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Installing Primary AC Power, Continued

Circuit Breaker

The circuit breaker should have the correct ampere rating, number of poles, and rated for the area that it

will be installed. The circuit breaker must be installed in close proximity to the Maxum II so it is easily

accessible to the service technician for turning power off to perform maintenance functions or for safety

purposes. In addition, the circuit breaker must be labeled as the disconnecting device for the Maxum II.

CAUTION All AC power (Mains) wiring shall be in accordance with all applicable codes.

Conduit

The AC primary power rigid and explosion proof conduit must be ½” (1.26 cm) minimum diameter. The

conduit end, which terminates at the Enclosure, must be equipped with an explosion proof seal. The

conduit terminates at the Enclosure opening located on the top left side.

It is recommended that a conduit hub be used to securely connect the conduit to the EC Enclosure. The

conduit hub type used must meet the electrical codes for the area of installation.

Specific Application Information

 Application Drawing Package, Block Diagram Utility Connections sheet and Arrangement

Drawing Electronics Controller sheet.

 CE Conformance Requirements page

17.

Power Entry

The primary AC (Mains) power can be routed to the Maxum II through side or top access plates. The

plates can be punched to accommodate conduit or cable gland connectors.

Cable Gland

Removable

Access Plate

Figure 2-2: AC Power Entry Through Top Access Plate

Power Connections

The AC input power connection is made to a removable green connector (TB1) located on the upper left-

hand side of the Power Entry Control Module (PECM). Refer to Figure 2-3. The bottom connector

assembly is hardwired to the (PECM) circuit board and is non-removable. TB2 is used if the analyzer has

a second high wattage heater. TB10 is the power source for the Maxum II electronics, exclusive of the

heaters.

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Siemens GC..M.. Installationshandbuch Seite 20