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UL® Cautions, Warnings and Instructions xii
Warnings and Cautions for Troubleshooting and Maintenance
(Standard to comply with : UL508C,CSA C22.2 No.14-05)
Warning Markings
GENERAL:
These devices are open type Power Conversion Equipment. They are intended to be used
in an enclosure. Insulated gate bipolar transistor (IGBT) incorporating microprocessor
technology. They are operated from a single or three-phase source of supply, and intended
to control three-phase induction motors by means of a variable frequency output. The units
are intended for general-purpose industrial applications.
MARKING REQUIREMENTS:
Ratings - Industrial control equipment shall be plainly marked with the Listee’s name,
trademark, File number, or other descriptive marking by which the organization responsible
for the product may be identified;
a) “Maximum surrounding air temperature rating of 50 ºC.”
b) “Solid State motor overload protection reacts with max. 150 % of FLA”.
c) “Install device in pollution degree 2 environment.”
d) “Suitable for use on a circuit capable of delivering not more than 100,000 rms
Symmetrical Amperes, 240 or 480 Volts Maximum.”
e) “When Protected by CC, G, J or R Class Fuses.” or “When Protected By A Circuit
Breaker Having An Interrupting Rating Not Less Than 100,000 rms Symmetrical
Amperes, 240 or 480 Volts Maximum.”
f) “Integral solid state short circuit protection does not provide branch circuit protection.
Branch circuit protection must be provided in accordance with the National Electrical
Code and any additional local codes.”