Trane CVHH CenTraVac, Installation, Operation And Maintenance Manual

Page: 66 / 128

66 CVHH-SVX001G-EN
Figure 43. Terminal stud, clamp, and lug assembly
(600V and below)
1
2
3
4
5
1. Belleville washer
2. Terminal lugs
3. Terminal clamp
4. Motor terminal stud
5. Terminal mounting bolt
Bus Bars
N NO OT TIIC CE E
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Bus bars and extra nuts are available as a Trane option.
Install the bus bars between the motor terminals when
using a starter that is:
• A low-voltage Adaptive Frequency ™ Drive (AFD)
• Across-the-line
• Primary reactor/resistor
• Autotransformer
• Customer-supplied
Connect T1 to T6, T2 to T4, and T3 to T5.
N No otte e:: Bus bars are not needed in medium-voltage or
high-voltage applications since only
three terminals are used in the motor and starter.
Starter to Control Panel Wiring
The unit submittal includes the field wiring connection
diagram and the starter-to-control-panel connection
diagram (showing the electrical connections required
between the remote-mounted starter and the control
panel).
N No otte e:: Install separate conduit into the low voltage
(30 volts) section of the control panel.
When sizing and installing the electrical conductors for
these circuits, follow the guidelines listed. Use 14 AWG
for 120V control circuits unless otherwise specified. For
AWG/MCM equivalents in mm
2
, refer to the table in
“Electrical Requirements,” p. 53 .
N NO OT TIIC CE E
A Ad da ap pttiiv ve e F Frre eq qu ue en nccy y D Drriiv ve e ((A AF FD D))//
S Stta arrtte err C Co om mp po on ne en ntt D Da am ma ag ge e!!
F Fa aiillu urre e tto o rre em mo ov ve e d de eb brriiss ffrro om m iin nssiid de e tth he e A AF FD D//
sstta arrtte err p pa an ne ell cco ou ulld d rre essu ulltt iin n a an n e elle eccttrriicca all ssh ho orrtt a an nd d
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IIm mp po orrtta an ntt:: Maintain at least 6 in. (16 cm) between low-
voltage (less than 30V) and high-voltage
circuits. Failure to do so could result in
electrical noise that may distort the signals
carried by the low-voltage wiring, including
the inter-processor communication (IPC)
wiring.
To wire the starter to the control panel, use these
guidelines:
• If the starter enclosure must be cut to provide
electrical access, exercise care to prevent debris
from falling inside the enclosure. Do NOT cut the
Adaptive Frequency
™ Drive (AFD) enclosure.
• Use only shielded, twisted-pair wiring for the inter-
processsor communication (IPC) circuit between
the starter and the control panel on remote-
mounted starters.
N No otte e:: Recommended wire is Beldon Type 8760,
18 AWG for runs up to 1000 ft (304.8 m). For
AWG/MCM equivalents in mm
2
, refer to the
table in “Electrical Requirements,” p. 53 . The
polarity of the IPC wiring is critical for proper
operation.
• Separate low-voltage (less than 30V; refer to the
table in
“Trane-supplied Remote Starter Wiring,” p.
55 ) wiring from the 115V wiring by running each in
its own conduit.
• When routing the IPC circuit out of the starter
enclosure, ensure that it is at least 6 in. (16 cm) from
all wires carrying a higher voltage.
P Po ow we err S Su up pp plly y W Wiirriin ng g