Schneider Electric Model 6 Export Motor Control Centers Instruction Sheet

80446-300-01A

10/2001

Seneca, SC, USA

Model 6 Export Motor Control

Centers

Centros de control de motores

Model 6 Export

Tableau de départs moteur

débrochables Model 6 Export

Class/Classe/Classe 8998

Instruction Boletín de Directives

Bulletin instrucciones d'utilisation

Retain for future use. / Conservar para uso futuro. / À conserver pour

usage ultérieur.

Read these instructions carefully and look at the equipment to become

familiar with the device before trying to install, operate, or maintain it. The

following special messages may appear throughout this bulletin or on the

equipment to warn of potential hazards or to call attention to information that

clarifies or simplifies a procedure.

The addition of either symbol to a “Danger” or “Warning” safety label

indicates that an electrical hazard exists which will result in personal injury if

the instructions are not followed.

This is the safety alert symbol. It is used to alert you to potential personal

injury hazards. Obey all safety messages that follow this symbol to avoid

possible injury or death.

NOTE: Provides additional information to clarify or simplify a procedure.

Electrical equipment should be serviced only by qualified personnel. No

responsibility is assumed by Schneider Electric for any consequences arising

out of the use of this material. This document is not intended as an instruction

manual for untrained persons.

This equipment has been tested and found to comply with the limits for a

Class A digital device, pursuant to part 15 of the FCC Rules. These limits are

designated to provide reasonable protection against harmful interference

when the equipment is operated in a commercial environment. This

equipment generates, uses, and can radiate radio frequency energy and, if

not installed and used in accordance with the instruction manual, may cause

harmful interference to radio communications. Operation of this equipment in

a residential area is likely to cause harmful interference in which case the

user will be required to correct the interference at his own expense.

NOTICE

DANGER

DANGER indicates an imminently hazardous situation which, if not

avoided, will result in death or serious injury.

WARNING

WARNING indicates a potentially hazardous situation which, if not

avoided, can result in death or serious injury.

CAUTION

CAUTION indicates a potentially hazardous situation which, if not

avoided, can result in minor or moderate injury.

CAUTION

CAUTION, used without the safety alert symbol, indicates a potentially

hazardous situation which, if not avoided, can result in property damage.

PLEASE NOTE

CLASS A FCC STATEMENT

Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 Table of Contents

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SECTION 1—ABOUT THE MODEL 6 MCC . . . . . . . . . . . . . . . . . . . . . . . 7

Square D Literature List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

SECTION 2—SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 9

SECTION 3—RECEIVING, HANDLING, AND STORING THE MCC . . . 10

Receiving the MCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Handling the MCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Equipment Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Moving the MCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Storing the MCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

SECTION 4—INSTALLING THE MCC . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Locating the MCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Aligning MCC Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Joining IP 20 and IP 52 Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Positioning the MCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Joining Corner Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Securing Structures to the Floor . . . . . . . . . . . . . . . . . . . . . . . . 16

Installing Splice Gaskets in IP 52 Enclosures. . . . . . . . . . . . . . . . . . 17

Splicing Standard Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Splicing Special Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Joining IP 24 Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Splicing Power Bus for IP 20, IP 24, and IP 52 Enclosures . . . . . . . 21

Splicing Ground Bus for IP 20, IP 24, and IP 52 Enclosures . . . . . . 23

Splicing Offset Horizontal Bus (Left Side of Structure Only). . . . . . . 24

Conductor Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Load and Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Cable Connection Torque Values. . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Component Instructional Information . . . . . . . . . . . . . . . . . . . . . . . . 26

SECTION 5—OPERATING THE MCC . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Pre-Operation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Energizing the MCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

SECTION 6—MAINTAINING THE MCC . . . . . . . . . . . . . . . . . . . . . . . . . 29

Examining the Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Maintaining Bus Bars and Incoming Line Compartments. . . . . . . . . 29

Maintaining the Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Removing the Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Maintaining the COMPAC™ 6 Control Unit . . . . . . . . . . . . . . . . . . . 35

Removing the COMPAC 6 Unit. . . . . . . . . . . . . . . . . . . . . . . . . 35

Performing Tests and Maintenance with the Control

Unit Removed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Stab Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Circuit Breaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Operator Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Starter Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Control Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Overload Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Starter Interlocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Barriers and Insulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

