ETCR 9500 User manual

CONTENT
I. Safety Precautions And Procedures ............................................... 1
1. Preliminary Instructions............................................................... 2
2. During Use................................................................................... 2
3. After Use ...................................................................................... 3
II Introduction ......................................................................................... 4
III Electrical Symbols............................................................................. 6
IV Technical Specifications................................................................... 6
V Structure.............................................................................................. 8
VI Operation........................................................................................... 9
1. Switch of high voltage detector.................................................... 9
2. Switch of main engine................................................................ 10
3. Detection on HV current.............................................................11
4. Detection on LV current............................................................. 13
5. Transformation Ratio measurement ........................................... 14
6. Data keeping and delete ............................................................. 17
7. Data storage................................................................................ 17
8. Data search................................................................................. 17
9. Data deletion .............................................................................. 18
VII Software.......................................................................................... 18
1. Real-time monitoring page......................................................... 18
2. Historical data page.................................................................... 19
VIII Replace battery............................................................................. 19
IXAccessories ..................................................................................... 20

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I. Safety Precautions And Procedures
For your own safety and to avoid damaging the instrument you are
recommended to follow the procedures described in this manual
and read carefully all instructions preceded by this symbol
Before and during measurements keep to the following
instructions:
●Do not take current measurements in wet places
●Do not take the measurements in the presence of explosive
gas and combustibles or in dusty places
●Avoid any contact with the circuit under test even though you
are not taking any measurement
●Avoid any contact with exposed metal parts, unused measuring
terminals, circuits etc. Do not take any measurement whenever
anomalous conditions occur such as deformations, breaks,
leakages, blind display etc
The herewith symbols are used in this manual and on the meter
CAUTION: refer to the instruction manual. An improper use
may damage the instrument or its components as well as endanger
the user.
High voltage danger: risk of electric shock

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1. Preliminary Instructions
●This instrument has been designer for use in environments with
pollution degree 2
●You are recommended to respect the usual safety regulations
aimed at protecting you against dangerous current and protecting
the instrument against improper use
●Only the original accessories supplied along with the instrument
guarantee compliance with the safety standards in force. They
must be in a good conditions and, if necessary, replaced with
identical ones
●Do not test nor connect to any circuit exceeding the specified
overload protection
●Do not take measurements under environmental conditions
exceeding the limits indicated in this manual
●Make sure that batteries are correctly installed
2. During Use
You are recommended to read carefully the following instructions:
CAUTION
Failure to comply with warnings and instructions may
damage the instrument and/or its components as well as
injure the operator
●Do not measure in the presence of external voltages. Although
the instrument is protected, an excessive voltage may cause
malfunction
●In any cases, safety shall come first when using this Tester,

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especially when the voltage circuit bears the voltage ofAC 100V or
more
●It is strictly forbidden to use this meter to test the wire without any
insulate protection has voltage exceed 35KV or convergence
generatrix.
●In case that the voltage circuit to be tested bearing the voltage
over 600V, the Tester shall be applied connecting insulating rod,
with the hand holding on the fifth knot of it
●Due to risk of high voltage lines, operators shall have accepted
rigid training and gained related certification for high voltage
operation before conducting field test with this Tester
●Avoid submitting the instrument to voltage while measuring (i.e.
a test lead slipping off the measuring point accidentally touching an
energized point)
CAUTION
If the “low battery”symbol is displayed
during use interrupt testing, switch off the instrument and
replace batteries.
■(Take note of the polarity when replace the battery.)
3. After Use
●Turn off the instrument pressing ON/OFF key after using it
●If you expect not to use the instrument for a long time remove
batteries
●Avoid attacking binding clips and maintain the Tester regularly.

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Soft cloth (e.g. glasses cloth), moistened by clean, antirust and
dehumidified lubricant (e.g. WD-40), instead of corrosive agent or
rough issues shall be used to gently rub down the Tester
●In case that continuing use will cause safety hazard due to the
performance of the Tester itself, stop using it and mothball it at
once, then leave it to authorized organization for handling.
●It is suggested to test the insulating strength for this Tester at
least one time a year.( AC100kV/rms, section between the fifth
knot of insulating rod)
NOTE
Major difference between ETCR9500 and
ETCR9500B is ETCR9500B obtains more
functions of phase detection and polar
detection. Other functions and specifications
are the same with ETCR9500.
II Introduction
ETCR9500 Wireless HV Current Transformation Ratio
Tester breaks through the traditional structure, specializing in
on-line measurement of high-voltage current transformer in service
under 60KV, primary and secondary current of transformers,
transformation ratio, and leakage current(ETCR9500Balso with
phase, polar, ratio difference, angle difference Indication). It
consists of high voltage detector, low-voltage secondary current
clamp, main engine, high-voltage insulation rods. The wireless
transmission signal is able to penetrate obstacles, such as walls of
buildings. The signal’s linear transmission distance is about 30m.

