Yaskawa Sigma-5 Safety Precautions for SGDV Servo Amplifier - Manual (Page 24)

E-22
6 Installation Conditions of UL Standards
To adapt SERVOPACKs to the UL standards, make sure that the following
conditions are met.
• Pollution degree: 2
• Protection class: 10
• Altitude: 1000 m max.
• Tightening torque: Varies*
1
• The end user must use a transient suppressive device on the 24 VDC con-
trol power input of the 400 V main power input type SERVOPACKs to
limit transient overvoltages to 500 V maximum.
(Example: surge absorber, etc.)
• Current capacity: Varies*
2,
*
3
* 1. Use the maximum tightening torque listed in the table of Wire Size and
Tightening Torque for Connectors and for Terminal Screw.
* 2. Install the fuse or circuit breakers listed in the 3.1 Molded-case Circuit
Breaker and Fuse in accordance with the guidelines of NEC.
* 3. The following restrictions apply, depending on the SERVOPACKs used.
SERVOPACK
Model SGDV-
Restrictions
180A, 200A Available rated current for modeled-case circuit breaker: 40 A or
less
330A • Available rated current for non-time delay fuse: 70 A or less
• Available rated current for time delay fuse: 40 A or less
• Do not use single wires.
470A, 550A • Available rated current for molded-case circuit breaker: 60 A or
less
• Available rated current for non-time delay fuse or time delay
fuse: 60 A or less
590A, 780A • Available rated current for molded-case circuit breaker: 100 A or
less
• Available rated current for non-time delay fuse or time delay
fuse: 100 A or less
(Available rated current for class J non-time delay or faster fuse:
125 A or less)
210D, 260D • Available rated current for molded-case circuit breaker: 60 A or
less
• Available rated current for non-time delay fuse: 60 A or less
• Available rated current for time delay fuse: 35 A or less
280D, 370D • Available rated current for molded-case circuit breaker: 80 A or
less
• Available rated current for non-time delay fuse: 125 A or less
• Available rated current for time delay fuse: 75 A or less