Benetech GT5307B User manual

Version: 5307B-EN-02
INSULATION/CONTINUITY TESTER
Instruction Manual
MODEL: GT5307B
GT5307B
CON TIN UITY
AC. V
HOLD/
PRESS TO T EST
LOCK
<600V
A
1
2
3
4
5
6
A
DOCUMENT NO.: QR-208/A
B C D E
BCD E
1
2
3
4
5
6
SCALE
SIZE
DATENAME
APPROVALS
APP. BY
CUSTOMTER
DRAWN BY
CHECKED BY
A4
更 改 记 录
次 号
1.
2. 修 改 执 行 标 准 2021-04-14
3.
VER.A2
SHEET OF
PART Number: 1 1
GT5307B (BENETECH) 英 文 有 唛说明书示意 图
日 期
更 改 内 容
7163112002
GAP
2020.04.20
SHENZHEN JUMAOYUAN SCIENCE AND TECHNOLOGY CO., LTD.
Standard: Q/GMY 027—2020

Insulation Continuity Tester----------------------1pcs
1.5V AA battery ---------------------------------------6pcs
Test lead ------------------------------------------------2pcs
Crocodile clip----------------------------------------- 2pcs
User's manual-----------------------------------------1pcs
Strap-----------------------------------------------------1pcs
Cloth bag -----------------------------------------------1pcs
1. Notice use before
Check-up
Carefully unpack your kit and ensure that you have the following
items. In case that any items is missing or if you find any mismatch
or damage, promptly contact your dealer.
-01-
measurement----------------------------------------(11)
2．Operation Instructions
1. Notice use before
CONTENTS
Check-up--------------------------------- ---(01)
Safety warning ---------------- ------ ------(02)
Feature and function------------------------------(05)
Diagram of the unit --------------------------------(06)
Specifications --------------------------------------(08)
LCD display ---------------------------------------- (10)
--------
------ ---
3. Other items
Attentions ------------------------------------------(16)
Maintenance and warranty-------------------(17)

-02-
Safety warning
In order to use this instrument correctly, please read this manual
carefully before use. This manual contains warning information
and safety regulations. When using this instrument, please strictly
observe it to ensure operation safety of users and the instrument.
Note:
1. Before using this instrument, please read and understand
contents included in this manual.
2. The instrument must be used in strict accordance with test
procedures described in this manual.
3. Be sure to understand the safety aspects in this manual in detail.
4. This instrument must be operated by qualified and qualified
technician, and use under conditions specified in this manual.
5. The company is not responsible for equipment damage caused
by improper use or violation of safety operation regulations of this
manual.
The safety symbol “ ” has three implications in this manual. Users
should pay special attention to operation with " " symbol during
reading.
-03-
DANGER—To avoid serious or fatal damage that may be caused by
operation under certain conditions.
WARNING—To avoid danger of electric shock.
CAUTION—To avoid damage to the instrument and make
accurate measurements.
DANGER
●Never measure current circuit above 600V AC.
●Do not test in flammable environment. Sparks may cause explosion.
●If the surface of the instrument is wet or the operator's hands are wet,do not
operate the instrument.
●During measurement, do not touch conductive part of test pen.
●Do not open battery cover during measurement.
●When measuring insulation resistance, do not touch circuit under test.
WARNING
● If the instrument is abnormal, stop using it. For example: the instrument is broken or
bare metal parts are exposed.
● Be careful when working under voltages exceeding 33Vrms, 46.7Vacrms or 70Vdc,
which can cause electric shock.
● Do not replace batteries when the instrument is wet.
● Make sure that all test leads are firmly connected to test interface of the instrument.
● When opening battery cover, make sure that the instrument is turned off.
● Please read and understand this instruction manual before using the instrument.
● Always follow the requirements of the manual at all times, and keep the manual so
that it can be used for reference at any time.
● While the instrument is tested, incorrect operation may cause accidents and damage
to the instrument.

