Cutler-Hammer E2 L Bedienungsanleitung

I.L. 29C171

Effective March 1998.

Cutler-Hammer

Installation Instructions for Undervoltage Release

Mechanism (Handle Reset) with LED for E2L and E2LM

Mining Circuit Breakers

CONTACT WITH ENERGIZED EQUIPMENT CAN

RESULT IN DEATH, SEVERE PERSONAL INJURY,

OR SUBSTANTIAL PROPERTY DAMAGE. DO NOT

ATTEMPT TO INSTALL OR PERFORM MAINTE-

NANCE ON EQUIPMENT WHILE IT IS ENERGIZED.

ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT

BEFORE PROCEEDING WITH THE TASK, AND

ALWAYS FOLLOW GENERALLY ACCEPTED SAFE-

TY PROCEDURES.

CUTLER-HAMMER IS NOT LIABLE FOR THE MISAP-

PLICATION OR MISINSTALLATION OF ITS PROD-

UCTS.

The user is cautioned to observe all recommendations,

warnings, and cautions relating to the safety of person-

nel and equipment as well as all general and local

health and safety laws, codes, and procedures.

WARNING The recommendations and information contained herein

are based on Cutler-Hammer experience and judge-

ment, but should not be considered to be all-inclusive or

covering every application or circumstance which may

arise. If any questions arise, contact Cutler-Hammer for

further information or instruction.

1.0 INTRODUCTION

General Information

The undervoltage release mechanism (UVR) (Figure 1-

1) monitors a voltage (typically a line voltage and trips

the circuit breaker when the voltage falls to between 70

and 35 percent of the solenoid coil rating. The UVR

consists of a continuous rated solenoid with a plunger

and reset lever assembled to a plug-in module. The

plug-in module is mounted in slots in the top of the trip

unit and occupies the accessory cavity in the circuit

breaker frame. The reset lever resets the UVR when

normal voltage is restored and the circuit breaker handle

is moved to the resets (extreme OFF) position. With no

voltage applied to the UVR, the circuit breaker contacts

will not touch when a closing operation is attempted.

The UVR is available for 120 VAC. Table 1.1 lists appli-

cations and electrical ratings data for the UVR.

For this publication, the term circuit breaker shall also

include molded case switch and motor circuit protector.

Depending on the model ordered, connections for the

UVR are in one of four forms. The standard wiring con-

figuration is pigtail leads exiting the rear of the base

directly behind the UVR. Optional configurations

include a terminal block mounted on the same side of

the base as the accessory, leads exiting the side of the

base where the accessory is mounted, and leads exiting

the rear of the base on the side opposite the accessory.

The 18-inch long pigtail leads are color coded for identi-

fication; identification labels are provided for pigtail

leads and terminal block points.

This instruction leaflet (IL) gives detailed procedures for

installing the UVR.

Figure 1-1 Undervoltage Release Mechanism (Handle

Reset) with LED installed in L-Frame Mining Circuit Breaker

I.L. 29C171

Page 2

Effective 3/98

2.0 INSTALLATION

The UVR can be field-installed in E2L and E2LM min-

ing circuit breakers.

Before attempting to install the UVR, check that the

catalog number is correct as ordered.

The UVR, shown in kit form in Figure 2-1, is installed in

the left accessory mounting cavity of a 3-pole circuit

breaker. A UVR must be installed in the circuit breaker

before the circuit breaker is mounted in an electrical

system. To install the UVR, perform the following pro-

cedures:

A circuit breaker that is mounted in an electrical

system must be removed to install the accessory.

To ensure correct accessory installation, the circuit

breaker must be placed on a horizontal surface.

THE VOLTAGES IN ENERGIZED EQUIPMENT CAN

CAUSE DEATH OR SEVERE PERSONAL INJURY.

SPECIAL ATTENTION SHOULD BE PAID TO

REVERSE FEED APPLICATIONS TO ENSURE NO

VOLTAGE IS PRESENT. BEFORE REMOVING A

CIRCUIT BREAKER INSTALLED INA N ELECTRICAL

SYSTEM, MAKE SURE THE CIRCUIT BREAKER IS

SWITCHED TO THE OFF POSITION AND THERE IS

NO VOLTAGE PRESENT WHERE WORK IS TO BE

PERFORMED.

