Grounding (Earthing); Control Wiring - Trane TR200 Operator's Manual

Installation
•
Connect the 3-phase motor wiring to bypass
terminals T1 (U), T2 (V), and T3 (W). See the
connection drawing inside the cover of the unit.
•
Depending on the configuration of the
equipment, motor wiring may be connected to
overload or terminal block.
•
Torque terminals in accordance with the
information provided on the connection diagram
inside the cover of the unit.
•
Motor wiring should never exceed the following
maximum distances: 300m (1000 ft) for
unshielded, 150m (500 ft) for shielded.
•
Motor wiring should always be as short as
practical.

3.4.8 Grounding (Earthing)

WARNING
GROUNDING HAZARD!
for operator safety, it is important to ground the option
panel properly. Failure to do so could result in death or
serious injury.
WARNING
ELECTROCUTION AND FIRE HAZARDS WITH
IMPROPERLY INSTALLED AND GROUNDED FIELD
WIRING!
Improperly installed and grounded field wiring poses FIRE
& ELECTROCUTION hazards. To avoid these hazards, you
MUST follow requirements for field wiring installation and
grounding as described in the National Electrical Codes
(NEC) and your local/state electrical codes. All field wiring
MUST be performed by qualified personnel. Failure to
follow these requirements could result in death or serious
injury.
NOTE!
It is the responsibility of the user or certified electrical
installer to ensure correct grounding (earthing) of the
equipment in accordance with national and local electrical
codes and standards.
•
Follow all local and national codes for proper
electrical equipment grounding (earthing).
•
Correct protective grounding of the equipment
must be established. Ground currents are higher
than 3 mA.
•
A dedicated ground wire is required for input
ground.
3-26
•
Connect the ground wire directly to a reliable
earth ground. Grounding studs are provided on
the back plate of the panel for grounding.
•
Do not use conduit connected to the panel as a
replacement for a ground wire.
•
A high strand count ground wire is preferred for
dissipating high frequency electrical noise.
•
Keep the ground wire connections as short as
possible.
•
Ground the motor to the panel with insulated
wire run inside metal conduit with motor leads.

3.4.9 Control Wiring

WARNING
Electrocution and Fire Hazards with Improperly Installed
and Grounded
Field Wiring!
Improperly installed and grounded field wiring poses FIRE
& ELECTROCUTION hazards. To avoid these hazards, you
MUST follow requirements for field wiring installation and
grounding as described in the National Electrical Codes
(NEC) and your local/state electrical codes. All field wiring
MUST be performed by qualified personnel. Failure to
follow these requirements could result in death or serious
injury.
Detailed instructions for terminal connection, control
wiring installation, and operation are shown in Section 5
Electromechanical Bypass (EMB2) Operation and Section 6
Electronically Controlled Bypass (ECB) Operation.
•
It is recommended that control wiring is rated for
600 V for 480 V and 600 V drives and 300 V for
200-240 V drives.
•
Isolate control wiring from high power
components in the drive.
•
See 3.4.2 Wire and Cable Access for details.
BAS-SVX49A-EN