ABB UEMC 40 B Series Installation And Operating Manual page 4

5. General installation
instructions
This is a general description covering the installation of
a motor operating device. Refer also to point 6, examples
of installation and basic adjustment method.
Note
The motor operating device should not be operated
by driving the screw with a compressed air tool as this
could damage the motors gearwheel.
a) Install the disconnector, shaft and interlocking
between the disconnector and the earthing switch
Mount the elbow gear mechanism if the discon-
nector is to be mounted on the back wall of the
cubicle. Refer to installation instructions for the
disconnector, and also point 6.
b) Make the electrical connections to the motor ope-
rating device and earth the unit.
c) Fit the disconnector as detailed in the basic adjust-
ment instructions, point 6, examples of installation
on various disconnectors.
d) Test operate the motor operating device so that the
coupling ring A-4 is free and the unit is driven by
the motor, or by rotating the screw with a 19 mm
socket spanner. If the motor operating device
is driven by rotating the screw, ensure to stop
when the spring washer bigins to compress. Then
operate the disconnector from the shaft using
the handle, and make note of the position of the
coupling ring when the operating is complete.
The following criteria should be met both in open
and closed position:
– the shaft can be rotated to the point where
the coupling ring latches.
– a margin in the operating angle should be
available before the coupling ring A-4 latches.
e) Change the position of the motor operating mecha-
nism to another spline on the shaft by turning
if required, and repeat until the tolerance in the
control angle in both the open and closed posi-
tions is symetrical.
f) Electrically test operate the disconnector.
g) Tighten all locking bolts and nuts.
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h) Check that the operating symbols are correct.
Symbols for anti-clockwise closed are included in
the delivery of UEMC 40 B_ and D_.
To change direction of operating for
UEMC 40 A1, B1 and D1:
Refer to circuit diagram:
Stick the left hand label to the coupling ring.
To change direction of operation for
UEMC 40 A2, B2 and D2:
– Swap connections X1:13 and X1:14,
red to X1:13 and brown to X1:14.
– Stick the left hand label to the coupling ring.
Note
Models UEMC 40 A1 and UEMC 40 A2 do not usu-
ally need to have their direction of rotation changed
as the direction of operation of the disconnector
can be chosen to suit by turning the larger toothed
gearwheel to the left or right side of the smaller
toothed gearwheel.
i) Select the right label for sticking on to the motor
operating device, according to language and method
of mounting. Label no. GB 3637-1 for push buttons
mounted above and label no. GB 3637-2 for push
buttons mounted below the operating shaft.
Connection of operating device to
a disconnector with an A-mechanism
The opening time for the A-mechanism operated with
the motor operating device is about 1 second. If a
quicker opening time is required, the A-mechanism is
to be fi tted with a tripping coil.
The tripping coil can be connected in parallel with
the opening circuit of the motor operating device which
gives:
– quick opening with tripping coil
– the motor operating device will start at the same
time as the tripping coil
– the motor operating device will be in the correct
position for the following closing operation
– the disconnector will be in the correct position for
earthing
– position indication laps will give both the discon-
nectors and the motor operating devices position.
31 UEMC 157
31 UEMC 161
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