3.15 Protect the Drive during Failures
112 YASKAWA SIEPC71061753C GA500 Technical Manual
3.15 Protect the Drive during Failures
◆ Factory-Recommended Branch Circuit Protection for UL Listing
Use branch circuit protection to protect against short circuits and to maintain compliance with UL61800-5-1.
Yaskawa recommends connecting semiconductor protection fuses on the input side for branch circuit protection.
Refer to Single-Phase 200 V Class on page 112, Three-Phase 200 V Class on page 112, and Three-Phase 400 V
Class on page 113for more information.
WARNING! Electrical Shock Hazard. After the drive blows a fuse or trips an RCM/RCD, do not immediately energize the drive
or operate peripheral devices. Wait for the time specified on the warning label at a minimum and make sure that all indicators
are OFF. Then check the wiring and peripheral device ratings to find the cause of the problem. If you do not know the cause of
the problem, contact Yaskawa before you energize the drive or peripheral devices. If you do not fix the problem before you
operate the drive or peripheral devices, it can cause serious injury or death.
• 200 V Class
Use the fuses specified in this document to prepare the drive for use on a circuit that supplies not more than
31,000 RMS and not more than 240 Vac when there is a short circuit in the power supply.
• 400 V Class
Use the fuses specified in this document to prepare the drive for use on a circuit that supplies not more than
31,000 RMS and not more than 480 Vac when there is a short circuit in the power supply.
The built-in short circuit protection of the drive does not provide branch circuit protection. The user must provide
branch circuit protection as specified by the National Electric Code (NEC), the Canadian Electric Code, Part I
(CEC), and local codes.
■ Single-Phase 200 V Class
Table 3.16 Factory-Recommended Branch Circuit Protection: Single-Phase 200 V Class
Drive Model
Maximum Applicable Motor Output
kW (HP)
Time Delay Fuse
Semiconductor Protection Fuse Rated Current
Manufacturer: EATON/Bussmann
ND HD
Class J, CC, and T Fuse
Rated Current
A
Model
Fuse Rated Current
A
B001 0.18 (1/6) 0.1 (1/6) 2 FWH-25A14F 25
B002 0.37 (1/4) 0.25 (1/4) 3.5 FWH-25A14F 25
B004 0.75 (3/4) 0.55 (1/2) 9 FWH-60B 60
B006 1.1 (1.5) 1.1 (1) 15 FWH-80B 80
B010 2.2 (3) 1.5 (2) 20 FWH-100B 100
B012 3.0 (3) 2.2 (3) 30 FWH-125B 125
B018 - 4.0 (5) 40 FWH-150B 150
■ Three-Phase 200 V Class
Table 3.17 Factory-Recommended Branch Circuit Protection: Three-Phase 200 V Class
Drive Model
Maximum Applicable Motor Output
kW (HP)
Time Delay Fuse
Semiconductor Protection Fuse Rated Current
Manufacturer: EATON/Bussmann
ND HD
Class J, CC, and T Fuse
Rated Current
A
Model
Fuse Rated Current
A
2001 0.18 (1/6) 0.1 (1/6) 3 FWH-25A14F 25
2002 0.37 (1/4) 0.25 (1/4) 3.5 FWH-25A14F 25
2004 0.75 (3/4) 0.55 (1/2) 6 FWH-25A14F 25
2006 1.1 (1.5) 0.75 (1) 10 FWH-25A14F 25
2008 1.5 (2) 1.1 (1.5) 12 FWH-70B 70
2010 2.2 (3) 1.5 (2) 15 FWH-70B 70
2012 3.0 (4) 2.2 (3) 20 FWH-70B 70
2018 4.0 (5) 3.0 (4) 30 FWH-90B 90
2021 5.5 (7.5) 4.0 (5) 35 FWH-90B 90
2030 7.5 (10) 5.5 (7.5) 50 FWH-100B 100
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