MTE HYDROCAL1005 - 1. General; 2.2 Security precautions for installation

HYDROCAL 1005 Manual for Installation and Operation Page 4/111
1. General
The HYDROCAL 1005 is a permanently-installed multi-gas-in-oil analysis system with transformer
monitoring functions. It allows for the individual measurement of moisture and the key gases hydro-
gen (H
2
), carbon monoxide (CO), acetylene (C
2
H
2
) and ethylene (C
2
H
4
) dissolved in transformer oil.
As hydrogen (H
2
) 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 (C
2
H
2
) and ethylene (C
2
H
4
) further classifies the nature of a fault as overheat-
ing, partial discharge or high energy arcing. The device can serve as a compact transformer monitor-
ing system by the integration / connection of other sensors present on a transformer via its analog
inputs:
 5 analog outputs 0/4-20mADC
 4 analog inputs 0/4-20 mADC (Option)
 6 analog inputs 0/4-20 mADC +20% / 0-80 VAC +20% (option)
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):
 5 digital relay outputs
 5 digital opto-coupler outputs (Option)
Key Advantages
 Hydrogen (H
2
), Carbon monoxide (CO), acetylene (C
2
H
2
) and ethylene (C
2
H
4
) measurement
 Moisture-in-oil measurement
 Communication interfaces ETHERNET 10/100 Mbit/s (copper-wired or fibre-optical) and RS 485
to support proprietary communication protocols and to be open / prepared for substation commu-
nication protocols IEC 61850, MODBUS, DNP 3 etc.
 Optional on-board GSM and analog modems for remote communication
 6 analog AC current inputs for the connection of capacitive HV bushing sensors for HV bushing
monitoring applications
The present operating instructions are divided in the following sections:
 Instructions for mounting the HYDROCAL 1005 unit (chapter 2)
 Hardware components of HYDROCAL 1005 (chapter 3)
 Description of software of the HYDROCAL 1005 unit (chapter 4)
 Description of Windows software HydroSoft (chapter 5)
 RS 485 Wiring (chapter 6)
 New HydroSoft Scheduler functions (chapter 7)
 Technical Data of HYDROCAL 1005 (chapter 8)
 HYDROCAL 1005 dimensional drawings (chapter 9)