Hioki IR5050 - Overview; Product Overview

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1
Overview
1.1 Product Overview
The IR5050/IR5051 is an insulation resistance tester with a wide measurement
range, for use in such environments involving low to high voltage.
This instrument is designed for measurement of the following:
Purpose: Inspection of high-voltage electrical facilities
Location: High-voltage receiving station or transforming station
Object under measurement: Large motors, transformers, cables, PV panels, etc.
The instrument has the functions and purposes given below.
Measurement functions
Function Purpose Reference
Insulation resistance
measurement
To test the insulation resistance of an electrical facility. p. 41
Voltage measurement To measure the voltage of an external circuit, e.g.,
commercial power supply.
p. 50
PV insulation resistance
measurement (IR5051 only)
To measure the insulation resistance of a PV panel. p. 53
Insulation diagnosis functions
Function Purpose Reference
TIMER Timer test To automatically end the test after a predetermined time. p. 59
PI Polarization index To check whether the insulation resistance increases
with time after a voltage is applied.
p. 61
DAR Dielectric
absorption ratio
SV Step voltage test To determine whether the insulation resistance of an
object under measurement is a󰀨ected by a change in
test voltage.
p. 63
Ramp Ramp voltage test p. 66
DD Dielectric discharge To diagnose a multi-layer insulator. p. 68
1 Overview
HIOKI IR5050A961-00