TABLE OF CONTENTS

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

Table of Contents October 2001

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Special Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Reassembling the MCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Performing an Insulation Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Maintaining the MCC After a Fault Has Occurred . . . . . . . . . . . . . . . 41

SECTION 7—CIRCUIT BREAKER SETTINGS . . . . . . . . . . . . . . . . . . . . 43

Adjusting the Magnetic Trip Setting . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Accessing the Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

SECTION 8—EXPANDING THE MCC. . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Ordering Additional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Installing Additional MCC Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Installing a COMPAC™ 6 Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Control and Load Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Cable Connection Torque Values. . . . . . . . . . . . . . . . . . . . . . . . 48

Installing Control Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

SECTION 9—TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

SECTION 10—INSULATION RESISTANCE LOG . . . . . . . . . . . . . . . . . . 63

APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Removing the Horizontal Bus Barrier Panels. . . . . . . . . . . . . . . . . . . 65

Installing the Horizontal Bus Barrier Panels. . . . . . . . . . . . . . . . . . . . 65

Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 List of Figures

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Figure 1: The Model 6 Export Motor Control Center . . . . . . . . . . . . . . 7

Figure 2: Packaged Export Motor Control Center . . . . . . . . . . . . . . . 10

Figure 3: Moving an MCC with a Fork Truck. . . . . . . . . . . . . . . . . . . 11

Figure 4: Proper Use of a Sling to Lift the MCC . . . . . . . . . . . . . . . . 12

Figure 5: Horizontal Wireway Covers Removed (left) and

Two-piece Bus Barriers Removed (right). . . . . . . . . . . . . . 14

Figure 6: Bolting Sections Together . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 7: Base Channel Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 8: Model 6 Export MCC on the Right Splicing to an

Existing Model 6 MCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 9: Special Section Splicing (special section on left). . . . . . . . 18

Figure 10: Attaching the Multi-Section Bracket . . . . . . . . . . . . . . . . . . 19

Figure 11: Removing the Mid and End Deflector Caps from the

Top of the MCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 12: Securing the Vertical Channels . . . . . . . . . . . . . . . . . . . . . 20

Figure 13: Replacing the Lifting Angle Hardware . . . . . . . . . . . . . . . . 20

Figure 14: Removing the Bolts on the Splice Assembly . . . . . . . . . . . 21

Figure 15: Aligning the Splice and Bus Holes . . . . . . . . . . . . . . . . . . . 21

Figure 16: Placing a Conical Washer Under the Bolt Head. . . . . . . . . 22

Figure 17: Torquing the Bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 18: Location of the Ground Bar Bolt. . . . . . . . . . . . . . . . . . . . . 23

Figure 19: Ground Bar Bolts Replaced . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 20: Splicing Offset Horizontal Bus . . . . . . . . . . . . . . . . . . . . . . 24

Figure 21: Wiring in the Top Horizontal Wire Trough . . . . . . . . . . . . . 25

Figure 22: Vertical Wire Trough Grommet. . . . . . . . . . . . . . . . . . . . . . 26

Figure 23: Terminal Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 24: Typical Bus Connection Points. . . . . . . . . . . . . . . . . . . . . . 30

Figure 25: Top-Located Main Lug Compartment. . . . . . . . . . . . . . . . . 30

Figure 26: Control Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 27: Operating Mechanism in the OFF Position . . . . . . . . . . . . 32

Figure 28: Loosening Captive Quarter-turn Fasteners . . . . . . . . . . . . 32

Figure 29: Releasing the Lock-in Device (when supplied) . . . . . . . . . 32

Figure 30: Disconnected Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 31: Pulling the Twin Handle Cam Mechanism Forward . . . . . . 33

Figure 32: Operating the Mechanism-to-Structure Interlock . . . . . . . . 33

Figure 33: Locked Out Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 34: Control Unit Bottom Plate Folded Down. . . . . . . . . . . . . . . 34

Figure 35: Driving Out the Hinge Pin. . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 36: Operator Handle in the OFF Position. . . . . . . . . . . . . . . . . 35

Figure 37: Control Station Plate Removed . . . . . . . . . . . . . . . . . . . . . 36

Figure 38: Operator Handle and Interlock Release. . . . . . . . . . . . . . . 36

Figure 39: Stab Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 40: Operator Mechanism in the OFF Position . . . . . . . . . . . . . 38

