Operating manual HVL 120-0.3
Assembly
o
Assemble the fixing bracket for the low voltage limiter and the T-bracket
for the cable connection according to the illustration.
o
For this purpose, use the supplied M12x20 stainless steel bolts and
tension washers.
o
Tighten the bolts to a torque of 25 Nm. Use a suitable torque wrench for
this purpose.
o
The low voltage limiter is now pre-assembled and can be installed at
the intended position in the network.
Installation
Before beginning the work, check the safety distance to adjacent live parts or
equipment. If there is a danger of inadvertent touching, the 5 safety rules for
establishing and securing the de-energised condition at the work location must be
carried out (see the section entitled Safety instructions).
Secure yourself against falling, if the intended mounting position is on a mast or on a
high-level structure. For this purpose, use a secure working platform and wear your
personal protective equipment.
The contact surface, to which the low voltage limiter is to be fitted by means of the fixing bracket, must be flat
and clean.
The mounting position of the low voltage limiter can be freely chosen. It must be noted, however, that the
type plate and serial number should remain easily readable without removing the low voltage limiter. Polarity
reversal is not possible owing to the bipolar design.
The cable connection should be maintained as short as possible, since the protective effect of the low
voltage limiter (especially in the case of fast-acting processes which can occur, for example, from the effects
of lightning) is greatly influenced by this length dimension.
The cross section of the cable connection must be constructed in compliance with the national regulations
and the requirements of the railway network operator.
Putting into service
No further action or work is required at the installation location to put the equipment into service.
1HC0023892 AA
EN
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