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The HV/LV high accuracy clamp ammeter can be used to measure
the current and leakage current varying from 0.01mA to 1000A.HV
clamp ammeter can also measure LV current.
Current clamp: In order to make sure of the high accuracy,
stability and reliability during perennial monitoring, special alloy is
selected, latest CT technology and magnetic shield technology
are adopted，which make sure almost resistance to external
magnetic field.
Main engine: Gorgeous blue LCD presents you clear
information at a glance and it possesses super large memory
space capable of storing 3,000 sets of data.
Monitoring Software: Functions such as real-time monitoring
and historical data search is available, as well as curve drawing,
ratio, max, min, average indication, alarm value setting .There are
also functions such as data documents saving and historical report
printing.
High voltage detector: It connects five knots of insulation
rods and applies in test of high/low-voltage lines bearing the
voltage below 60KV; its dedicated high-voltage current clamp can
easily clip or withdraw the lines to be tested by pressing down or
unplugging back the insulation rod, which saves time and runs
effectively; so, it is widely used for substation, power plant, power
audit department, industrial and mining establishments as well as
check station, electrician maintenance departments to conduct
current detection, opposing electricity-stealing, outdoors electrical
operation etc. The insulation rod is characterized by lightless,

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moisture protection, high temperature resistance, shock resistance,
bending resistance, high insulation, flexibility and so on.
ETCR9500 Wireless HV Current Transformation Ratio
Tester is called Wireless Transformation Ratio Tester for high
voltage; meanwhile it can function as high/low-voltage clip-on
ammeter, for high-altitude current tester, high-altitude leakage
current tester, clip-on leakage current meter with high accuracy
and other products.
III Electrical Symbols
Extremely dangerous! Operators shall rigidly follow the safe
rules, or the potential electric shock will cause personal injury
or death.
Dangerous! Operators shall rigidly follow the safe rules, or the
potential electric shock will cause personal injury or death.
Warning! The safe rule shall be followed completely, or
personal injury or damage to equipments will arise.
Alternating current (AC)
Direct current (DC)
IV Technical Specifications
Function
On-line testing for current, transformation ratio, and
leakage current of primary/secondary circuit of high/low
voltage current transformation; on-line testing for current
and transformation ratio between two sides of the
transformer (Phase, polar, ratio difference, angle
difference indication is also available on ETCR9500B)
Power source
DC6V alkaline dry battery(1.5V AAA×4) keeps a
continuous work for 30 hours
Test way
Clip-on CT
Transmission
way
Wireless transmission with linear transmission distance
about 30m
Display mode
LCD: 128dots×64dots;
Blue screen, backlight, suitable for dark places
LCD dimension
Display area: 44mm×27mm

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Tester size
Width ×Height×Thickness：
Main engine: 75mm×170mm×30mm
HV Current Clamp: 76mm×255mm×31mm
LC Current Clamp: 175mm×70mm×38mm
Clamp
Dimension
HV Current Clamp:φ48mm
LC Current Clamp: φ25×30mm
Sampling speed
About 3 times/second
Measurement
range
High voltage detector: 0.0mA~1000A
Low-voltage current clamp: 0.00mA~10A
Resolution
High voltage detector: 0.1mA
Low-voltage current clamp: 0.01mA
Gearing
Automatic gearing
Measuring
accuracy of the
primary circuit
(23℃±3℃,below
80%RH)
0.0mA~299mA: ±1%±3dgt
0.30A~49.9A: ±1.5%±5dgt
50.0A~199.9A: ±2%±5dgt
200A~600A: ±3%±5dgt
601A~1000A: ±4%±5dgt
Measuring
accuracy of the
secondary circuit
0.00mA~10A: ±1%±3dgt
(23°C ±3 °C ,below 70%RH)
Transformation
ratio
Three kinds of transformation ratios:( actual
measurement of primary/secondary circuit;
transformation on the basis of secondary circuit bearing
current 5A; transformation on the basis of 10kV-YY of
10kV/380V transformer and the Max. ratio is 1:10 million
(1.0K7)
Data storage
3,000 sets, press HOLD to hold the data ,number and
store automatically(power failure or battery replacement
will not cause data missing)
Line voltage
Test for lines bearing voltage below 60kv (insulating rods
with five knots must be used)
Data hold
Press HOLD to hold the data, and sign of “Hold”
appears; press it again, holding will be canceled.
Data search
Press HOLD and POWER to enter the mode of data
search.
Overflow display
Outrange overflow: “OL A” appears
No signal
instruction
When the main engine does not receive transmit signals,
present “No Signals”
Automatic
shutdown
15 minutes after starting up, the tester will shutdown
automatically

