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Speedfax 2017

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SEM3T<br />

Power<br />

| Selection<br />

Distribution<br />

and Application Guide<br />

Solutions<br />

SEM3T<br />

SEM3T System Configuration in Switchgear<br />

SEM3T System Configuration in Switchboards<br />

Typical SEM3T Thermal Sensor locations in Low Voltage Switchgear.<br />

Typical SEM3T Thermal Sensor locations in Low Voltage Switchgear.<br />

Revised on 10/15/20<br />

Typical configuration<br />

Fig 1: Rear View of Switchgear<br />

SEM3T Sensor on<br />

Power Connector*<br />

SEM3T Sensor on<br />

Power Connector*<br />

Section 1 Section 2<br />

SEM3T Sensor is typically installed at two locations<br />

on LVS as shown in Fig 1 & 2:<br />

*Power Connector (Where Horizontal Bus connects<br />

to Vertical Bus)<br />

Lug Pads (Incoming & Load)<br />

The sensor is installed either under bolt head or<br />

nut as applicable, one sensor per phase.<br />

SEM3T Sensor on Lug Pads.<br />

POWER<br />

MONITORING<br />

9<br />

Mounted over the Lug<br />

Fig 2: Rear Iso View of Switchgear<br />

14<br />

9-32<br />

Siemens Industry, Inc. SPEEDFAX Product Catalog

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