BENSHAW RediStart MX2 SEP, Руководство пользователя

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RediStart MX
2
- SEP Synchronous Controller User Manual
22
3.4 Wiring Considerations
3.4.1 Wiring Practices
When making power and control signal connections, the following should be observed:
• Power wiring to the motor must have the maximum possible separation from all other wiring. Do not run
control wiring in the same conduit; this separation reduces the possibility of coupling electrical noise between
circuits. Minimum spacing between metallic conduits containing different wire groups should be three inches
(8cm).
• Minimum spacing between different wiring groups in the same tray should be six inches.
• Wire runs outside an enclosure should be run in metallic conduit, or have shielding/armor with equivalent
attenuation.
• Whenever power and control wiring cross, it should be at a 90 degree angle.
• Different wire groups should be run in separate conduits.
NOTE : Local electrical codes must be adhered to for all wiring practices.
3.4.2 Considerations for Control and Power Wiring
Control wiring refers to wires connected to the control terminal strip that normally carries 24V to 115V. Power
wiring refers to wires connected to the line and load terminals that normally carry 208VAC to 600VAC
respectively. Select power wiring as follows:
• Use only UL or CSA recognized wire.
• Wire voltage rating must be a minimum of 300V for 230VAC systems and 600V (Class 1 wire) for 460VAC
and 600VAC systems.
• Grounding must be in accordance with NEC, CEC, or local codes. If multiple controllers are installed near
each other, each must be connected to ground. Take care to not form a ground loop. Grounds should be
connected in a STAR configuration.
• Wire must be made of copper and rated 60/75°C for units 124 Amps and below. Larger amp units may use
copper or aluminum wire. Refer to NEC table 310-16 or local codes for proper wire selection.
3.4.3 Considerations for Signal Wiring
Signal wiring refers to the wires connected to the control terminal strip that are low voltage signals, below 15V.
• Shielded wire is recommended to prevent electrical noise interference from causing improper operation or
nuisance tripping.
• Signal wire rating should carry as high of a voltage rating as possible, normally at least 300V.
• Routing of signal wire is important to keep as far away from control and power wiring as possible.
3.4.4 Meggering a Motor
If the motor needs to be meggered, remove the motor leads from the controller before conducting the test.
Failure to comply may damage the SCRs and WILL damage the control board, which
will not be replaced under
warranty.
3.4.5 High Pot Testing
CAUTION : If the controller must be high pot tested, perform a DC high pot test. The maximum high pot
voltage must not exceed 2.0 times rated RMS v 1000VAC (High pot to 75% of factory). Failure
to comply
will damage the control board, which will not be replaced under warranty. An example to find
the maximum high pot voltage is (2.0 * rated RMS v 1000) * 0.75.