Introduction
This instrument applies a new design and a large-scale integrated
circuit to complete the measurement of parameters such as
insulation resistance, DC voltage, and AC voltage; it has
comprehensive functions, high accuracy, stable performance,
convenient and reliable operation. It is suitable for measuring
insulation resistance of various electrical equipment and
insulation materials such as transformers, motors, cables,
switches, electrical appliances, etc., and for maintenance, testing
and verification of various electrical equipment.
Functions
1. Measurement of insulation resistance
2. AC measurement
3. DC measurement
4. Small resistance measurement
5. Live detection of tested resistance
6. Short circuit protection of measured resistance
7. AC and DC automatic identification
8. Measurement data is locked.
9. Polarization Index
10. Absorption ratio test
11. Automatic discharge
CAUTION
● Before measuring the insulation resistance, the circuit under test must be
completely discharged and completely isolated from other power circuits.
● If test pen is damaged and needs to be replaced, it must be replaced with
test pen of the same model and the same electrical specifications.
● Do not use the instrument when the battery indicator ( ) indicates that the
power is exhausted. If the instrument will not be used for a long time, please
remove and store batteries.
●Do not store or use this instrument in high temperature, high humidity,
flammable, explosive and strong electromagnetic field environment.
Implication of relevant icons of this instrument:
AC
grounding
The instrument is double
insulated or reinforced
ACV
Applicable standard of this instrument: IEC 6010-1 CATIII 600V
CATI 2500V
-04- -05-

12. Low battery reminder
13.Large LCD screen digital display
14. External DC power supply DC9V 1.5A
15.10M internal resistance measurement
16. Over limit alarm
17.Auto range
18. Red alarm light, buzzer alarm.
19. High voltage alarm
20. Test voltage display
Name of parts
CON TIN UITY
AC. V
HOLD/
PRESS TO T EST
LOC K
<600V
① ② ③ ④ ⑤ ⑦ ⑥
⑧
⑨
⑩ ⑪
① LINE hole
② V hole
③ G hole
④ EARTH hole
⑤ HOLD / Sound switch button
⑥ TEST button
⑦ PI / DAR button
⑧ Rotary gear
⑨ Technical parameters of DC port for external power
⑩ Black test lead with crocodile clip
⑪ Red test lead with crocodile clip
-06- -07-
0
O
D I
S
C
H
U
T
A
A
R
G
E

Specifications
1.Technical specifications:
176x x mm110 77
About 12 hours
Approximately 1.5A (maximum) (normally
maintained at approximately 50mA)
DC9V (6x1.5V AA batteries)
≥1000MΩ/ DC 1000V (between circuit
and periphery)
AC 6000V (50 / 60Hz) / 5 seconds
(between circuit and periphery
Insulation resistance range: AC 1200V / 10 seconds
Voltage range: AC 720V / 10 seconds
Temperature: -20 ℃ -60 ℃ / Humidity:
≤90%
Temperature: 0℃-40 ℃ / Humidity:
≤85%
≤2000m (for indoor use)
2 times / second.
Higher range: 500 counts Lower range:
1 count (only on insulation resistance range)
Technical index
Large-screen LCD (up to 500 counts).
Hi: The mark appears on insulation resistance range.
Technical
parameters
display:
Over limit
indication:
Auto range:
Sampling
Rate:
Allowed
altitude:
Operation
environment:
Operation
environment:
Overload
protection:
Withstand
voltage:
Insulation
resistance:
power supply
Current
consumption:
Battery Life:
Dimension:
2.Insulation resistance test：
Rated voltage
Measurement range
Open circuit voltage
Standard test
Constant current
Short circuit
Accuracy
100V
0~1.5GΩ
DC 100V
+20% -0%
0.1MΩ load time
1mA~1.2mA
About 2.0mA
±5%rdg±3%dgt(above 100KΩ）
250V
0~5.5GΩ
DC 250V
+20% -0%
0.25MΩload time
1mA~1.2mA
500V
0~5.5GΩ
DC 500V
+20% -0%
0.5MΩload time
1mA~1.2mA
1000V
0~5.5GΩ
DC 1000V
+20% -0%
1.0MΩload time
1mA~1.2mA
3.Small resistance measurement：
Open circuit voltage
Measuring range
Resolution
Accuracy
About 5.0V
0.0~999Ω
0.1Ω
+（2%+3）
_
4.Voltage measurement：
30 ~ 600V (resolution 1V):
AC voltage
30~600V（50/60Hz）
DC voltage
±30~±600V
1V
±2%rdg±3dgt
Resolution
Accuracy
Measurement
range
-08- -09-

