CHANCE H1876 Manuel utilisateur

CHANCE® Analog Phasing Meters

Hubbell has a policy of continuous product improvement.

Please visit hubbellpowersystems.com to conﬁrm current design speciﬁcations.

Revision A

07/22

Owner's Manual

Model No. H1876, H18761, H18767,

C4030457, C4030458

NOTICE: Before operating a

CHANCE® Phasing Meter, thoroughly

read, understand and follow these

instructions. Keep these instructions

with product for future reference.

Guide to Warnings within Manual

The following is a list of warnings used within this manual and should be read in their entirety

to ensure safe practices.

A DANGER refers to operating procedures, techniques, etc., that, if not followed carefully,

could RESULT IN DEATH.

A WARNING refers to operating procedures, techniques, etc., that, if not followed carefully,

could RESULT IN INJURIES OR DEATH.

A CAUTION refers to operating procedures, techniques, etc., that, if not followed carefully,

could RESULT IN DAMAGE TO EQUIPMENT or LOSS OF SERVICE to customers.

A NOTICE refers to information that is considered important but not hazard related.

!DANGER

!WARNING

!CAUTION

NOTICE

Product Safety

CORRECT USE

INCORRECT USE

Do not allow the universal coupling or housing to become grounded in any way, or to

contact another phase, as this will cause erroneous voltage indication and could cause

severe personal injury or damage to equipment.

When used on higher voltages, observe additional working clearance for the increased

voltage from hands to line parts. Including Epoxiglas™ resistor housings, universal ﬁttings,

meter, and cable.

Always use with an appropriate length insulated hotstick even when wearing rubber

gloves. Contact with the universal coupling or other parts, even with rubber gloves, will

cause erroneous voltage indication. Do not engrave on stick.

Before and after each use, always test the unit on a known energized voltage source or

with an appropriate Voltage Indicator Tester.

Minimum Approach Distances (MAD) should be adhered to at all times. For the latest

information and charts refer to the ocial OSHA website: https://www.osha.gov

The equipment covered in this manual must be used and serviced only by competently

trained personnel familiar with and following approved work and safety practices. This

equipment is for use by such personnel and this manual is not intended as a substitute for

adequate training and experience in safe procedures for this type of equipment.

These instructions neither cover all details or situations in equipment use, nor do they

provide for every possible contingency to be encountered in relation to installation,

operation, or maintenance. Should additional information and details be desired or if

situations arise which are not covered adequately for the user’s purpose, the speciﬁcs

should be referred to Hubbell Power Systems.

!WARNING

!DANGER

!WARNING

Generic Components of the Phasing Meter

Meter

Cable Reel

Pigtail Hook

Shepherd's Hook

Universal Couplings

Resistor Stick

Test Point

Function and Design Overview

The CHANCE®Phasing Meters are portable devices which permit the checking of AC voltages

on distribution and transmission circuits from 1 kV to 161 kV for the purpose of determining

phase relationships and the approximate voltage line-to-line or line-to-ground of the circuits.

When used above 15 kV, extra caution is required to maintain working clearance for the

higher voltage.

The basic instrument, Model No. H18761, is designed for voltages up to 16 kV read directly on

the analog scale of the meter. High impedance resistance units are encapsulated to protect

them from mechanical damage and to prevent moisture penetration or accumulation around

the resistors. The remainder of the handle is foam filled to prevent moisture accumulation.

Between the two resistor units there is a milliammeter and a connecting cable with 15 kV

insulation. The resistors limit current values to less than 1.25 milliamperes at maximum voltage

rating across the probes. Capacitive current to ground through the cable insulation

depends upon area of ground contact. For example, a 4-inch contact pad induced a capacitive

current of less than 40 micro-amperes (0.04 milliamperes) at full voltage. This is below

perception levels. Current to ground resulting from cable insulation failure or damage is limited

to less than 1.5 milliamperes by the resistors.

Extension Resistor Sticks are available to increase the voltage range above the instrument's

base voltage. The Extension Resistor Sticks are installed with one on the meter stick and

one on the reel stick. When installed, the scale of the meter will be changed by a factor

determined by which Extension Resistors are used. The space surrounding these resistors is

also encapsulated for mechanical and moisture protection.

