Control Power Transformer; Power Factor Correction Capacitors; (Optional) - Trane CVHH CenTraVac Installation, Operation And Maintenance Manual

N N o o t t e e : : Graphic labels (shown above) are used for CE
application only.
I I m m p p o o r r t t a a n n t t : :
• Before servicing, disconnect all power
sources and allow at least 30 minutes
for capacitors to discharge.
• All electrical enclosures—unit or remote
—are IP2X.
For CE units, the convenience outlet in the control
panel requires a suitable adaptor to meet the needs of
customers with different plug requirements.
Control Power Transformer Option
The Control Power Transformer (CPTR) option provides
a means to isolate the incoming line voltage required
for the chiller control circuits and the oil/refrigerant
pump from the compressor incoming line voltage. The
CPTR option provides a solution for customers that
cannot afford to lose communication with the chiller or
extended restart times due to lost incoming power.
The CPTR option will benefit:
• UPS customers
• Customers requiring fast restarts
• Customers who need controls sourced from a clean
dedicated source
• Customers with building automation/
communication systems who want to maintain
chiller status reporting during power loss
CVHH-SVX001G-EN
• Chillers with remote-mounted medium-voltage
Adaptive Frequency™ Drives (AFDs) or customer-
supplied starters
C C o o m m p p o o n n e e n n t t D D a a m m a a g g e e ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d c c a a u u s s e e a a n n
e e l l e e c c t t r r i i c c a a l l s s h h o o r r t t w w h h i i c c h h 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 c c o o m m p p o o n n e e n n t t
d d a a m m a a g g e e . .
R R e e m m o o v v e e d d e e b b r r i i s s f f r r o o m m i i n n s s i i d d e e t t h h e e C C P P T T R R o o p p t t i i o o n n
e e n n c c l l o o s s u u r r e e p p a a n n e e l l b b e e f f o o r r e e t t u u r r n n i i n n g g t t h h e e p p o o w w e e r r o o n n . .
The standard unit-mounted CPTR option shall have an
enclosure with a disconnect and will require customer-
supplied power.
CVHH CenTraVac™ chillers have a low-voltage CPTR
option and a medium-voltage CPTR option.
The CPTR option involves a single phase 4kVA
transformer(s) and the oil pump motor circuit to be
located together in an enclosure that is unit-mounted.
There is three-phase line power between 380 to
600 Vac feeding this enclosure. Wherever the 4kVA
transformer is located, the oil pump motor circuit will
be located along with it.
X39003892001A With the CPTR option, the control power transformer(s)
and oil pump motor circuit are NOT inside of the
starter.
For the low-voltage CPTR option, the single phase
4kVA transformer feeds the 120V control power to all of
the controls. The three-phase line power feeds a motor
starter and overload oil pump motor circuit which
feeds the three-phase oil pump motor.
For the medium-voltage CPTR option, there are two
single-phase 4-kVA transformers: one of the 4kVA
transformers feeds the 120V control power to all of the
controls. The second transformer feeds a combination
motor controller oil pump motor circuit which then
feeds a single-phase oil pump motor.
N N o o t t e e : : Refer to the unit nameplate for maximum
Service personnel are required to ensure that the
incoming power supply voltage provided by the
customer to the CPTR option enclosure unit-mounted
panel is as per submittal and nameplate.
Power Factor Correction
Capacitors (Optional)
Power factor correction capacitors (PFCCs) are
designed to provide power factor correction for the
compressor motor. PFCCs are available as an option
for unit- and remote-mounted starters.
P P o o w w e e r r S S u u p p p p l l y y W W i i r r i i n n g g
N N O O T T I I C C E E
overcurrent protection and minimum current
ampacity values for connecting to the CPTR
option enclosure.
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