MTE HYDROCAL 1001 Plus - Safety Precautions

HYDROCAL 1001+ Installation and operation manual Page 3/76
1. General
The HYDROCAL 1001+ is a permanently installed composite gas-in-oil sensor for the analysis of
moisture in oil and the following dissolved key fault gases (TDCG = Total Dissolved Combustible
Gases):
Fault gas TDCG contribution
Hydrogen (H
2
) approx. 20 %
Carbon Monoxide (CO) approx. 30 %
Methane (CH
4
) < 5 %
Acetylene (C
2
H
2
) 100 %
Ethylene (C
2
H
4
) approx. 32 %
Ethane (C
2
H
6
) < 5 %
Moisture in Oil (H
2
O) 100%
To provide an even more comprehensive transformer monitoring solution, the HYDROCAL 1001+
analyses additionally the content of moisture (H
2
O) in the transformer oil.
The integration of 6 relevant key gases into a total weighted gas concentration and the measurement
of moisture in oil, enables the HYDROCAL 1001+ to react to most transformer faults and makes the
unit to a compact and cost effective tool used in particular for early transformer fault detection and
preventative maintenance.
The HYDROCAL 1001+ is equipped with 2 analog 0/4 ... 20 mA outputs for the dissolved composite
gas-in-oil and moisture in oil analysis results and 4 digital relay outputs (Gas high alarm, gas high-
high alarm, moisture alarm and function alarm)
Key advantages:
 Composite measurement of hydrogen (H
2
), carbon monoxide (CO), methane (CH
4
), acetylene
(C
2
H
2
), ethylene (C
2
H
4
) and ethane (C
2
H
6
) and dissolved moisture (H
2
O) in the transformer oil
 Relay outputs with light indicators showing potential alarms
 Easy and fast installation without any operational interruption of the transformer
 It provides communication interfaces ETHERNET 10/100Mbit/s (copper-wired or fibre-optical) and
RS485 to support proprietary communication protocols and to be prepared for sub-station com-
munication protocols MODBUS
®
TCP and MODBUS
®
serial RTU/ASCII
The construction has been significantly simplified and size has been reduced compared to other
products in the market period.
The present operating instructions are divided in the following sections:
 Installation instructions (chapter 2)
 Hardware components (chapter 3)
 Firmware (chapter 4)
 Technical data (chapter 5)
 Dimensional drawings (chapter 6)