Emerson iPro SERIES Informações Técnicas descarregar pdf (Página 11)

Technical Information

D7.21.2/1011/E

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4.2.2 CoreSense™ Diagnostics with Υ/Δ motors

Terminal box and the current sensing “toroid” connections are

factory-installed. One of the motor power leads must be routed

through Current Sensing Transformer (see Figures 9 & 10 below).

Figure 9: Current sensing transformer

Figure 10: Wiring sensor module and leads routed through the current sensor

One motor lead must be routed through the centre opening of the current sensing transformer.

4.2.3 CoreSense™ Diagnostics with part winding

If using the CoreSense™ Diagnostics module with a part-winding start motor, one power lead of each of the

windings should be passed through the current sensing transformer in the same direction (see Figures 10 and 11)

to provide accurate compressor proofing. If the leads (L2 and L8 in picture below) are not routed in the same

direction, the running current may indicate close to zero.

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