LCD Displays
A
S
R
Q
P
O
N
G
E
F
H
I
J
K
L
BCD
M
A. battery power
B. Polarization index measurement
C. Absorption ratio measurement
D. Reading lock
E. resistance unit
F. voltage unit
G. resistance or voltage value
H / I. resistance unit
J. voltage unit
K. beep icon
L. resistance or
voltage value
M. warning icon
N. DC voltage
O. AC voltage
P. second
Q. minute
R. timing value
S. timing icon
2.Operation manual
1.Measurement of insulation resistance
1) Before measurement, be sure to connect first, connecting red
test lead to LINE, connecting black test lead to EARTH, holding
tested object with clip, then start measuring after ensure safety; as
shown below;
2) Turn the knob to the insulation resistance gear, with the
corresponding gear value displaying on the upper right corner of
the screen, and "___" or the last measured resistance value is
displayed below, press TEST button and turn clockwise to lock,
start with high voltage starts, and tart to measure the resistance of
tested object.
3) After measurement starts, the voltage value is displayed on the
upper right corner of LCD, measured time on the upper left corner,
and resistance value of the measured object is displayed on the
lower part. At the same time, warning icon appears, red alarm light
is on, and the buzzer let out "didi" sound to remind users to pay
attention to safety and prevent electric shock danger;)
4) Press HOLD button once to lock the reading with HOLD icon
displayed at the same time. Press HOLD button again for unlocking,
and HOLD icon is no longer displayed; long press HOLD button to
turn beep sound on or off;
5) After measuring resistance value, turn TEST button
counterclockwise and release it. The high voltage is off, with the
measurement and timing stopping; the gear value will be displayed
on the upper right corner, and the resistance reading will be locked;
6) After measurement is completed, twist the knob to OFF to turn off
the meter;
7) Before starting the measurement, press PI / DAR button to switch
polarization index / absorption ratio measurement function, as
following steps.
Measurement
-10- -11-

Pi (polarization index
measurement)
judgement standard
DAR (absorption ratio
measurement)
10-minute insulation resistance value /
1-minute insulation resistance value
＞ OR = 4 4——2 2.0——1.0 ＜ OR = 1
best good warning bad
1-minute insulation resistance /
30-seconds insulation resistance
1-minute insulation resistance /
15-seconds insulation resistance
1.25——1.0
Pi (polarization index
measurement)
DAR (absorption ratio
measurement)
DAR (absorption ratio
measurement)
judgement standard
＞ OR = 1.4＜ OR = 1
best good bad
CON TIN UITY
AC. V
HOLD/
PRESS TO T EST
LOC K
<600V
R
CON TIN UITY
AC. V
HOLD/
<600V
CON TIN UITY
AC. V
HOLD/
PRESS TO T EST
LOC K
<600V
CON TIN UITY
AC. V
HOLD/
<600V
Note: This instrument is equipped with a 10MΩ precision resistor for
self-test.
Connect test lead to LINE and V holes, and twist the knob to any range of
the insulation measurements. Press "TEST" button, and the screen will
display 10.0MΩ, as shown below:
-12- -13-
0
O
D I
S
C
H
U
T
A
A
R
G
E
0
O
D I
S
C
H
U
T
A
A
R
G
E

