Electrical Testing Equipment

通報

問題一覧

Micro Ohmeter

used to test contact resistance in substation circuit breakers & switches

Service Conductor tester

Placed in meter sockets & apply load to service

TDR

Time Domain Reflectometer

Phasing meter

High-Voltage voltmeter

Voltage Detector

Used for testing a high-voltage line to determine if it’s energized or not

If Voltage Dectector doesn’t sound alarm, there is no voltage present or…

the meter is malfunctioning

Surge Generator is also known as

The Thumper

The digiphone pinpointer is w/

Surge Generator

Ammeter measures

Current

How does the ammeter work

by measuring the strength of the magnetic field around the wire

DC hi-pot

test cables for faults

How does the DC hi-pot react to faulted cables

the needle rises and holds

ARS

Arc Reflection System

What’s and advantage of using the ARS instead of the DC hi-pot

the ARS can detect faults through transformers

Rotation Meter also known as

“Phase Sequence Indicator

The Phase sequence Indicator (rotation meter) is used

before work begins and after work is finished

Insulation Power Factor testers

Detect level of insulation breakdown in substation apparatus

Insulation Power Factors can only be used on De-energized lines

false

Cable locators work by detecting signal (along the length of the cable) placed there by a transmitter

True

Conductive and Inductive tracing is related to..

Cable Locators

testing a line for the presences of voltage before installing protective grounds is a requirement by OSHA

True

Phasing is necessary when

work is being preformed on a junction of the main feeder circuit

Secondary fault locating is usually preformed on..

overhead services

Customer contact is most common when using

Low-Voltage test equipment

Which two functions of the digital multimeter are most commonly used by line workers

AC Voltage & Contuitity

Customer calls with a problem; however, every time service is check, everything is ok. The problem has not gone away and the customer has called several times. What do you next?

install recording voltmeter and recording ammeter

Electrical Systems

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OSHA 2

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