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Battery
voltage
When battery voltage is below 4.8v, sighs will remind
you of replacement
Weight
Main engine: about 240g (including battery)
High voltage detector: about 335g (including battery)
Low-voltage needle-point current clamp: about 190g
Total weight: about 2.5kg(including insulation rod and
battery)
External
interference
No super strong electromagnetic field; no same
frequency interference of 433 MHz and 315 MHz
Working
temperature and
humidity
-25°C ~ 45°C ; below 80%Rh
Storing
temperature and
humidity
-10°C ~60°C ; below 70%Rh
Insulation rod
size
φ32mm, 1m/know (standard configuration: five knots),
extendable
Length of the
lead of LV
current clamp
Standard: 2 meters (lengthen according to the on-site
length)
Insulation
strength
High voltage detector: AC100kV/rms(section between
the fifth insulation rod and the clamp core of high-voltage
current clamp)
Main engine and low-voltage current clamp:
AC1000V/rms
Structure
Antidrip II(high voltage detector)
V Structure
①②③

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①High voltage detector
②Main engine
③Low-voltage current clamp
1 High-voltage current clamp
2 LED power indication of HV detector
3 Power key
4 Joints of insulation rods
5 Input interface for low-voltage current
6 LCD monitor of the main engine
7 HOLD key
8 RS232 Interface
9 Output plug for low-voltage current clamp
10 Low-voltage current clamp
11 Insulation Rods
VI Operation
Before using the tester, examine whether there
is any part broken; if no, it can be put into use.
Install the battery according to the manual.
1. Switch of high voltage detector
Press POWER to start the detector, and the POWER
indicating light is on. The detector will begin to do automatic
detection and send the result to the main engine by wireless
transmission. If the indicating light keeps flickering about 15
minutes after the detector is started, this will present an
automatic shutdown and after it keeps flickering for about 30
seconds, the detector will be shut down automatically to
reduce battery consumption. During the flickering of the
POWER indicting light, pressing POWER will make the detector
continue to work. Press POWER will shut down it.

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2. Switch of main engine
Press POWER to start the engine, and LCD displays. After
the normal startup, the main engine will enter test receiving mode
(see the picture above). The primary current is the testing data of
high-voltage terminal while the secondary current the low-voltage.
In case that signals are detected in both primary and secondary
circuits, the main engine will show the transformation ratios on the
basis of secondary circuit bearing current 5A, and indicate phase.
If in phase，it shows "⊕" symbol；if out of phase, it shows "Θ"
symbol, if the phase can’t be properly identified, it shows "Er"
symbol.
If transformation ratio is too high, which means that the current
value in the primary circuit is large while it in the secondary is small,
the ratio surpasses 1000,000, i.e. “x.xxxK6” (x.xxx×106) is
displayed, the numeral value behind “K” means the power of 10. Of
course, this phenomenon will not occur in the normal operational
circuit.
In data search mode, press POWER key and shift the cursor to
“return”, return to the test mode by pressing the HOLD key, power
off by pressing the POWER key.

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3. Detection on HV current
High voltage, very dangerous！Nobody but a
qualified personnel after training could
conduct operation on it. The operator should
obey safety regulations; otherwise there will
be the danger of electric shock resulting in
personal injury or casualty.
Only when all of the five insulating bars are
connected can the high voltage line be
detected, otherwise there may be the danger
of electric shock resulting in personal injury
or casualty.
Dangerous! It is not allowable to measure
high voltage line above 60V; otherwise there
will be danger of electric shock resulting in
personal injury or casualty.
Dangerous! It is not allowable to detect the
high current wire above 1000A.
Prior to the detection, have the insulation
bars connected properly, finally have the
detector connected, and take care to avoid
any ground impact on the instrument.
Nothing but the special-made insulation bars
could be connected to the instrument.
After the detection, collect the insulation rod
in slant direction, first take apart the
detector, then the insulation bars, and take
care to avoid ground impact on detector.
High voltage detector is connected properly with 5
insulation rod and started normally .Set the detected wire at
the center of guide sector on detector pliers head (Diagram A).
High voltage detector has guide sector perpendicular to wire,
Push forward the insulation rod, the wire detected is clamped

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by the high voltage detector which starts detection and
feedback to the main set. Main set enter detection and data
collection state after its normal starting up, If the main set
receives the signal sent by the high voltage detector, there will
be a live indication of current amount on high voltage end, If
the main set fails to receive the signal sent by the high voltage
detector, the first current is indicated to be” no signal” for the
primary loop. If the main set has “OL”as its first currency
indication, it means that the first current exceeds the upper
limit of the high voltage detector. Push the insulation rod
backward, the high voltage detector is disconnected with the
wire. (As shown in Diagram C).Do your best to keep the guide
sector perpendicular to wire during withdrawing.

