Hubbell PSCLBT27 Operation Manual

Page 1

Portable Load Break Tool

Operation Manual

PSCLBT27

Hubbell has a policy of continuous product improvement. Please visit hubbellpowersystems.com to conﬁrm current design speciﬁcations.

Page 2

Table of Contents

Introduction Warnings Ratings Application Features Warranty Safety Procedures Tool Operation Operational Life

3 3 4

4-5

5 5 5

6-7

Page 3

Introduction

The Chance® Load Break Tool was designed with feedback from the Linemen who use the product. The Load Break tool is designed to be 24% lighter, reducing muscle strain and increasing maneuverability of the unit. Additionally, the tool-reset trigger has been redesigned to allow for a simple reset, even if you are wearing thick gloves.

The Chance® Load Break Tool is designed to aid in operation of disconnects, load break switches, capacitor banks, fuse limiters, power fuses, and cutouts. Each tool is manufactured in accordance with a quality system certified to ISO 9001: 2008.

The Chance® Load Break Tool will help cut installation and operation costs as there will be no need for load interrupters on each device. The procedures for switching are designed to reduce

complications and to minimize the duration and scope of outages. The Chance® Load Break Tool complies with OSHA 29 CFR Part 1910.269 (published JAN 1994) and states “Devices used to open circuits under load Conditions shall be designed to interrupt the current involved."

Warnings

CAUTION!

The equipment covered by this instruction guide should be selected, installed and serviced by competent personnel who understand proper safety procedures. This instruction guide is written for such personnel and is not a substitute for adequate training and experience in safety procedures regarding this type of equipment.

This guide does not claim to cover all details or variations in equipment nor to provide for all possible conditions to be met with concerning installation, operation or maintenance of this equipment. If further information is desired or if particular problems are encountered which are not sufﬁciently covered in this guide, contact Hubbell Power Systems, Inc.

CAUTION

The Chance applications that meet the ratings of the tool. The ratings of each tool are noted on a label attached to the tool. If the label is missing or illegible, the tool should be taken out of service.

Follow safe work practices when using this product. Failure to use this product in a safe manner can cause injury or death. Never use this tool in violation of your company safe work procedures.

Load Break Tool is designed for, and must only be used for speciﬁc switching

WARNING

NOTICE

This instruction sheet should be stored with the tool and readily available as a reference document whenever the tool is used. Thoroughly read and understand these instructions completely prior to using the product. If you do not understand any portion of this manual, contact the manufacturer for clarification prior to using the product.

CAUTION

When repairing or reconditioning the Chance® Load Break Tool, only use the appropriate components offered by the manufacturer. Failure to use appropriate components will void the manufacturer's warranty, and may lead to product malfunction, injury or death.

Page 4

Ratings

Chance® Load Break Tool is available in the following rating:

The

PSCLBT27

Voltage Nominal 14.4 / 25 kV - Maximum 27 kV Amperage Nominal 600A - Maximum 900A

Application

The Chance® Load Break Tool is suitable for live-switching duties of single or three phase overhead distribution circuits up to 27kV and underground distribution circuits up to 25 kV. It must be used with appropriately designed equipment with “load break hooks.” Such equipment includes disconnect switches, cutouts, power fuses, fuse limiters, and pad mounted switch gear.

•

Transformer switching - transformer load currents up to 600 amperes nominal, 900 amperes

maximum, as well as transformer magnetizing currents associated with the applicable loads.

•

Line switching - load splitting (parallel or loop switching) and load dropping of currents up to

600 amperes nominal, 900 amperes maximum; also line dropping (charging currents for distribution systems of these voltage ratings).

•

Cable switching - load splitting (parallel or loop switching) and load dropping of currents up to

600 amperes nominal, 900 amperes maximum; also cable dropping (charging currents typical for distribution systems of these voltage ratings).

