BA 3527161/02 EN
4
1 Safety
1.1 Safety instructions
All personnel involved in installation, commissioning,
operation or maintenance of this equipment must:
- be suitably qualified and
- strictly observe these operating instructions.
Improper operation or misuse can lead to
- serious or fatal injury,
- damage to the equipment and other property of the
user
- a reduction in the efficiency of the equipment.
Safety instructions in this manual are presented in three
different forms to emphasize important information.
NOTE
These notes give important information on a certain
issue.
1.2 Intended use
MESSKO
®
BeTech Oil and Winding temperature
indicators are used to measure temperatures on power
and distribution transformers, reactors or similar equip-
ment.
It is important to read and observe the limit values for
operation indicated on the nameplate and in the operat-
ing instructions prior to commissioning the device.
1.3 Important notes on equipment operation
The user is obliged to comply with the national health
and safety regulations.
It is especially emphasized that works performed to live,
e.g. dangerous-contact components, are permissible
only while these components are either de-energized or
protected against direct contact.
Electrical installation is subject to the relevant national
safety regulations. It is imperative to connect the
ground wire in order to ensure trouble-free operation.
WARNING
This information indicates particular danger to life
and health. Disregarding such a warning can lead
to serious or fatal injury.
CAUTION
This information indicates particular danger to the
equipment or other property of the user. Serious or
fatal injury cannot be excluded.
CAUTION
Installation, electrical connection, commissioning,
and maintenance of the device may only be carried
out by qualified, skilled personnel and only in ac-
cordance with these operating instructions.
It is the responsibility of the user to make sure that
the device is used for the specified application only.
For safety reasons, any unauthorized and improp-
erly executed work, i.e. installation, modification,
alteration of the equipment, electrical connection,
or commissioning of the equipment, are forbidden
without first consulting MESSKO!
1 Safety
2
Product specification
2 Product specification
MESSKO
®
BeTech Oil and Winding temperature
indicators are used to measure temperatures on power
and distribution transformers, reactors or similar equip-
ment.
They always consist of a temperature sensor which is
connected to the bellow type measuring device with a
capillary tube.
The measuring device is equipped with a pointer which
turns to show the temperature on a scale. The measur-
ing system consisting of sensor, capillary tube. The
measuring device is non pressurized and filled with a
liquid.
2.1 BeTech Oil temperature indicator
Pointer thermometers with up to five adjustable
micro switches for indicating the oil temperature. The
indicated temperature is the oil temperature on the sen-
sor of the device. The mechanical measuring system
functions independently and requires no power input.
2.2 BeTech Winding temperature indicator
Pointer thermometers with up to five adjustable micro-
switches for indicating the winding temperature (thermal
image). The temperature rise between cooling liquid
CAUTION
Measuring instruments are sensitive. All parts
should therefore be protected against falling and
against knocks and vibrations.
The capillary tube may not be shortened otherwise
the measuring system will be damaged.