Siemens SMP Switchboards User Manual

SMP Switchboards

Selection and application guide

www.siemens.ca/powerdistribution

Switchboards

Contents

Sentron SMP Switchboards
Type SMP
	Construction Details Features		2
	Features		3
	Specification		8

Sentron® SMP Switchboards

Construction Details Construction

Simplified system design.

A typical SMP switchboard consist of a floor mounted, wall supported service section, and a distribution section. The wireway can also be added where

required by the local utility or if additional cable termination space is required.

Wireways are modular to allow flexibility.

The wireway is available in 2 depths to suit customer needs. Wireway has split front doors as standard with optional hinged doors. The lug pads are standard NEMA hole pattern and accept up to 5 mechanical lugs or 6 compression lugs.

90oC rated wireway.

The termination temperature for main incoming cables can be sized at 90oC for bussed pull sections.

Service Entrance Sections house a variety of equipment.

b Service Entrance Sections.

Service sections can be fed directly from overhead by cable.

Service entrance sections equipped for bottom feed will accept cable from underground directly into the service section.

b Utility Metering

In addition to the main device, the service section contains utility metering provisions. “Cold” metering provisions (CT’s on the load side of the main device) are furnished. The CT’s are provided by the utility company. The compartment will be built to utility company standards, with hinged doors and provisions for utility metering equipment.

b User Metering

The service section provides space for the Siemens Digital Meter with remote display, and it’s associated components.

b Main protective device

The MCCB is mounted individually so that it can be located quickly in an emergency. SMP switchboards will accommodate different types of main

circuit breakers. Selection depends on the characteristics of your individual electrical system.

Distribution Sections have ample wiring room and front accessibility.

Generous top or bottom gutters have been created by locating the bus-link in the top or bottom of the distribution section, so there’s ample room to run cables into the distribution section and make connections.

Standard bolted covers allow complete access to load conductors. Future flexibility comes standard in the Siemens SMP switchboard. The distribution section can accommodate any combination of panel mounted devices, including MCCBs and fusible disconnect switches.

Operating temperatures are in accordance with CSA Standards

Bus bars are available in standard tin-finished aluminum or optional silver-finished copper. Standard bus is sized on the basis of heat rise criteria, in accordance with CSA C22.2 #31. All bus bars are sized to limit heat rise to 65°C above an ambient temperature of 40°C.

Bus-Link Connections are accessible from the front.

The Bus-Link can be bolted from the front of the switchboard. Each bus-link is attached by grade five bolts to assure solid joints between sections, and to maintain full bus ampacity through the joint.

To make installation and servicing of the bus-link easier, all phase and neutral busses are stacked one above the other.

Cable Terminals

Screw mechanical connectors (lugs) are provided as standard equipment.

2