessor with non-volatile internal memory storage for
10,000 records.
Stainless steel outdoor-rated IP55 enclosure connected to the transformer by
robust stainless steel tubing.
All gas sensing is carried out internally – no external gas sensors.
Transformer load tracking is available.
One user-configurable relay contact based on absolute gas and moisture values.
Two sunlight-visible LED arrays on the exterior of the enclosure – one green for
power, one red for alarm.
Communication options include: Ethernet, RS-232, Cellular modem (GSM/GPRS),
PSTN modem, RS-485 and Fibre Optic. Other options may be available on request.
Internal USB connection provided for commissioning and service, or local data
download.
1.2
Manual Scope
This manual details the installation requirements and procedure, including important pre-
installation tasks to be considered when planning and preparing for the installation. It
examines mounting, plumbing, power, electronics and communications — including tools,
supplies and items to purchase. This manual must be read in its entirety prior to
installation so as to prepare the site and obtain the necessary equipment. Refer to the
appendices for details and record site details in the Installation Record (see Appendix C).