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6.6
Opening
The opening operation is accomplished by either
manually pushing the "open" button or connecting the
external power supply to actuate the shunt opening
release coil. The breaker uses a hydraulic damper to
help absorb some of the opening force. Once the
breaker is open, the indicator will display "OPEN".
6.7
Control Schemes
Refer to Fig. 6-10 for the W-VACi circuit breaker
diagram.
6.8
Selective Parts Configuration
The voltages for the secondary control circuit can be:
24-48-60-110-125-220-250 VDC and 120-220-230
VAC.
Configurations and electrical parameters for selective
parts are presented in the next few sections.
Rated Parameters of UMA Motor
Item
Unit
Rated
VDC (Ua)
Voltage
Rated
VAC (Ua)
Voltage
Voltage
% (Ua)
Range
Time for
(s)
Charging (S)
Rated Parameters of Releases
Item
Unit
Rated
VDC (Ua)
Voltage
Rated
VAC (Ua)
Voltage
Rated
(A)
Current
Shunt
Closing
Release
% (Ua)
Voltage
Range*
Shunt
Opening
Release
% (Ua)
Voltage
Range
52
1
Value
24
48
60
110/125
-
-
-
110/120
85-110
≤15
1
Value
24
48
60
110/125
-
-
-
110/120
≤10
≤5
≤5
≤3
85-110
70-110
65A7355H01 November 2011 www.eaton.com
Rated Parameters of Undervoltage Releases
Item
Rated
Voltage
Rated
Voltage
UVR
Operates,
& Circuit
Breaker
Opens
Limits
UVR does
not operate
Limits
Rated Parameters of Electromagnetic Interlock
Item
Rated
Voltage
Rated
Voltage
Operating
Limits
Continuous
Power (Pc)
1
Insulation voltage for all electronic parts is 2000 V 50/60 Hz
(for 1 min.)
220/250
220/230
220/250
220/230
≤2
Unit
Ua (VDC)
24
48
60
Ua (VAC)
-
-
-
% (Ua)
% (Ua)
Unit
Ua (VDC)
24
48
60
Ua (VAC)
-
-
-
% (Ua)
W (VDC)
VA (VAC)
1
Value
110/125
220/250
110/120
220/230
0-35
70-110
1
Value
110/125
220/250
110/120
220/230
85-110
5
5
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