Figure 41: Inspecting Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 42: Control Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 43: Overload Relay and Electrical Connections. . . . . . . . . . . . 39

Figure 44: Manual Bus Shutter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 45: Magnetic Trip Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 46: Installing Unit Shelves and Doors . . . . . . . . . . . . . . . . . . . 46

Figure 47: Removing the Manual Bus Shutter. . . . . . . . . . . . . . . . . . . 46

LIST OF FIGURES

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

List of Tables October 2001

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Figure 48: Pulling the Twin Handles of the Cam Mechanism Forward. 46

Figure 49: Handles Flush with the Front of the MCC . . . . . . . . . . . . . . 47

Figure 50: Tightening the Control Unit Lock-In Panel

(when supplied) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 51: Vertical Wire Trough Grommet . . . . . . . . . . . . . . . . . . . . . . 47

Figure 52: Connecting the Power and Control Leads. . . . . . . . . . . . . . 47

Figure 53: Control Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 54: Unit Torque Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 55: Reinstalling the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 56: Aligning the Arrows on the Panels. . . . . . . . . . . . . . . . . . . . 65

Figure 57: Right Panel (side view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Figure 58: Installing the Right Panel into the Rear Groove. . . . . . . . . . 66

Table 1: Approximate MCC Shipping Weights . . . . . . . . . . . . . . . . . 11

Table 2: Connection Torque Values for Main

Lug Compartments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 3: Connection Torque Values for Main and

Branch Feeders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 4: Bus Connection Torque Values. . . . . . . . . . . . . . . . . . . . . . 30

Table 5: Component Selection Table . . . . . . . . . . . . . . . . . . . . . . . . 50

Table 6: Main and Branch Circuit Breakers. . . . . . . . . . . . . . . . . . . . 51

Table 7: Starter Unit Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 8: Starter Unit Contactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Table 9: Starter Unit Overload Relays. . . . . . . . . . . . . . . . . . . . . . . . 56

Table 10: Stab Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table 11: Model 6 Export Motor Control Center

Troubleshooting Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

LIST OF TABLES

Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 Section 1—About the Model 6 MCC

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Motor control centers provide the most suitable method for grouping

electrical motor control and other related devices in a compact, economical,

freestanding installation. Motor control centers (MCCs) are made of:

Totally enclosed, dead front, freestanding structures bolted together

Modular control units housed and supported by the structures

A common bus bar for distributing power to the control units

A network of wire trough and conductor entrance areas that

accommodate outgoing load and control wires

Figure 1: The Model 6 Export Motor Control Center

Control units contain components such as combination motor starters,

branch feeder devices, and lighting panelboards. Each of these components

is mounted in an individual, isolated compartment that has its own cover.

The standard MCC width is 20 in. (508 mm) with a 4 in. (102 mm) wide

vertical wireway. The standard height of all MCC structures is 91.5 in.

(2324 mm) without the 3 in. (76 mm) lifting angle. All units are mounted on

the front side of the MCC. In this arrangement, an MCC section is 15 in.

(381 mm) or 20 in. (508 mm) deep.

An optional 25 in. (635 mm) wide section with a 9 in. (229 mm) wide wireway

is also available. Larger sections are available for mounting larger equipment.

SECTION 1—ABOUT THE MODEL 6 MCC









8998-3057

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

Section 1—About the Model 6 MCC October 2001

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This bulletin contains installation, operation, maintenance, and

troubleshooting instructions for the Model 6 Export MCC. The Model 6 Export

MCC is a North American Low Voltage MCC that complies with International

Electrotechnical Commission (IEC) standard 60439-1. Components of the

Model 6 Export MCC are recognized by the IEC. Square D designs its Export

MCCs with devices that are available worldwide, such as:

• TELEMECANIQUE® contactors

•MERLIN GERIN

® circuit breakers

• TELEMECANIQUE pilot devices

• TELEMECANIQUE relays

The Model 6 Export MCC is certified by third party organizations (ASEFA,

LOVAG) to meet the requirements of the IEC standard for MCCs—IEC

60439-1, Low voltage switchgear and controlgear assemblies.

The following Square D publications may be useful in the setup,

maintenance, and regular operation of your Model 6 Export MCC. Upon

request, your local Schneider Electric field office can provide them to you in

print. Or, you can download these documents from the Technical Library at

www.SquareD.com.