• Capacitor bank switching - switching of single capacitor banks as follows:

typical

Maximum Capacitor Bank Rating, kVAC, Three Phase

Catalog Number

PSCLBT27

* Tools must not be used for switching parallel (“back-to-back”) capacitor banks. # Tools must not be used for switching ungrounded-wye connected banks or grounded-

wye connected banks on ungrounded systems where maximum system operating voltage exceeds 18 kV for Catalog Number

Nominal System

Voltage, kV,

Three-Phase

12 thru 14.4

20.8 thru 23.9

24.9 and 26

Solid or Effectively Grounded System Ungrounded System

Single* Banks,

Grounded-Wye

Connected

1800 2400 3000 3600

PSCLBT27

Single* Banks,

Ungrounded-Wye

Connected

1800

2400

# #

Single* Banks,

Grounded or

Ungrounded-Wye

Connected

1800

2400

# #

Page 5

Application

A Note on Single-Pole Switching

In single-pole switching of ungrounded-primary three-phase transformers or banks (or single-phase transformers connected line-to-line), circuit connections or parameters may, in some cases, produce excessive over voltages. In particular, for the following applications above 22 kV, single-pole switching by any means including The Chance® Load Break Tool should be performed only under the conditions stated in italics:

•

Switching unloaded or lightly loaded delta-connected or ungrounded-primary wye-wye connected three-phase tr kVA or less three-phase, or 50 kVA or less single phase or of any kVA rating when combined with unloaded cables or lines where maximum system operating voltage exceeds 22 kV.

Single-pole switching should be performed only if each phase is carrying 5% load or more, or if the transformer or bank is temporarily grounded at the primary neutral during switching.

•

Switching loaded or unloaded ungrounded-primary wye-delta connected three-phase transformers or banks alone or combined with unloaded cables or lines where maximum system operating voltage exceeds 22 kV.

Single-pole switching should be performed only if each phase is carrying 5% load or more and if the lighting-load phase is always switched open ﬁrst (or switched closed last); or if the transformer or bank is tempor

ansformers or banks (or line-to-line connected single-phase transformers), rated 150

arily grounded at the primary neutral during switching.

Features

• Reset Paddle will not pinch ﬁngers

• Maximum tool movement

• Full operational ratings

•

No exposed springs to pinch linemen's gloves

• Reset Paddle is easy to use with gloves

•

Operation counter

Warranty

The Chance® Load Break Tool carries a full (1) one year warranty on workmanship, parts and labor against normal wear and tear from the original date of purchase. The tool is NOT warranted against misuse or misapplication.

Safety Procedure

Follow all basic and necessary procedures to secure the electrical site before beginning work. Wear proper safety equipment and follow all existing codes, requirements and instructions for all

equipment used in conjunction with the Chance® Load Break Tool. Misuse of this tool can cause serious Only trained and qualified personnel should operate, inspect and maintain this device. Do not use this tool on applications where the maximum system voltage exceeds the maximum design voltage rating of the tool. Likewise, do not use a tool that is “over-rated” for the application voltage. When you receive your Chance® Load Break Tool familiarize yourself with all operational features prior to

use. It is also recommended that the user practice using the tool on de-energized equipment to gain familiarity with proper operation and handling of the tool.

injury or death. Fully read and understand the instruction manual before using this product.

Page 6

Tool Operation

It is critical that the Chance® Load Break Tool be inspected both visually and mechanically prior to operation. To perform the inspection, the following steps must be performed:

1. Check the black top ring to verify that it is fully seated and has not loosened.

2. Inspect any external moving components for full mechanical functionality.

3. To ensure proper mechanical spring operation, extend the yellow tube no more than 3 inches and verify that the spring force retracts the yellow tube to its initial closed position. If the tool fails to retract back to the initial closed position, it will be necessary to disassemble and properly service the tool prior to use.

