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Cutler-Hammer E2 L Installation Instructions Manual

Undervoltage release mechanism (handle reset) with led for e2 l and e2 lm mining circuit breakers

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Cutler-Hammer
Installation Instructions for Undervoltage Release
Mechanism (Handle Reset) with LED for E
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.
Figure 1-1 Undervoltage Release Mechanism (Handle
Reset) with LED installed in L-Frame Mining Circuit Breaker
Effective March 1998.
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.
I.L. 29C171
2
2
L and E
LM

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Summary of Contents for Cutler-Hammer E2 L

  • Page 1 CONTACT WITH ENERGIZED EQUIPMENT CAN covering every application or circumstance which may RESULT IN DEATH, SEVERE PERSONAL INJURY, arise. If any questions arise, contact Cutler-Hammer for OR SUBSTANTIAL PROPERTY DAMAGE. DO NOT further information or instruction. ATTEMPT TO INSTALL OR PERFORM MAINTE- NANCE ON EQUIPMENT WHILE IT IS ENERGIZED.
  • Page 2: Installation

    I.L. 29C171 Page 2 UVR Plug-in Intermediate Module (With Plunger Pigtail Leads) Replacement Interphase Barrier Intermediate Plunger MINING UVM4PO8K STYLE 1483D42G01 FREQ 50/60 Hz VOLTS UV-1 UV-2 Trip Unit Accessory Trip Connection Diagram Barrier Recessed Identification Unit Label (Pigtail Hole Label Leads Shown) Figure 2-2 Trip Unit Barrier Removal...
  • Page 3 I.L. 29C171 Page 3 NOTICE To install UVR, circuit breaker operating mechanism must be in tripped position. Replacement Barrier Supplied with UVR Molded case switch trip units are not equipped with a Switch Kit Push-to-Trip button. For molded case switches, omit step 2-3.
  • Page 4 I.L. 29C171 Page 4 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.
  • Page 5 Accessory labels show connection diagram for UVR contacts. Pigtail leads are color coded orange and Brown brown. 2-16. Connect UVR as required (see Figure 2-8). Cutler-Hammer assumes no responsibility for malfunc- Overcurrent Protection (Supplied by Customer tioning accessories installed improperly by the cus- When Required) tomer.
  • Page 6 I.L. 29C171 Page 6 Table 1.1 AC (50/60 Hz) Undervoltage Release Mechanism (Handle Reset) Ratings Application Electrical Operating Ratings Approximate Operating Time (ms) Ratings Voltage Supply Dropout Pickup Min. Initiation Maximum Dielectric Voltage Voltage (V) Voltage (V) Circuit Circuit Withstand Min.
  • Page 7 I.L. 29C171 Page 7 Effective 3/98...
  • Page 8 I.L. 29C171 Page 8 Cutler-Hammer Five Parkway Center Pittsburgh, PA 15220 Effective 3/98 (ISI) Style 6603C60H01 Printed in U.S.A.

This manual is also suitable for:

E2 lm