For new circuit breaker installation, the trip unit

must be installed in circuit breaker before attempt-

ing to install a UVR. Refer to I.L. 29C607, I.L.

29C608, I.L. 29C609 or I.L. 29C610 for instructions

on how to install trip unit.

2-1. Switch circuit breaker to OFF position.

Figure 2-1 Undervoltage Release Mechanism (Handle

Reset) Kit Figure 2-2 Trip Unit Barrier Removal

NOTICE

WARNING

NOTICE

Accessory

Identification

Label

MINING

UVR CAT UVM4PO8K

STYLE 1483D42G01

FREQ

VOLTS

50/60 Hz

120

2.4

Connection Diagram

Label (Pigtail

Leads Shown)

UV-1 UV-2

Replacement

Interphase

Barrier

Intermediate

Plunger

UVR Plug-in

Module (With

Pigtail Leads)

Intermediate

Plunger

Recessed

Hole

Trip

Unit

Trip

Unit

Barrier

I.L. 29C171 Page 3

Effective 3/98

To install UVR, circuit breaker operating mechanism

must be in tripped position.

Molded case switch trip units are not equipped with a

Push-to-Trip button. For molded case switches, omit

step 2-3.

2-2. Disconnect and remove circuit breaker from instal-

lation and terminal connections.

2-3. Press PUSH-TO-TRIP button to trip operating

mechanism, and check handle moves to trip posi-

tion with white colored indicator visible in

escutcheon window.

2-4. Remove circuit breaker cover screws and covers.

2-5. For high instantaneous trip-type (catalog suffix K

designation) molded case switches, find recessed

hole in either of the trip unit outer poles (Figure 2-

2). Push intermediate plunger supplied with UVR

in one hole to trip the molded case switch.

Remove plunger to prevent it falling out of

recessed hole in trip unit and into molded case

switch mechanism.

2-6. Remove interphase barrier between accessory

mounting cavity and operating mechanism (see

Figure 2-3).

2-7. Install replacement interphase barrier (supplied

with kit) in base (see Figure 2-3).

2-8. Install UVR as described in following steps (see

Figure 2-4).

IF UVR IS REMOVED FROM CIRCUIT BREAKER,

INTERMEDIATE PLUNGER MUST ALSO BE

REMOVED. FAILURE TO REMOVE THE INTERMEDI-

ATE PLUNGER CAN RESULT IN EQUIPMENT DAM-

AGE.

a. Remove barrier from trip unit accessory mounting

slots in pole bing used for accessory (Figure 2-2).

b. Position intermediate plunger in trip unit (Figure 2-

2).

c. Press intermediate plunger into recess in trip unit

and hold in position.

NOTICE

Figure 2-3 Interphase Barrier Replacement

Figure 2-4 UVR Installation

WARNING

Remove

Interphase

Barrier

Replacement Barrier

Supplied with UVR

Switch Kit

UVR Plug-in

Module

UVR Reset Lever in

Slot in Interphase

Barrier in Front of

Handle Arm

Interphase

Barrier

I.L. 29C171

Page 4

Effective 3/98

d. Push circuit breaker handle towards the ON position

and hold while sliding UVR plug-in module into slots

in trip unit (Figure 2-4) until retaining clip snaps into

trip unit. For terminal block assemblies, slide termi-

nal block into mounting slot on side of base as plug-

in module is being positioned.

For a UVR having rear or opposite-side exiting pig-

tail leads, thread leads through in side of base

before attempting to insert the mounting bracket.

Pigtail leads exiting in this manner should be eased

through trough as mounting bracket is inserted into

trip unit retaining slots. Use center trough also for

leads exiting the side of the circuit breaker.

LEADS SHOULD BE FORMED AND ROUTED TO

CLEAR ALL MOVING PARTS WHEN ACCESSORY IS

PROPERLY INSTALLED. PIGTAIL WIRES COULD

BE DAMAGED IF IN CONTACT WITH MOVING

PARTS.

2-9. Route wiring to meet installation requirements

(Figure 2-5). If required, complete routing of leads

of opposite side through rear wiring trough.

FAILURE TO KEEP FINGERS AWAY FROM MOVING

PARTS CAN CAUSE PERSONAL INJURY. WHEN

CHECKING ACCESSORY, DO NOT PUT FINGERS

NEAR MOVING PARTS INSIDE CIRCUIT BREAKER

CASE. SPRINGS CAUSE INTERNAL PARTS TO

MOVE QUICKLY AND WITH FORCE.

