ABB CR490 Series Einbauanleitung

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DEH-40628 Installation Instructions For NEMA Size 3

300/400-Line Combination Magnetic Starters

CR307-CR308, CR310-CR311, CR387, CR390, CR407-CR408

CR410-CR415, CR487, CR490, CR492, CR494 Series

CAUTION:

Before installing in a nuclear

application, determine that the product is

intended for such use.

WARNING:

Disconnect power

before Installing or servicing.

RATINGS

Max.

AC Volts

Volt-

Contin

age

ous

Amp

Rating

600

115

200

230

460/575

DESCRIPTION

A ABB 300/400-Line full voltage magnetic

combination starter consists of a magnetic

contactor with a three leg block overload

relay and a manually operated circuit

breaker or disconnect switch. The

disconnect switch may either be fusible or

non-fusible. The non-fusible disconnect

switch provides a means of manually

disconnecting the motor from the line. The

circuit breaker or fusible disconnect switch

provides

motor

branch

protection. The overload relay provides,

motor protection against running and

stalled motor overload.

These instructions do not purport to cover all details or variations in equipment not to pro vide for every possible contingency to be

met in connection with installation, operation or maintenance. Should further information be desired or should particular

problems arise which are not covered sufficiently for the purchaser's purpose, the matter should be referred to the ABB Company.

The overload relay is provided with a

yellow trip indicator which is located to

the right of the res et arm, and is visible

when the overload relay is tripped.

Max.Hp

For AC Motors

Single-

Poly-

Phase

7½

FEATURES

1. Strongbox coil.

2. Overload relay, incorporates a dial

for ±10% field adjustment of tripping

current, so that it is no longer

short-circuit

necessary to change heaters to

eliminate s uch problems as nuisance

tripping in hot weather.

3. Overload trip indicator.

4. Straight through wiring.

5. Oversized power terminals will

accommodate up to 1/0 wire.

6. Starter can be disassembled and

inspected in a matter of seconds.

7. Circuit breaker or disconnect

switch is mechanically interlocked

with the enclosure door to prevent

opening the door until the handle is

moved to the OFF position.

INSTALLATION

Before connecting the starter:

1. Remove all packing.

2. Clean magnet mating surfaces of any

dust or foreign matter.

3. Select heaters in accordance with

heater table, which accompanies each

device.

4. Operate movable magnet and

operating arm by pressing on the

nameplate to assure free movement.

5. Mount the starter on a sturdy vertical

support.

6. The overload relay may be reset

manually by depressing and releasing

the reset arm. Overload relays with an

optional normally open contact are

electrically isolated from the normally

closed contact.

7. Provide motor branch circuit

protection in accordance with the

National Electrical Code.

COIL REMOVAL

The encapsulated coil is impervious

to moisture, dirt, and oil. It resists

mechanical damage and failure due

to high humidity. No tools are

required to remove coil.

1. Remove power from device.

2. Press against coil while pulling up

slightly on coil retainers (A—Figure 1

or 2) and move retainers away from

coil.

3. Withdraw magnet assembly, coil,

molded cover, and movable arm

from device.

4. Withdraw spring clip (B—Figure 1

or 2) and remove armature from

movable arm.

5. Remove coil from magnet.

6. Replace coil.

7. Reassemble device by reversing

procedure.

CONTACT REMOVAL

Movable contacts can be inspected

and replaced in seconds—without

tools (Figure 3).