Cool Automation CoolMaster 3000T Spécifications télécharger pdf (Page 20)

20 Powermonitor 3000 Master Module

Publication 1404-IN007F-EN-P - November 2009

The shorting terminal block should be located adjacent to the Powermonitor 3000 master

module so that it is readily accessible should service be needed. Use 2.5 mm

(14 AWG) wire

for the short run between the power monitor and the shorting terminal block. Use wiring of 4

(12 AWG) or larger between the shorting terminal block and the CT so that the

additional load of the wiring does not overload the CT and reduce its accuracy.

Do not install fuses or other overcurrent protection in the secondary circuit of a CT.

Refer to System Accuracy Considerations on page 16

for guidelines on PT and CT selection.

Refer to Specifications on page 56

for information on voltage isolation levels and wire

termination recommendations.

The wiring diagrams depict wiring methods for a variety of power system configurations. You

need to configure your power monitor to match the power system configuration for correct

operation.

Refer to the Powermonitor 3000 Unit User Manual, publication 1404-UM001

, for detailed

instructions on unit configuration.

IMPORTANT

You may install either two or three CTs for any of the Delta or Open Delta wiring or

voltage modes.

Refer to the wiring diagrams on pages 28

, 30, and 33 for wiring of a two CT configuration.

Whether there are two or three CTs in a circuit does not affect the voltage wiring.

Refer to the Powermonitor 3000 Unit User Manual, publication 1404-UM001

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Cool Automation CoolMaster 3000T Spécifications Page 20