Product Type Publication No.*Title Publication Type

Motor Control

Centers 8998CT0101 Model 6 Export Motor Control

Centers Catalog

Circuit Breakers/

Switch

Disconnectors

0600PL9701R4/99 MERLIN GERIN Pricing Price List

ART76687 COMPACT MERLIN GERIN

LV Circuit Breakers and Switch

Disconnectors Catalog

Contactors 8502CT9901R2/01 IEC-Style Contactors and

Starters Catalog

ART94323 TELEMECANIQUE

International Contactors Catalog

Relays 9110CT9702 LT6 Multifunction Relays Catalog

ART74600 LT6 Multiprotection Relays User Manual

Circuit Monitors 3020IM9806 POWERLOGIC Circuit Monitor

Series 2000 Instruction Bulletin

All 0100PL0001 Square D Digest 172 Price List

* Represents the current revision level of the document, and may vary from the document

number shipped with your equipment.

Square D Literature List

Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 Section 2—Safety Precautions

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Carefully read and follow these safety precautions before attempting to lift,

move, install, use, or maintain Model 6 Export MCCs and their components.

SECTION 2—SAFETY PRECAUTIONS

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION

• This equipment must be installed and serviced only by qualified

electrical personnel.

• Qualified electrical personnel must perform work in accordance with

all applicable national and local electrical codes.

• Perform such work only after reading and understanding all of the

instructions contained in this bulletin.

• Turn off all power supplying this equipment before working on or

inside equipment.

• Always use a properly rated voltage sensing device to confirm power

is off.

• Beware of potential hazards, wear personal protective equipment,

and take adequate safety precautions.

• Before performing visual inspections, tests, or maintenance on the

equipment, disconnect all sources of electric power. Assume that all

circuits are live until they have been completely de-energized, tested,

locked out, and/or tagged out. Pay particular attention to the design

of the power system. Consider all sources of power, including the

possibility of backfeeding.

• Replace all devices, doors, and covers before turning on power to this

equipment.

Failure to follow these instructions will result in death or serious

injury.

DANGER

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

Section 3—Receiving, Handling, and Storing the MCC October 2001

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MCCs are constructed in shipping blocks of up to three vertical sections. This

allows for ease of handling during transportation and installation. At the job

site, the main horizontal bus of all shipping blocks are spliced together using

captive horizontal splice bars.

Before they are shipped from the factory, MCCs are visually, electrically, and

mechanically inspected by professional quality control analysts. Certification

of quality control testing is available upon request.

After leaving quality control, each shipping block is carefully packaged and

attached to a skid (see Figure 2).

Figure 2: Packaged Export Motor Control Center

Inspect the MCC for damage upon receipt. Delivery of the equipment to a

carrier at any of the Square D plants or other shipping point constitutes

delivery to the purchaser. Title and all risk of loss or damage in transit shall

pass to the purchaser at that time, regardless of freight payment. The

purchaser must make all claims for loss and damage to the carrier.

If the packaging material is removed, replace it for protection until the MCC

is installed.

SECTION 3—RECEIVING, HANDLING,

AND STORING THE MCC

8998-3056

Receiving the MCC

Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 Section 3—Receiving, Handling, and Storing the MCC

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Adequate equipment—such as a fork truck, crane, or rods and pipe rollers—

must be available for handling MCCs. Table 1 shows approximate shipping

weights of single sections equipped with typical units. Use this table to

determine the type of handling equipment you will need.

As shown in Table 1, weights vary by enclosure type and depth. To minimize

the risk of injury and equipment damage while moving the MCC, follow these

guidelines:

• Use caution when moving heavy equipment.

• Verify that the equipment used to move the MCC is rated to handle its

weight.

• Fork trucks, when available, provide a convenient method of moving

MCCs (see Figure 3). When removing the MCC from a shipping pallet,

carefully balance and secure it using a safety strap.

Figure 3: Moving an MCC with a Fork Truck

Table 1: Approximate MCC Shipping Weights

IEC Enclosure Type Depth 1 Section 2 Sections 3 Sections

IP 20, IP 52 15 in.

(381 mm) 600 lb.

(272 kg) 1200 lb.

(544 kg) 1800 lb.

(816 kg)

IP 24 15 in.

(381 mm)

(26.6 [676] overall)

900 lb.

(408 kg) 1800 lb.

