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Kewtech KT72 User Manual
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27
T
he
s
t
ra
p
an
d
te
s
t
l
e
a
d
c
a
se
c
a
n
b
e
a
t
t
ac
h
e
d
t
o
t
h
e
i
n
s
tr
u
m
en
t
as
below.
Pass
the
strap
belt
down
through
the
side
panel
of
the
main
body
from
the
top,
and
up
through
the
slots
of
the
test
lead
case
from
the
bottom.
(Fig. 16).
P
a
s
s
t
h
e
s
t
r
a
p
t
h
r
o
u
g
h
t
h
e
b
u
c
k
l
e
,
a
d
j
u
s
t
t
h
e
s
t
r
a
p
f
o
r
l
e
n
g
t
h
a
n
d
secure.
Use
a
very
slightly
damp
cloth
for
cleaning
the
instrument.
Do
not
use
abrasives or
solvents.
8.
Case and
strap
assembly
9. Maintenance
Fig.16
27
29
Table of Contents
Safe Testing
2
Procedure of Removing Cover
4
Method of Removing the Cover
4
Method of Storing the Cover
4
Product Summary
5
Test Functions
6
Features
6
Instrument Layout
7
Front View
7
End View
7
Test Socket
7
Function Switch
8
Terminal for Extension Lead Adapto
8
PE / Class II Insulation Probe
8
Explanation for Indications
9
LCD Display
9
List of Display Message
10
Applicable Standards
10
Instrument Operation
10
Specification
11
Measurement of Insulation Resistance - RINS
11
Measurement of Substitute Leakage Current Test - LEAK
11
Threshold and Display
11
Reference Test Condition
13
Operating Temperature and Humidity Range
13
Storage Temperature and Humidity Range
13
Power Supply
13
Visual Inspection
14
Battery Voltage Check
14
Null Setting
14
Null Setting for Class I Test
15
Display at Null Setting
15
Null Setting for Extension Lead Test
16
Voltage Setting for Insulation Resistance Measurement
16
Class I Test (200Ma Earth Bond Test)
17
Class I Test Flowchart
18
Class Ll Test
20
Class Il Test Flowchart
21
Measuring Method
21
Extension Leads Test
23
Extension Leads Test Flowchart
24
Battery Replacement
26
Fuse Replacement
26
Battery and Fuse Replacement
27
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Kewtech KT72 Specifications
General
Brand
Kewtech
Model
KT72
Category
Test Equipment
Language
English
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