2-10. Perform mechanical check of UVR after installa-

tion:

a. WIth the circuit breaker still electrically isolated,

reset the circuit breaker.

b. Mechanical check. Using a small flat-blade screw-

driver, (Figure 2-6), push in and hold solenoid

plunger. Switch circuit breaker to ON. Release

solenoid plunger and check that circuit breaker trips.

c. Reset circuit breaker handle and check that handle

arm moves reset lever to reset the solenoid plunger.

d. If mechanical check does not trip circuit breaker,

see if UVR and intermediate plunger are correctly

installed. If UVR and intermediate plunger are cor-

NOTICE

Figure 2-5 Accessory WIring Options

Figure 2-6 Screwdriver Depressing Undervoltage

Release Mechanism Solenoid Plunger

Rear Exiting Leads

(Preferred) Terminal Block

Side Exiting Leads Opposite-Side

Exiting Leads

Solenoid

Plunger

Flatblade

Screwdriver

WARNING

I.L. 29C171 Page 5

Effective 3/98

rectly installed. If UVR and intermediate plunger appear

to be properly installed and problem persists, contact

Cutler-Hammer.

WHEN INSTALLING CIRCUIT BREAKER MAIN

COVER, MAKE SURE THAT ALL INTERNAL PARTS

ARE IN PLACE:

·SLIDING HANDLE BARRIER IS POSITIONED SO

THAT THE HANDLE OPENING IS ALIGNED WITH

THE HANDLE.

·ALL LEADS ARE CLEAR OF THE COVER.

2--11.With circuit breaker handle in the TRIPPED posi-

tion and accessory pigtail leads (if used) routed as

required, install circuit breaker covers. Secure

with pan-head screws. Torque to 20-22 lb-in.

(2.26-2.49 N.m.)

2-12. Remove and discard UL listing label on LDB cir-

cuit breakers only.

2-13. Place accessory labels (supplied with kit) on cir-

cuit breaker (see Figure 2-7).

2-14. Where practical and after taking all necessary

safety precautions, apply rated voltage to UVR.

Reset and close circuit breaker. Confirm that cir-

cuit breaker trips when voltage is removed.

2-15. Install circuit breaker.

Accessory labels show connection diagram for UVR

contacts. Pigtail leads are color coded orange and

brown.

2-16. Connect UVR as required (see Figure 2-8).

Cutler-Hammer assumes no responsibility for malfunc-

tioning accessories installed improperly by the cus-

tomer.

CAUTION

NOTICE

Figure 2-7 Preferred Mounting Locations for Accessory

Nameplate Labels

Figure 2-8 Undervoltage Release Mechanism (Handle

Reset) Connection Diagram

Terminal Block

Connection Diagram

Label (When Used) Modification

Label

Accessory

Identification

Label Pigtail

Connection

Diagram

(When Used)

Overcurrent Protection

(Supplied by Customer

When Required)

Overcurrent Protection

(Supplied by Customer

When Required)

Monitored

Voltage Monitored

Voltage

Orange

Brown

UV1

UV2

UVR

Pigtail Leads Terminal Block

I.L. 29C171

Page 6

Effective 3/98

Application Electrical Operating Ratings Approximate Operating Time (ms)

Ratings

Voltage Supply Dropout Pickup VA Min.➁Initiation➂Maximum Dielectric➃

(V) Voltage Voltage (V) Voltage (V) UVR Circuit Circuit Withstand

(V) Min. Min. Max. Response Breaker Breaker Voltage (V)

Contact Contact

Separation Opening

120 120 44.5 77 93.5 2.1 5 15 25 1500

Table 1.1 AC (50/60 Hz) Undervoltage Release Mechanism (Handle Reset) Ratings ➀

➀Endurance – 400 electrical operations plus 5600 mechanical operations

➁UVR will override a momentary voltage dip up to the response time shown

➂Unlatching occurs 1 millisecond before circuit breaker contacts begin to separate

➃For 1 minute

I.L. 29C171 Page 7

Effective 3/98

Cutler-Hammer

Five Parkway Center

Pittsburgh, PA 15220

Effective 3/98 (ISI)

Style 6603C60H01

Printed in U.S.A.

Page 8 I.L. 29C171

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