Mitsubishi Electric FR-A700 Series, Technical Manual

Page: 518 / 550

552
SELECTION
3.9 Compliance with standards
The standard models of inverters comply with the UL Standard, cUL Standard and EN Standard.
3.9.1 Compliance with the UL and CSA standards
(conforming standard UL 508C, LSA C22.2 No.14)
About the UL and cUL compliance
The UL (Underwriters Laboratories Inc.) Standard is a
safety standard in the U.S.A. UL is a non-profit testing
institution established by the U.S. Fire Underwriters'
Association and conducts approval tests on industrial
products. UL has strictly prescribed the safety standard in
an extremely wide range, assuming every possible
situation during use of products. The UL mark has
extremely high authority and reliability and is mandated by
the state laws and city ordinances in many U.S. states.
Canada has a similar standard, the CSA Standard. The
standard equivalent to Canada's CSA Standard has been stipulated by the U.S.A. as the cUL Standard, and products
approved by this Standard are regarded as approved by
the CSA Standard.
Refer to the instruction manual for information on UL and
cUL.
(1) Installation
This inverter is UL-listed as a product for use in an
enclosure. Design an enclosure so that the inverter
surrounding air temperature, humidity and
atmosphere satisfy the specifications.
Wiring protection
For installation in the United States, branch circuit
protection must be provided in accordance with the
National Electrical Code and any applicable
provincial codes.
For installation in Canada, branch circuit protection
must be provided in accordance with the Canada
Electrical Code and any applicable provincial codes.
Provide the appropriate UL and cUL listed Class
RK5, Class T or Class L type fuse or UL489 molded
case circuit breaker (MCCB) that is suitable for
branch circuit protection in accordance with the table
below.
common
cULus mark
[Example]
A700
FR-A720- ‡‡ K 0.4 0.75 1.5 2.2 3.7 5.5 7.5 11 15 18.5 22 30 37 45 55
Rated fuse voltage(V)
240V or more
Fuse maximum
allowable
rating (A)*
Without power factor
improving reactor
15 20 30 40 60 80 150 175 200 225 300 350 400 500 500
With power factor
improving reactor
15 20 20 30 50 70 125 150 200 200 250 300 350 400 500
Molded case circuit breaker (MCCB)
Maximum allowable rating (A)*
15 15 20 25 40 60 80 110 150 175 225 250 350 400 500
FR-A720- ‡‡ K 75 90
Rated fuse voltage(V)
240V or more
Fuse maximum
allowable
rating (A)*
Without power factor
improving reactor
— —
With power factor
improving reactor
600 700
Molded case circuit breaker (MCCB)
Maximum allowable rating (A)*
700 800
FR-A740- ‡‡ K 0.4 0.75 1.5 2.2 3.7 5.5 7.5 11 15 18.5 22 30 37 45 55
Rated fuse voltage(V)
480V or more
Fuse maximum
allowable
rating (A)*
Without power factor
improving reactor
6 10 15 20 30 40 70 80 90 110 150 175 200 250 300
With power factor
improving reactor
6 10 10 15 25 35 60 70 90 100 125 150 175 200 250
Molded case circuit breaker (MCCB)
Maximum allowable rating (A)*
15 15 15 15 20 30 40 50 70 90 100 125 150 200 250