ABB CIRCUIT SHIELD 437W Series - Page 11

Reverse
Power
Relay
IB
7.8
.
1.7
-
1
Page
11
Figure
7
:
T
ypical
Lower
PC
Layout
Control
Voltage
Selector
Plug
437
P
/
437
F
237
P
/
237
F
Series
Maximum
Torque
Angle
Selector
Plug
(
not
supplied
on
earlier
units
)
Factory
Calibration
Pots
:
R
1
1
Maximum
Torque
Angle
R
17
Sector
Width
R
1
9
Time
Delay
Figure
8
:
4
4
Typical
Lower
PC
Layout
RVl
)
(
•
H
*
n
Control
Voltage
Selector
Plug
437
W
/
437
G
Series
Phase
Angle
Calibration
Pot
(
factory
adjustment
)
Maximum
Torque
Angle
Selector
Plug
Pickup
Calibration
Pot
Timing
Calibration
Pot
Time
Curve
Selector
Plug
O
Q
1
Courtesy of NationalSwitchgear.com