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Notice: For the sake of safety, please take the
instrument away from the wire after the
detection is finished.
4. Detection on LV current
High voltage, very dangerous！Nobody but a
qualified personnel after training can conduct
operation on it. The operator should strictly
follow the safety regulations; otherwise
there will be the danger of electric shock
resulting in personal injury or casualty.
Low voltage current pliers are not allowable to
detect high voltage wire above 600V or 6A;
otherwise there will be the danger of electric
shock resulting in personal injury or casualty.
1）Connect low voltage current pliers and main set, turn the
main set on, enter the detection mode.
2）Have low voltage current pliers clamp the wire(notice: it
work holding jaws is fully closed),examine the current
numerical reading, if the instrument has secondary current
indication of “OL” ,the secondary current exceeds instrument
upper current limit .
3）Reference illustrations

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Clamp live wire and null line at the same time, leakage
current could be detected.(note: total 2 wires)
Clamp the earth wire, the leakage current could be
measured(note: single wire)
Clamp the main line, total current amount could be
measured. (note: single wire)
Where its numeral reading is not easily accessible,
use high voltage detector to examine the current on
low voltage wire.
5. Transformation Ratio measurement
【Primary current】: The current collected with
high voltage current pliers is mutual inductor’s first
current
【Secondary current】: The current collected with
low voltage current pliers is mutual inductor’s
secondary current.
【Ration based on secondary current 5A】: The

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measured secondary current value is converted to
be 5A, and then convert the first current based on
that multiple, which is same with transformation
ratio. Display【XXX/5A】
【Ratio】: The ratio between the first current and
secondary current by actual measurement.
【10kV-YYconversion ratio 】: high voltage
detector collects the secondary bus current,
The ratio between transformer’s first current and
mutual inductor secondary current could be
calculated by transformer 10kV/380V
As above described, concerning high voltage detector
and the first and secondary return circuit clamped by low
voltage current pliers , the main set has an indication of the
first and secondary current number and transformation ratio, if
the first current is 680A, the secondary current is 2.00A,its
current ratio is 340.0, calculated based on the secondary loop
circuit 5A,the transformation ratio is 1700/5A，(which is
5÷2×680）,the 10kV/380V transform has a transformation ratio
of 12.9, the first current to the secondary current of mutual
inductor (which is 340÷(10kV÷380V））
①Detection display mode ②Conversion ratio display mode
In detection mode, press the HOLD key for 3 seconds,
enter the conversion display mode as shown above on the
right diagram: the first, second loop current.10kV-YY
conversion ratio. Press the HOLD key for 3 seconds, exit from
the conversion ration display mode, and return to the start-up

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detection mode.
In the ratio conversion mode, click the HOLD key to set the
second time currency base number, and conversion ratio is
calculated; press the POWER key to shift the cursor. Press the
HOLD key for 3 seconds, exit from the conversion ratio display
mode, and return to the start-up detection mode. Each time
the instrument starts up with the secondary current 5A being
the default conversion ratio.
Fig.5-1 Field Application: Measuring HV CT Ratio
Fig.5-2 Field Application: Measuring LV CT Ratio

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6. Data keeping and delete
In detection mode, press the HOLD key for LCD display of
the HOLD symbol. Press the HOLD key to release the data lock,
return to the detection mode, the “HOLD”symbol disappears.
7. Data storage
In detection mode, press the HOLD key for data holding,
the instrument will store the data and remind you the total
stored data number. The instrument has a data storing
capability of 3000 groups. If the stored data is full, there is a
symbol indication of “FULL”, clear the memory for next data
storage.
8. Data search
In detection mode, press both the HOLD key +POWER
key to enter the data search mode, meanwhile the detector will
auto-display the group 0001 data. Now press the POWER key
and shift the cursor, press the HOLD key to confirm. The
instrument are designed with fast search function from“+1、-1、
+10、-10” stored data, press the HOLD key once, search in
increased (reduced) order ,shift the cursor on “+10 、
-10”position, press the HOLD key, data number could be
increased or reduced by 100,search and view the cycled data
stored downward or upward.
Shift the cursor to “ESC” the return position, press the
HOLD key, exit from the data search mode, back to the
detection mode.

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9. Data deletion
In data search mode, press the POWER key and shift the
cursor to the “delete DEL”position, then press the HOLD key
“YES”to delete all the stored data, and return to detection
mode, it is not possible to restore the data been deleted.
VII Software
The monitor and data upload software have to be installed
and run on the computer base on Windows XP/2000 OS.
Monitoring Software: Functions such as real-time
monitoring and historical data search is available, as well as
curve drawing, ratio, max, min, average indication, alarm value
setting. There are also functions such as data documents
saving and historical report printing.
1. Real-time monitoring page
Red Curve indicates the primary current and
green curve indicates the secondary.