2.Small resistance measurement 0 999（ ~ Ω）：
1) Before measurement, connect wires first, with red wire to EARTH,
and black wire to GND; holding tested object with clip, then start
measuring after ensure safety; as shown below;
2) Turn the knob to the small resistance position. The upper-right
corner of the screen displays gear voltage 5.0V, and the lower part
displays "---" or small resistance value measured last time;
3) Press TEST button and turn it clockwise to start small resistance
measurement. The upper right corner of the screen displays voltage
value across the measured object, that is, the voltage value between
the two red and black test leads, and the measured small resistance
value is displayed below;
4) When the measured resistance is less than 20Ω, a buzzer lets out
beeping;
5) Turn TEST button counterclockwise and release it to stop
measurement. The upper-right corner will restore and display voltage
of 5.0V, and measurement resistance reading is locked;
6) After measurement is completed, twist the knob to OFF to turn off
the meter;
R
CON TIN UITY
AC. V
HOLD/
PRESS TO T EST
LOC K
<600V
Figure 5
3.Voltage measurement：
1) Before measurement starts, connect the wires first, with red wire to
V, and black wire to GND; as shown below;
2) Turn the knob to voltage gear. At this time, the upper right corner of
the screen displays the highest voltage that the instrument can
measure, and the lower part displays voltage value measured in real
time;
3) When AC power is measured, AC icon appears, and when DC power
is measured, DC icon appears. If potential of red test pen is lower
than that of black test pen, negative reading is displayed, otherwise
positive reading is displayed;
4) after the measurement is completed, twist the knob to OFF to turn
off the meter;
V
CON TIN UITY
AC. V
HOLD/
PRESS TO T EST
LOC K
<600V
Figure 6
-14- -15-
0
O
D I
S
C
H
U
T
A
A
R
G
E
0
O
D I
S
C
H
U
T
A
A
R
G
E

Note:
1. During measurement above, when the voltage between red and
black test leads is high, a warning icon will be displayed to warn
operator that there is high voltage, pay attention to safety and
prevent the danger of electric shock;
2. During measurement, press HOLD once to lock the reading, but
the measurement is still going on, with reading not updated; do not
take the reading as safe even if it is small. You still need to prevent
the danger of high voltage electric shock;
3. When measuring insulation resistance or small resistance, before
measurement starts, if a warning icon appears on the screen, it
indicates that the measured object may be charged. Pressing TEST
button at this time will not start measurement; you must discharge
the power first.
4. When measuring small resistance, after measurement starts, if
the measured object is charged
and the voltage between the red and black test leads is greater than
5.4V, the measurement will stop automatically;
5. When switching gear knob, the last ongoing measurement will
stop and the high voltage will be off at the same time;
6. When red and black wires have been inserted into EARTH and
GND, it is strictly forbidden to insert two test leads into high
voltage, otherwise the instrument will be burnt out, and even cause
electric shock, fire, explosion and other accidents that endanger
personal safety;
7. When measuring insulation resistance, after measurement starts,
the measurement will be automatically stopped when resistance
value is less than 1MΩ for 20 seconds, or the resistance value is 0
for 5 seconds.
8. If “ ” icon appears on LCD, it means that batteries are low and
need to be replaced. You can also remove batteries and connect
them to DC 9V power adapter.
3. Other items
Attentions
Maintenance and warranty
Maintenance:
1. Do not store or use the unit in following locations where
the unit may be subject to:
a. Splashes of water or high levels of dust.
b. air with high salt or sulphur content.
c. Air with other gases or chemical materials.
d. High temperature or humidity (above 60oC, 90%,) or
direct sunlight.
2. Do not disassemble the unit or attempt internal
alterations.
3. Never use alcohol or thinner to clean the unit casing that
will especially erode the LCD surface; just clean the unit
lightly as needed with little clean water.
Warranty:
1. About relative warranties please read warranty card.
2. We disclaim any liability due to: client's transportation
damages; incorrect use or operation;
manipulation, alterations or repair attempts.
Statement
a. Dispose of battery should be in accordance with
local laws and regulations.
b.Our company shall hold no any responisibility resulting
from using.output from this product as an direct or
indirect evidence.
c. We reserve the rights of upgrading and amending
the design of the product as well as the manual
updating, and the product is subject to change
without any further notification.
-16- -17-