(816 kg) 2700 lb.

(1225 kg)

IP 20, IP 52 20 in.

(508 mm) 750 lb.

(340 kg) 1500 lb.

(680 kg) 2250 lb.

(1020 kg)

IP 24 20 in.

(508 mm)

(31.6 [803] overall)

1050 lb.

(476 kg) 2100 lb.

(953 kg) 3150 lb.

(1429 kg)

Handling the M

CC

HAZARD OF BODILY INJURY OR EQUIPMENT DAMAGE

• Use extreme caution when moving sections. The MCC has a high

center of gravity, which may cause it to tilt.

• Do not attempt to lift or attach lifting means to sections equipped with

pull boxes.

Failure to follow these instructions can result in death or serious

injury.

WARNING

Equipment Needed

Moving the MCC

8998-3190

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

Section 3—Receiving, Handling, and Storing the MCC October 2001

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• Each shipping block has lifting angles for handling the MCC with overhead

cranes. Take the following precautions when using a crane:

a. Handle MCCs in the upright position only.

b. Select rigging lengths that will compensate for any unequal weight

distribution.

c. Do not exceed the 45° maximum angle between the vertical and lifting

cables (see Figure 4).

d. Only use slings that have safety hooks or shackles. Do not pass ropes

or cables through the holes in the lifting angle.

Figure 4: Proper Use of a Sling to Lift the MCC

After the shipping section is in place, its lifting angle may be removed and

discarded. To prevent foreign materials from entering the shipping section,

replace all hardware that secured the lifting angle.

NOTE: Do not attempt to lift or attach lifting means to sections equipped with

pull boxes.

If the MCC cannot be placed into service upon receipt, store it in a clean, dry,

ventilated building that is free from temperature extremes. Acceptable

storage temperatures range from 0 °C (32 °F) to 40 °C (104 °F).

If the storage area is cool and/or damp, provide enough heat to prevent

condensation inside the MCC. Contact your local Square D field office for

specific requirements.

ADo not pass ropes

or cables through

lift holes. Use

slings with safety

hooks or shackles.

1/2 A

or more

45° max

8998-9821

HAZARD OF EQUIPMENT DAMAGE

Never store MCCs outdoors. Outdoor storage is inadequate, even with the

protection of a tarpaulin.

Failure to follow this instruction can result in equipment damage.

CAUTION

Storing the MCC

Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 Section 4—Installing the MCC

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This section explains how to locate, install, and join Model 6 MCC

enclosures, and how to splice power and ground bus. For information related

to removing and installing existing and new units, see “Section 8—Expanding

the MCC” on page 45 or the information included with the shipment of the

new MCC equipment.

MCCs are designed for use in non-hazardous locations. Before installing the

MCC, choose a well-ventilated location that is free from excess humidity,

dust, and dirt. The temperature of the area should be no less than 0 °C

(32 °F) and no greater than 40 °C (104 °F). Protect the enclosure from water

and moisture.

Install MCCs in an area with a minimum of 3 ft. (914 mm) of space in front of

front-of-board construction. This free space provides adequate room to

remove and install units. (More space may be required for some applications;

refer to applicable national standards.) Provide at least 0.5 in. (13 mm) of

space between the back of front-of-board MCCs and a wall. For damp

locations, provide at least 6 in. (152 mm).

When selecting a location to install an MCC, carefully consider accessibility,

overhead clearances, and future expansions. Considering these factors will

eliminate many difficulties during this and future MCC installations.

MCCs are assembled in the factory on a smooth, level surface to verify that

all sections are properly aligned. Provide a similar smooth, level surface to

install the MCC. An uneven foundation may cause shipping blocks, units, and

doors to become misaligned. Unless bottom plates are installed in each

vertical section, the surface under an MCC must be made of a

non-combustible material.

SECTION 4—INSTALLING THE MCC

Locating the MCC

HAZARD OF ELECTRIC SHOCK, BURN, OR EXPLOSION

• This equipment must be installed and serviced only by qualified

electrical personnel.

• Turn off all power supplying this equipment before working on or

inside equipment.

• Always use a properly rated voltage sensing device to confirm power

is off.

• Replace all devices, doors, and covers before turning on power to this

equipment.

• When moving MCC sections, follow the instructions in “Handling the

MCC” on page 11. The MCC has a high center of gravity, which may

cause it to tilt.

