6
Instruction Leaflet
IL012001EN
Effective October 2013
Instruction Leaflet for the
KES 310+ Electronic Trip Unit
EATON
www.eaton.com
Figure 9. Remote Maintenance Mode Wiring Diagram.
+
-
NO
NC
-
+
24 VOLT DC
LEFT SIDE OF BREAKER
YELLOW
BLACK
BLUE
RED
3. Neutral Current Sensor Installation
Ground fault trip units are supplied from the factory with pigtail lead
connections for a neutral current sensor (white and grey wires).
A neutral current sensor shown in Figure 10 is available. Series
G Ground Fault Trip Units detect ground fault currents through
Residual Sensing. They are not designed to use source ground or
zero sequence ground fault sensing methods. If the system neutral
is grounded, but no phase to neutral loads are used, the neutral cur-
rent sensor is not necessary. In that case, the white and grey leads
on the trip should be cut off before installation. If the system neutral
is grounded and phase to neutral loads are used, then the neutral
current sensor must be used. It should be connected to the breaker
according to Figure 11. It has the same turns ratio as the phase cur-
rent sensors in the trip unit.
Figure 10. Neutral Current Sensor.
[37,34]
1.47
4X R
[7,11]
.28
4X R
[9,14]
.36
1.50 AT TOP
[38,1]
.03
[0,76]
AT BASE
[73,91]
2.91
.50
12,70]
AT TOP
[144,53]
5.69
[142.49]
5.610
[7,87]
.31
[6,35]
.25
[12,70]
.50
[36.58]
1.44
[30,18]
1.188
AT TOP
[57,15]
2.25
AT BASE
[59,18]
2.33
[29,72]
1.17
AT BASE
[146,05]
5.75
[57,15]
2.25
[55,58]
2.188
2X Ø
[7,11]
THRU HOLE
.280
(
)
([111,13])
4.376
(
)
([50,80])
2.000
(
)
([25,40])
1.000
(
)
([15.67])
.617
T/POTTING
T/CONDUC
TOR
1/2" BOLTS
(NOT INCLUDED)
POLARITY MARKINGS
