1 About this document
These operating instructions are applicable to the POLIM® and MWK/MWD type surge
arresters. These instructions describe the safe and proper use for all phases of operation.
Language of the original operating instructions: English
1.1 Validity
These operating instructions are valid for all the POLIM® and MWK/MWD type surge
arresters, with the exception of the POLIM-D .. PI-2/-3 plug-in type (separable) surge
arresters. The operating instructions of POLIM-D .. PI-2/-3 are available in the document
1HC0019085.
Representative samples of the products are shown on the front page.
1.2 Target group
The target group of these operating instructions is professionals in the field of high-
voltage technology.
Surge arresters may only be commissioned and maintained by persons instructed in the
proper use and handling of the surge arresters.
2 Safety
2.1 Symbols and warnings
Important information and technical notes are emphasised in order to illustrate the correct
operation.
Symbol Meaning
This is a warning sign. It warns you of the danger of injury or death and/or
material damage. Follow all measures marked with such warning signs to avoid
injuries, death and damage to materials.
This sign warns you of the danger of death or serious injury from electric shocks.
Follow all measures marked with such warning signs to avoid injuries and/or
death.
X
This mark indicates that an action is to be performed.
Warning signs in these operating instructions indicate special dangers and list measures
for prevention of the danger. There are three levels of warning:
Warning word Meaning
DANGER Immediate, impending endangerment of your life and health
WARNING Possible impending endangerment of your life and health
CAUTION Possible impending danger of light injuries or damage to materials
Warnings are structured as follows:
WARNING WORD!
The type and source of the danger are listed here.
Possible consequences, which could occur if the measures are not followed, are
listed here.
X
Measures for avoiding the danger are listed here.
1HC0141361 AA | EN | Operating instructions | 3
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