HP Class SMF Manuel d'utilisateur télécharger pdf

Class SMF

Class SMF fractional horsepower

starters provide overload protection as

well as manual ON / OFF control for

small motors in a variety of industrial

and commercial installations.

Available in one or two pole versions,

these devices are suitable for use with

AC single phase motors to 1 HP. Two

pole starters can also be used with DC

motors to

⁄

HP. Typical applications

include fans, conveyors, pumps, and

small machine tools. The continuous

current rating is 16 amperes.

Overload trip assembly motor protection

is provided by a Type SMFH thermal

heater element which must be installed

before the starter will operate.

Two-Speed Class SMF manual starters

are designed for control of small single

phase AC motors having separate wind-

ings for high and low speed operation.

Two toggle operated starters are used,

with overload protection included for

each motor winding. Surface mounting

devices, and those with a gray flush

plate, utilize a mechanical interlock

which allows direct control of the motor

by means of the toggle operators.

Class MMS and MRS

These motor starting switches provide

manual ON / OFF control of single or

three-phase AC motors, where overload

protection is not required, or is provided

separately.

These devices are suitable for use with

AC three-phase motors up to 10 HP.

Compact construction and a 600 volt

rating make these switches suitable for

a wide range of industrial and commer-

cial uses. Typical applications include

small machine tools, pumps, fans, con-

veyors, and many other types of electri-

cal machinery. They can also be used

on non-motor loads such as resistance

heaters.

The continuous current rating is 30

amperes at 250 volts max., 26.4 am-

peres at 277 volts max., 20 amperes

at 600 volts max, 30 ampere resistive

at 600 volts max.

Class MMS, two-speed manual switch-

es may be used with separate winding,

three-phase or single-phase AC motors

where overload protection is not

required, or is provided separately. Two

switches are employed to give ON /

OFF control in each speed.

Class MRS, reversing manual switches

provide a compact means of starting,

stopping and reversing AC motors where

overload protection is not required, or is

provided separately. They are suitable for

use with three-phase squirrel cage

motors, and for single-phase motors

which can be reversed by reconnecting

motor leads. Two switches are used, one

to connect the motor for forward rota-

tion, and one for reverse.

Class SMF, MMS and MRS

NEMA Type 1 surface mounting enclo-

sures are sheet steel with a thermoplas-

tic wrap-around cover for convenience

in wiring. The NEMA Type 1 enclosure

is also available in oversized and jumbo

versions allowing more wiring space. A

zinc alloy die casting or non-metallic

enclosure is used for NEMA Type 4

enclosures. NEMA 7 & 9 enclosures are

supplied as standard with provisions for

locking in the ON or OFF position.

Standard red or non-standard green

neon pilot light units are available facto-

ry installed in NEMA Type 1 surface and

flush mounting, and NEMA Type 4

enclosures, or as a field modification kit

for NEMA Type 1 enclosures and gray

flush plates.

An “Emergency-OFF” toggle operator

extender is available for NEMA Type 1

surface mounted units. The extender

has a red vinyl button that provides a

fast and easy method for locating and

switching the device’s toggle operator

into the OFF position. The Emergency

OFF Actuator is available in kit form

only for field installation.

An optional Handle Guard / Lock-OFF on

NEMA Type 1 enclosed starters pre-

vents accidental operation of the toggle

and also allows the toggle operator to

be padlocked in either the ON or the

OFF position. This handle guard can be

factory installed on NEMA Type 1

enclosed starters and is also available in

kit form for field installation on NEMA

Type 1 surface and flush mounting

enclosures. Standard NEMA Type 4

metallic enclosures include provision for

padlocking in the OFF position.

AC Controls

Manual Starters and Switches

285CSI Section 16160

Siemens Electrical Products and Systems

Specification Guide

AC Controls

General

Type F02

Type K02

Typical Wiring Diagrams

Class SMF Class MMS

1 Pole

2 Pole

2 Pole with

Selection Switch

2 Pole –– 1 Phase 3 Pole –– 3 Phase

1 2 3 4 5 6 ... 28 29

AC Controls 1
Magnetic Contactors 18

Résumé du contenu

Page 1 - AC Controls

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Page 21

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HP Class SMF Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Système de soudage HP Class SMF. HP Class SMF User's Manual Manuel d'utilisatio

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