10 To 13.8Kv Medium Voltage Motor; Motor Terminal Box - Trane CVHE Installation, Operation And Maintenance Manual

10 to 13.8kV Medium Voltage Motor

W W A A R R N N I I N N G G
H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! !
F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g c c o o u u l l d d
r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y . .
D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e
d d i i s s c c o o n n n n e e c c t t s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . . F F o o l l l l o o w w p p r r o o p p e e r r
l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r
c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y e e n n e e r r g g i i z z e e d d . . V V e e r r i i f f y y t t h h a a t t n n o o
p p o o w w e e r r i i s s p p r r e e s s e e n n t t w w i i t t h h a a v v o o l l t t m m e e t t e e r r . .
All electrical circuits shall be treated as energized until
all lockout/tagout procedures are in place and the
circuit has been tested to verify that it is de-energized.
The medium-voltage motor terminal box cover must
NOT be removed if power is present, or if there is a
possibility that power may be present. Working on
energized medium-voltage circuits is not an approved
practice for normal HVAC maintenance or service.
The motor is suitable for remote-mounted across-the-
line (including circuit breaker starting), primary reactor,
autotransformer, or solid-state starting. Refer to the
unit nameplate for motor data including RLA, LRA, etc.
In all cases of non-Trane supplied starters, the Trane
Engineering Specification for UC800 Starter By Others
(available through your local Trane office) must be
followed in order to ensure proper function and
protection of the chiller. A disconnecting means and
short-circuit protection must be installed ahead of the
starter, unless they are included as part of the starter.
N N o o t t e e : : Trane assumes no responsibility for the design,
documentation, construction, compatibility,
installation, start-up, or long term support of
starters provided by others.

Motor Terminal Box

A large steel motor terminal box is provided to allow
for the field connection of the motor power supply wire
to the motor.
62
Figure 43. Motor terminal box dimensions, in. (mm)
• Motor terminal box cover-only weight is 55 lb
(25 kg).
• Two 7/8-in. (22.225 mm) lifting holes are provided
in the cover.
• Motor terminal box weight without the cover is
215 lb (97.5 kg).
• Two 3/8-in.–16 weld nuts are provided on the top of
the terminal box to allow the use of properly rated
lifting D-rings if removal is needed for clearance
purposes.
N N o o t t e e : : If the box is removed for installation
purposes, the motor terminals MUST be
protected against impact or stress damage.
Field fabrication of a cover or guard is
required.
• The motor terminal box is large enough to
accommodate the use of stress cones.
• If conduit is applied, a flexible connection of the
conduit to the box should be made to allow for unit
serviceability and for vibration isolation. The cable
should be supported or protected against abrasion
and wear on any edges or surfaces. Cable or
conduit openings can be cut at any location in the
box sides, top, or bottom for cable entry. Always
ensure that NO debris remains in the box after
cutting cable entry holes.
CVHE-SVX02M-EN