Eaton SPI9000 User Manual download pdf (Page 38)

SPI9000 Inverter Unit FR4 – FR8 User Manual

3-8 For more information visit: www.EatonElectrical.com

MN04004003E

April 2006

Cable Installation and the UL Standards

To meet the UL (Underwriters Laboratories) regulations, a UL-approved copper cable with a

minimum heat-resistance of +60/75°C must be used.

The tightening torques of the terminals are given below in Table 3-8.

Table 3-8: Tightening Torques of Terminals



Tightening torque of terminal connection to the isolative base in in-lb.

Cable and Motor Insulation Checks

1. Motor cable insulation checks

Disconnect the motor cable from terminals U, V and W of the inverter and from the

motor. Measure the insulation resistance of the motor cable between each phase

conductor as well as between each phase conductor and the protective ground

conductor.

The insulation resistance must be >1MΩ.

2. DC supply cable insulation checks

Disconnect the DC supply cable from terminals B- and B+ of the inverter and from DC

supply. Measure the insulation resistance between each conductor and ground.

The insulation resistance must be >1MΩ.

3. Motor insulation checks

Disconnect the motor cable from the motor and open the bridging connections in the

motor connection box. Measure the insulation resistance of each motor winding. The

measurement voltage must equal at least the motor nominal voltage but not exceed

1,000V.

The insulation resistance must be >1MΩ.

Inverter Voltage Frame

Tightening Torque

(in-lb)

SPI003 – 023 480V FR4 4.4 – 5.3

SPI031 – 046

SPI003 – 027

480V

690V

FR6 65

SPI061 – 087

SPI034 – 062

480V

690V

FR7 65

SPI105

SPI052 – 080

480V

690V

FR8 177/80

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Eaton SPI9000 User Manual Page 38

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