For voltages above 16 kV up to 48 kV, add one pair of H18764 Extension Resistors. For

voltages from 48 kV to 80 kV, add one pair of H18762 Extension Resistors. An alternative

application for voltages from 48 kV to 80 kV is to use two pairs of H18764 Extension Resistors,

installed with two on the meter stick and two on the reel stick. NOTE: Extension Resistors are

only for use on 16 kV maximum Phasing Meters.

Extension Resistors

Overhead Operation

The Phasing Meter is equipped with a cable reel on which the cable between the two housings

is stored.

During high voltage testing, only use the length of cable necessary to permit the contacts

to reach between the points of measurement. Any remaining cable length should be kept

wound on the reel.

There are two reasons for this:

1. Cable insulation is limited to 15 kV for light weight and ease of handling. This is adequate

for momentary contact with ground of 15 kV conductors but damaged insulation may

result in an uncomfortable shock if personal contact is made at a damaged area. At higher

voltages, insulation puncture may result. KEEP CABLES FROM CONTACT WITH OTHER

MATERIAL OR PERSONNEL.

2. Meter indications will be aected and error introduced by the capacitance to ground

between the cable and grounded structure, moist concrete, or the earth. Other conductors

will also inﬂuence meter indications if the cable is allowed to touch or come in close

proximity to these conductors. RESISTOR ENCLOSURE PORTION CAN PUNCTURE ABOVE

40 kV. KEEP THIS PORTION CLEAR OF CONDUCTORS, STRUCTURES, AND GROUNDS.

This tool is not intended for continuous contact application. Tests at full voltage for 30

minutes produced no damage, although heating of resistors did occur. Contact should be

limited to the time required to note the meter indication.

To measure line-to-ground voltage, the section on which the meter is mounted should

preferably be used at the ground potential contact to minimize stray capacitance influence on

the meter. On line-to-line measurements, contact is made to each phase conductor keeping

connecting cable away from other conductors, grounded or metal structures, and

isolated from contact with platforms or each contact. As noted before, this is to avoid

influence which may distort meter indications.

In tying two energized 3-phase feeders together where it is necessary to match phases,

voltage measurements must be made between a conductor of one circuit and each of

the conductors of the second circuit. This procedure is followed for each phase to avoid

connecting phases in reversed rotation. Re-check the third phase just before making the final

connection to assure proper phase relationship. With matched phases one may expect the

voltage indication to be near zero. More often a voltage will be indicated due to phase shift at

the open point in remotely energized circuits and/or unequal voltage drop. Proper connections

can readily be determined by the meter indications. Preliminary phase-to-phase measurements

of each circuit are recommended to determine that proper voltages are being connected.

In substations, bus and switchgear cubicles, or other crowded areas where electrical ﬁelds

are of greater intensity, extra precaution is recommended to avoid disturbing inﬂuences

aecting meter indications.

!CAUTION

Underground Operation

When using the Phasing Meter on underground systems, the same basic rules and procedures

apply as with overhead, for example, maintaining proper working clearances to all parts of

the tool, keeping tool clean and dry, keeping cable from contacting energized or grounded

surfaces, etc. However, there are some additional considerations when using the tool on

underground equipment.

1. When testing dead-front URD equipment, use an appropriate Bushing Adapter on the

Bushing Well. On Capacitive Test Points, use the Straight Probe. Never use the Shepherd

Hook on URD equipment.

2. Use extreme caution when testing live-front URD equipment. Use applicable safe work

practices and procedures. Do not use any Probe or Bushing Adapters on the Phasing

Meter when testing live-front URD equipment. Only use a small hex head machine screw

(1/4-20 X 3/8"long).

!DANGER

H18761

16 kV

H1879

16 kV

NOTE:

With no extensions, scale is direct reading.

With one PAIR of H18764 extension multiply by 3.

With two PAIRs of H18764 extension multiply by 5.

Dials of Individual Models

T4030786

1 & 16 kV

T4032311

5 & 16 kV

T4032261

25 kV

H18767

40 kV

E4030498

120 kV

NOTE:

Multiply by 10

E4030499

161 kV

DC Hi-Pot Adapters

C4031762

Up to 16 kV

C4031763

Up to 35 kV

Elbow Adapters

T4030856

Up to 35 kV

Bushing Adapters

T4030428

Up to 15 kV

T4030857

Up to 35 kV

Extensions

H18764

48 kV Extension

Use ONLY with 16 kV models

H18762

80 kV Extension

Use ONLY with 16 kV models

Ce manuel convient aux modèles suivants

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