Miller 059015051, Руководство пользователя

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OM-287348 Page 16
4-6. Electrical Service Guide (Three-Phase)
Elec Serv 2019 − 10
Failure to follow these electrical service guide recommendations could create an electric shock or fire hazard. These recommenda-
tions are for a dedicated circuit sized for the rated output and duty cycle of the welding power source.
In dedicated circuit installations, the National Electrical Code (NEC) allows the receptacle or conductor rating to be less than the rating
of the circuit protection device. All components of the circuit must be physically compatible. See NEC articles 210.21, 630.11, and
630.12.
CE-marked equipment shall only be used on a supply network that is a three-phase, four-wire system with an earthed neutral.
Actual input voltage should not fall below 340 volts AC or rise above 460 volts AC. If actual input voltage is outside this range, unit may not operate
according to specifications.
Rated Supply Voltage (V)
260i 300iP 320i
400 400 400
Rated Maximum Supply Current I
1max
(A) 15.4 19.0 21.5
Maximum Effective Supply Current I
1eff
(A) 9.7 12.0 12.7
Max Recommended Standard Fuse Rating In Amperes
1
Time Delay Fuses
2
Normal Operating Fuses
3
20
20 20
25 25
30
Maximum Recommended Supply Conductor Length In Feet (Meters)
4
179 (55) 142 (43) 127 (39)
Raceway Installation
Minimum Supply Conductor Size In AWG (mm
2
)
5
14 (2.5) 14 (2.5) 14 (2.5)
Minimum Grounding Conductor Size In AWG (mm
2
)
5
14 (2.5) 14 (2.5) 14 (2.5)
Reference: 2017 National Electrical Code (NEC) (including article 630)
1 If a circuit breaker is used in place of a fuse, choose a circuit breaker with time-current curves comparable to the recommended fuse.
2 “Time-Delay” fuses are UL class “RK5” . See UL 248.
3 “Normal Operating” (general purpose - no intentional delay) fuses are UL class “K5” (up to and including 60 amps), and UL class “H” ( 65 amps and
above).
4 Maximum total length of copper input conductors in entire installation, raceway and/or flexible cord.
5 Raceway conductor data in this section specifies conductor size (excluding flexible cord or cable) between the panelboard and the equipment per
NEC Table 310.15(B)(16) and is based on allowable ampacities of insulated copper conductors having a temperature rating of 75 ° C (167 ° F) with not
more than three single current − carrying conductors in a raceway.
Notes