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6 Electrical connection
6.6 Closing the Disconnect Unit
☐ The handles on the front plate of the enclosure must be set to "Off", so that the shafts can snap
in.
☐ The 2 mounting clamps for the front plate of the enclosure must be set to the correct position
(see figure below). The 2 mounting clamps are moveable and must be arranged
3
11
⁄
in. ... 1 ft. 3
4
Figure 42: Position of the mounting clamps.
1.
Danger of crushing
Take into account the heavy weight of the front plate of the enclosure.
• Two persons are needed to move the front plate of the enclosure to the Disconnect Unit.
• Make sure that one person always holds the front plate of the enclosure while the other
person performs work at it.
• Hold the front plate of the enclosure with 2 hands and move it to the front of the
Disconnect Unit. The distance between the Disconnect Unit and its front plate must be
approximately 8 in. (200 mm).
2. Connect the ground strap from the bottom left
corner of the Disconnect Unit to the front plate of
the enclosure. Fasten the screw with a torque of
70 in‒lbs. (8 Nm).
56
DisconACDC_SCUS-IUS103110
3
⁄
in. (300 mm ... 400 mm) from the sides.
4
SMA America, LLC
D IS C
O N N
E C T U
N IT
SM A
Installation Guide
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