Preface - GE Hydran M2-X Instruction Manual

Hydran* M2-X Instruction Manual

Preface

This manual provides a complete reference for the Hydran M2-X, which is a
unique, continuous, on-line monitor of combustible gases and moisture in dielectric
oils.
The information in this manual may be used by:
• Purchaser or specifier
• Installation planner
• Operator
• Commissioning manager
• Person responsible for collecting the readings
• Maintenance technician
• Troubleshooting technician
WARNING
This manual is not a tutorial on combustible gases or water in dielectric oil. It is
assumed that the reader is already familiar with these subjects. However, forms of
water in oil are summarized in Section 2.1.2.
To simplify the text, the following expressions are used:
• "Supervisory control and data acquisition" (SCADA) is used to identify the
numerous devices (control panel, alarm panel, retransmission unit,
display, terminal, data recorder, external detection device, etc.) on which
can be connected the Hydran M2-X.
• "Sensor" refers to the cylindrical brass assembly that encases the gas
detector and humidity sensor.
This manual is written for the 0–2,000 ppm operating range only. This range is
the one used by most Hydran M2-X's. Should your Hydran M2-X('s) use a different
operating range, please convert the values (in doubt, contact the General Electric
Customer Service; the coordinates can be found at the bottom of page 9).
To help the reader, a Table of Contents is at the beginning of the manual, along
with a Glossary in Appendix M at the end of the manual.
The names of menus, options, parameters, etc., shown on the Hydran M2-X's
display are displayed in bold characters; for example: the Main Menu. The Hydran
MA-029 Rev. 1.0, 30-Jul-18
• All procedures in this manual must be strictly adhered to.
Any deviation from these may cause irreversible damage to
the transformer being monitored and/or the Hydran M2-X,
and may lead to property damage, personal injury and/or
death.
• Installation and maintenance of the Hydran M2-X must be
carried out by qualified personnel only.
Page 13