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Testboy TV 455

TESTBOY TV 450

Table of contents

3

Table of contents

1

Start-up guide .........................................................................................................4

Safety and operational considerations ..............................................................4

Instrument description - Front and connector panel ..........................................5

Instrument description - Meaning of symbols ....................................................5

Function selector switch and instrument display ...............................................7

Battery handling ................................................................................................7

Maintenance......................................................................................................8

Replacing fuses..........................................................................................8

Warranty & Repairs ...........................................................................................9

Quick-test guide ...................................................................................................10

Null the leads...................................................................................................10

Measurements.................................................................................................11

Online Voltage and frequency / Phase sequence - AC Voltage
measurement and frequency measurements, phase sequence ...............11

Insulation resistance - For testing the MΩ value of the insulation between
wires .........................................................................................................13

Low Ω for testing Resistance of earth conductors and equipotential
bonding.....................................................................................................15

RCD testing - 3 functions for testing RCDs. .............................................17

Loop - Fault loop impedance....................................................................19

Line impedance - (phase-neutral, phase-phase)......................................21

Earthing resistance (model TESTBOY TV 450 (Type B)).........................22

Step by step PC SW installation (model TESTBOY TV 450 (Type B)) .........23