Failure to follow these instructions will result in death or serious

injury.

DANGER

Aligning MCC Sections

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

Section 4—Installing the MCC October 2001

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Before positioning the MCC sections, check for damaged bus bars and

insulators. If the bus is bent or insulators are broken, do not install the MCC.

Report any damage to the carrier.

NOTE: A joining hardware kit is provided in the top horizontal wireway cover

on the right side of each shipping split. Captive splice bars are

pre-assembled on the horizontal bus on the left side of each shipping split.

NOTE: For gasket installation instructions, see “Installing Splice Gaskets in

IP 52 Enclosures” on page 17 before joining sections.

To mount and splice a new MCC section to an existing Model 6 section, or to

join two or more new shipping splits, follow these steps:

1. Remove the horizontal wireway covers in all sections, providing access to

the ground bus and section front splicing bolts (see Figure 5).

2. To gain access to the section’s rear splicing bolts, slide the panels of the

the two-piece bus barriers (see Figure 5) in the sections adjacent to a

splice connection (the left and right sections).

NOTE: Follow the instructions in the “Appendix” on page 65 to remove

the two-piece bus barriers.

3. Make provisions for fastening the structure(s) to the floor. See page 16 for

fastener locations.

4. Supporting the MCC by its base channels and/or lifting angles, lift it into

place. Align the front edges of the base channels to form a continuous

front.

5. Using the notches in the base channels, gradually move the sections into

alignment with a crowbar (see Figure 5).

NOTE: Use caution when moving MCC sections, as they are top-heavy.

See “Handling the MCC” on page 11 before moving the MCC.

Figure 5: Horizontal Wireway Covers Removed (left) and Two-piece

Bus Barriers Removed (right)

Joining IP 20 and IP 52 Sections

Positioning the MCC

8998-3182

8998-3183

Base channel

notches

Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 Section 4—Installing the MCC

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1. Open the wireway door on the left section. Remove the section joining

hardware kit that is bagged and tied to the right front corner channel.

2. Locate the six rectangular notches on the inside surface of the corner

channels (see Figure 6).

NOTE: Special sections have plastic covers that must be removed to gain

access to the front clearance holes. For purposes of this instruction bulletin,

a special section is an MCC section that does not have vertical bus.

3. Using six of the 3/4 in. (19 mm) x 1/4–20 hex head thread forming screws

supplied in the hardware kit, join the front vertical corner channels. To do

so, insert the screws through the clearance holes located within the

rectangular notches and into the mating thread-forming hole. Insert the

screws from either the left or right, depending on how easy it is to access

the holes based on the configuration of the MCC. Either side will join

properly.

NOTE: Replace the plastic covers over the notches after completing step

3. It is important for the plastic covers to be replaced in order to maintain

separation barriers according to IEC 439 Form 4a.

4. Repeat steps 2 and 3 to connect the rear corner channels.

Figure 6: Bolting Sections Together

Joining Corner Channels

Detail A

Detail B

Detail for special sections

only. See note under step 2

above.

8998-98118

8998-98119

8998-3189

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

Section 4—Installing the MCC October 2001

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Fasten each section to the floor (see Figure 7) using 3/4 in. (19 mm) or 1/2

in. (13 mm) grade 5 or higher bolts and flat washers (not included in the

hardware kit). The two 0.88 in. (22 mm) diameter base channel mounting

holes provide clearance for bolt expansion anchors for 1/2 in. (13 mm) bolts.

NOTE: Although the sections are freestanding, floor fastening prevents

movement, thereby preventing conduit connection damage.

Figure 7: Base Channel Mounting

Securing Structures to the Floor

10.00

254

2.50

64 10.00

254

15.00

381

2.50

64 10.00

254

20 Wide x 20 Deep

20 Wide x 15 Deep

Inches

Millimeters

Dual Dimensions:

508 508508 381

8998-9822

Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 Section 4—Installing the MCC

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1. If you are splicing to an existing MCC, remove the end plate and any

gasketing from the existing MCC.

NOTE: If you are splicing to the right of an existing relay section, see

“Splicing Special Sections” on page 18.

2. Remove the white paper backing from the new gasket to expose the

adhesive. This adhesive temporarily holds the gasket in place while you

position the sections.

3. Apply the gasket to the front vertical corner channel with the adhesive

side (see item 2 in Figure 8) toward the new MCC section. Position the

gasket as shown.

