Technical Data; Input Power Connections (Supplement To Ach550-Uh User's Manual) - ABB ACH550 User Manual

E-Bypass Configurations for ACH550 Drives

Technical Data

Input Power Connections (Supplement to ACH550-UH User's Manual)

Branch Circuit Protection
Input power is connected to the ACH550 with E-Bypass through a door interlocked
disconnect switch or circuit breaker. Neither of these inputs are fused. The branch
circuit that provides power to the ACH550 with E-Bypass must include appropriate
motor branch circuit protective devices to provide short circuit and ground fault
protection for the motor in the bypass mode.
When connected to a 480 VAC power source, the ACH550 with E-Bypass with the
circuit breaker option is suitable for use on a circuit capable of delivering not more
than 20,000 RMS symmetrical amperes (14,000 RMS symmetrical amperes for the 3
and 5 HP models). When connected to a 240 VAC power source, the ACH550 with
E-Bypass with the circuit breaker option is suitable for use on a circuit capable of
delivering not more than 50,000 RMS symmetrical amperes.
Fuses
NOTE! Although fuses listed are similar in function to fuses listed in the ACH550-UH
User's Manual, physical characteristics may differ. Fuses from other manufacturers
can be used if they meet the ratings given in the table. The fuses recommended in
the table are UL recognized.
Drive input fuses are provided to disconnect the drive from power in the event that a
component fails in the drive's power circuitry. Since fast-acting fuses are provided,
the branch circuit protection will not clear when the drive input fuses blow. If the drive
input fuses blow, the motor can be switched to Bypass without replacing fuses or
resetting a circuit breaker. The drive's electronic protection circuitry is designed to
clear drive output short circuits and ground faults without blowing the drive input
fuses. Drive input fuse specifications are listed in the following tables.
208...240 Volt Fuses
HP
1
1.5
2
3
5
7.5
10
208... 240 Volt
Identification
ACH550-xx-04A6-2
ACH550-xx-06A6-2
ACH550-xx-07A5-2
ACH550-xx-012A-2
ACH550-xx-017A-2
ACH550-xx-024A-2
ACH550-xx-031A-2
Drive Input Fuse Ratings
Frame
Amps
Size
(600V)
R1 15
R1 15
R1 15
R1 15
R1 30
R2 30
R2/R3 50
37
Bussmann
Type
KTK-R-15
KTK-R-15
KTK-R-15
KTK-R-15
KTK-R-30
KTK-R-30
JJS-50
Technical Data