Chapter 8 Wiring Optional User-Supplied Braking Resistors; Installation Guidelines - Reliance electric GV3000/SE Hardware Reference, Installation, And Troubleshooting Manual

8.1 Installation Guidelines

Wiring Optional User-Supplied Braking Resistors
Wiring Optional User-Supplied
This chapter describes how to select and wire optional user-supplied braking
resistors.
ATTENTION: The user is responsible for conforming with all applicable
local, national, and international codes. Failure to observe this precaution
!
could result in damage to, or destruction of, the equipment.
Use the following guidelines when installing braking resistors:
•
The cable length of the connection between the braking unit and the resistor must
not exceed 2.5 m (8 ft).
•
Provide ground connections as shown in figure 8.1.
•
The conductors should be twisted together and run separate from other conductors.
•
If the braking resistor is mounted in a separate enclosure, this must be metallic
conductive and the diameter of ventilation holes should not exceed 6 mm (.236 in).
•
Heat-resistant cables and cable sockets (minimum 90° C) must be used to connect
the braking resistor.
•
Wire rated at a minimum of least 600 volts for 460 VAC must be used. Refer to table
8.1 for cable cross-section specifications.
ATTENTION: It is important to use wire rated at 600 volts for 460 VAC
because this wiring may make contact with uninsulated 460 VAC
!
components. Failure to observe this precaution could result in damage
to, or destruction of, the equipment.
•
If the drive installation must be in compliance with the European community
electromagnetic compatibility standards, refer to Appendix C.
C
HAPTER
Braking Resistors
8
8-1