4. Verify that the gasket edge is flush with the top of the corner channel.

5. Applying thumb pressure, firmly press the gasket in place from top to

bottom. Verify that the gasket is flat along the entire length.

6. Join sections together by following the steps contained in “Joining IP 20

and IP 52 Sections” on page 14 and continuing through page 16.

Figure 8: Model 6 Export MCC on the Right Splicing to an Existing

Model 6 MCC

Installing Splice Gaskets in IP 52 Enclosures

Splicing Standard Sections

HAZARD OF ELECTRIC SHOCK, BURN, OR

EXPLOSION

• This equipment must be installed and

serviced only by qualified electrical

personnel.

• Turn off all power supplying this equipment

before working on or inside equipment.

• Always use a properly rated voltage sensing

device to confirm power is off.

• Replace all devices, doors, and covers

before turning on power to this equipment.

Failure to follow these instructions will

result in death or serious injury.

DANGER



 D gasket

 Adhesive

 Corner channel





8998-9727

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

Section 4—Installing the MCC October 2001

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For purposes of this instruction bulletin, a special section is an MCC section

that does not have vertical bus. A special section may contain a main device,

a branch device, a starter unit, or a removable relay mounting pan.

To splice an existing MCC to a special section, follow these instructions:

1. Remove the side plate, gasketing, and top and bottom front covers from

the existing MCC.

2. Remove the white paper backing from the new relay gasket to expose the

adhesive. This adhesive temporarily holds the gasket in place while you

position the sections.

3. Apply the gasket to the front right vertical corner channel of the special

section as shown in Figure 9.

4. Verify that the gasket edge is flush with the top of the corner channel and

that the tab is flat on the front of the existing corner channel.

5. Applying thumb pressure, firmly press the gasket in place from top to

bottom. Verify that the gasket is flat along the entire length.

6. Join sections together by following the steps contained in “Joining IP 20

and IP 52 Sections” on page 14 and continuing through page 16.

Figure 9: Special Section Splicing (special section on left)

Splicing Special Sections

8998-9729





 Adhesive

 Special section gasket

 Special section corner

channel

 Tab





Bulletin No. 80446-300-01A Model 6 Export Motor Control Centers

October 2001 Section 4—Installing the MCC

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This section provides instructions for joining IP 24 MCC sections.

1. Remove the right section back plate (see Figure 10).

NOTE: Steps 2 and 3 apply only if you are adding a new section to an

existing MCC lineup. If you are installing a new lineup, skip to step 4.

2. Remove the end deflector cap from the right side of the existing IP 24

section (see Figure 10). Also, remove the mid deflector cap from the

section being added to the right.

3. Remove the end closing plate from the right side of the existing section.

4. Place the structures side-by-side, and join them by following the

instructions contained in “Joining IP 20 and IP 52 Sections” on page 14.

5. Using the additional hardware supplied with the MCC, reattach the back

plate (removed in step 1) to the right section. Attach the right side to the

multi-section bracket (see Figure 10).

6. Install the mid deflector, verifying that both top plate flanges are covered

(see Figure 11).

7. Using the six 10–32 screws supplied, secure the left front vertical channel

of the IP 24 extension to the right front vertical channel of the IP 24

extension (see Figure 12 on page 20).

8. If the lifting angle will be removed from the sections after installation,

replace all hardware in the order shown in Figure 13 on page 20.

Figure 10: Attaching the Multi-Section Bracket

Figure 11: Removing the Mid and End Deflector Caps from the Top of

the MCC

Joining IP 24 Sections

Multi-section back bracket

Right section—back plate

Left section—back plate

Section corner channels

8998-9801

Rear

Front

Mid deflector

End deflector

Lifting angle

8998-3167

Top View

Model 6 Export Motor Control Centers Bulletin No. 80446-300-01A

Section 4—Installing the MCC October 2001

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Figure 12: Securing the Vertical Channels

Figure 13: Replacing the Lifting Angle Hardware

Right section

Left section

10–32 screw

8998-3168

3/8 in. (10 mm) bolt

Steel washer

Seal ring

8998-3169

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Schneider Electric Model 6 Export Motor Control Centers Instruction Sheet

Schneider Electric Model 6 Export Motor Control Centers Instruction Sheet

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