29
05/05 AWB2300-1527D/GB
About this manual
This manual applies to the motor-protective relays ZB12 and
ZB32.
It describes the overload monitoring system for the
protection of motors operating in potentially explosive
atmospheres EEx e areas.
Target group
This manual addresses special personnel who install,
commission and service the motor-protective relay.
Abbreviations and
symbols
The abbreviations and symbols used in this manual have the
following meaning:
X
indicates actions to be taken.
EEx e
"Increased safety“ type of protection
PTB
P
hysikalisch
T
echnische
B
undesanstalt. German
Federal Testing Laboratory: Accredited certification
authority for devices operated in EEx e areas.
NM
Lowest possible setup current
HM
Highest possible setup current
h
Draws our attention towards interesting tips and
additional information
h
Note!
Warns of a hazardous situation that could result in
damage to the product or components.
i
Caution!
Warns of the possibility of a hazardous situation that
could result in major damage and minor injury.
Содержание ZB12 Series
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