To perform full mechanical operation on the Chance® Load Break Tool, extend the yellow tube until the tool locks out into the open locked position. To release from the open locked position and retract the tool back to the closed position, press the large orange paddle on the side of the tool. Once pressed, the yellow tube will automatically retract back to the initial closed position. If this does not occur, disassemble and properly service the tool prior to use.

Inspect all exterior surfaces of the Chance® Load Break Tool to verify the surfaces are clean and free of damage.

2. For optimal functionality, it is necessary to determine the best location to approach the cutout or switch intended for operation.

• The operator should determine a standing location that allows full control of the tool without resulting in a loss of footing during operation.

•

For optimal hand control of the Chance® Load Break Tool, the operator should always

approach the cutout or switch from below on the side of the pole with the least congestion to minimize the chance of contact with other pole equipment.

• The operator should choose a location that allows an operation angle of 45° below horizontal, directed straight out from the cutout or switch.

• Never choose a location that places the tool on the same side of the cutout or switch as the operator (see Figure 1). It is necessary for the user to connect the

Tool on the opposite side of the cutout or switch from their position below (See Figure 2).

Chance® Load Break

Figure 1 - Incorrect Approach Figure 2 - Correct Approach

Page 7

Tool Operation

3. Once a suitable location has been determined that allows the user to safely operate the Chance Load Break Tool, it is necessary to connect the tool to the arcing horns of the cutout or switch.

To connect the Chance® Load Break Tool to the cutout or switch, install the hook loop onto the arcing horns.

To connect the cutout or switch pull ring to the Chance® Load Break Tool, maneuver the

tool in an angular motion that allows the spring loaded clip assembly to engage the pull ring and lock securely. It may be necessary to extend the Chance® Load Break accomplish connection.

Operating the cutout or switch with the Chance® Load Break Tool.

•

Firmly pull the tool downward at the 45° angle, straight out from the cutout or switch. Once the load disconnect the fuse electrically from the power system.

• The speed at which the user pulls the cutout or switch will not have an impact on the functionality of the tool. The user should choose a speed of operation that allows them to have full control over the tool at all times.

Removal of the Chance® Load Break Tool from the cutout or switch.

1. Once the cutout or switch has been opened, ﬁrm contact between the hook loop and the arcing horns should be maintained by exerting a small amount of downward pressure on the tool.

Disengage the Chance® Load Break Tool by rotating or rolling the tool in a manner that

2. allows the clip assembly to disengage the pull ring on the fuse.

break tool has reached the fully open position it will lockout and safely

Tool slightly to

Move the tool slightly back toward the cutout or switch and allow the hook loop to come off the load break ears.

Preparing the tool for next operation.

• Push the hand paddle to reset the tool to the closed position.

•

Repeat steps

1 through 5 as necessary.

Operational Life

With normal usage, the Chance® Load Break Tool can be expected to reach 1,500-2,000 operations between required inspection and maintenance. However, users should not rely solely on the counter to determine maintenance scheduling and operational life. Tool life is not strictly dependent on number of uses, rather it is dependent on the size of the load that is broken. Breaking a larger electrical load will result in more tool degradation than a smaller load. The conditions in which the tools is stored will also affect the operational life. Given the usage and storage variables 1,500-2,000 operations between inspections is only a benchmark. We recommend that each utility or contractor

establish a 6 to 12 month inspection and maintenance schedule. This will help to support the best operational life of the equipment.

Page 8

PSCLBT27 Chance® Load Break Tool

Voltage -

Amperage - Nominal 600A - Maximum 900A

Hook Loop

Sping Loaded Clip Assembly

Nominal 14.4 / 25 kV - Maximum 27 kV

Reset Paddle

Universal Adapter

Operation Counter

Hubbell Power Systems, Inc.

210 N. Allen Street

Centralia, MO 65240

(573) 682-5221

www.hubbellpowersystems.com

Hubbell has a policy of continuous product improvement. Please visit hubbellpowersystems.com to conﬁrm current design speciﬁcations.

TD_09_070_E