Eaton PKZM4/XTPR DC1 Series, Руководство пользователя

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Description of device
27
01/11 MN03402002Z-DE/EN
Current ranges of the PKZM4/XTPR…DC1
motor-protective circuit-breakers
The rated motor current is set on the PKZM4/XTPR…DC1
units by means of a current dial
a
(
a
fig. 1, page 26).
Seven different types can be used to monitor motors
operating at a rated motor current of 10 to 63 A
(
a
table 1).
Table 1: Current ranges of the
PKZM4/XTPR…DC1
Temperature compensation
Two parameters influence the deflection of the bimetallic
releases. There is for one the heat which is generated in
proportion to the current flow, and secondly, the influence of
the ambient air temperature. The influence of the ambient
air temperature is automatically compensated within a
temperature range from -5 to +55 °C by means of an addi-
tional current-free bimetallic release that continuously
corrects the tripping range.
Phase failure
The PKZM4/XTPR…DC1 motor-protective circuit-breakers
are phase failure sensitive. The deflecting action of all three
bimetallic releases is directed towards a tripping bridge that
Part no. Current range I
e
[A]
PKZM4-16 XTPR016DC1 10 - 16
PKZM4-25 XTPR025DC1 16 - 25
PKZM4-32 XTPR032DC1 24 - 32
PKZM4-40 XTPR040DC1 32 - 40
PKZM4-50 XTPR050DC1 40 - 50
PKZM4-58 XTPR058DC1 50 - 58
PKZM4-63 XTPR063DC1 55 - 63