Hioki CT9691 User manual

Warranty
Warranty malfunctions occurring under conditions of normal use in con-
formity with the Instruction Manual and Product Precautionary Mark-
ings will be repaired free of charge. This warranty is valid for a period
of one (1) year from the date of purchase. Please contact the distribu-
tor from which you purchased the product for further information on
warranty provisions.
Introduction
Thank you for purchasing the HIOKI Model CT9691, CT9692,
CT9693 Clamp on AC/DC Sensor. To obtain maximum perfor-
mance from the device, please read this manual first, and keep
it handy for future reference.
Initial Inspection
When you receive the device, inspect it carefully to ensure that
no damage occurred during shipping. In particular, check the
accessories, panel switches, and connectors. If damage is evi-
dent, or if it fails to operate according to the specifications, con-
tact your dealer or Hioki representative.
Maintenance and Service
• To clean the device, wipe it gently with a soft cloth moistened
with water or mild detergent. Never use solvents such as
benzene, alcohol, acetone, ether, ketones, thinners or gaso-
line, as they can deform and discolor the case.
• If the device seems to be malfunctioning, contact your dealer
or Hioki representative.
• Pack the device so that it will not sustain damage during ship-
ping, and include a description of existing damage. We do not
take any responsibility for damage incurred during shipping.
• When disposing of the unit, do so in accordance with all
applicable local regulations.
This manual contains information and warnings essential for
safe operation of the device and for maintaining it in safe oper-
ating condition. Before using it, be sure to carefully read the fol-
lowing safety precautions.
Safety Symbol
The following symbols in this manual indicate the relative impor-
tance of cautions and warnings.
Symbols for Various Standards
Measurement Categories
This device complies with CAT III safety requirements.
To ensure safe operation of measuring instruments, IEC 61010 estab-
lishes safety standards for various electrical environments, categorized
as CAT II to CAT IV, and called measurement categories.
CAT II: Primary electrical circuits in equipment connected to an AC
electrical outlet by a power cord (portable tools, household
appliances, etc.)
CAT II covers directly measuring electrical outlet receptacles.
CAT III: Primary electrical circuits of heavy equipment (fixed installa-
tions) connected directly to the distribution panel, and feed-
ers from the distribution panel to outlets.
CAT IV: The circuit from the service drop to the service entrance, and
to the power meter and primary overcurrent protection device
(distribution panel).
Follow these precautions to ensure safe operation and to obtain
the full benefits of the various functions.
Instrument Installation
Preliminary Checks
Before using the device for the first time, verify that it operates
normally to ensure that no damage occurred during storage or
shipping. If you find any damage, contact your authorized Hioki
distributor or reseller.
The CT9691, CT9692, and CT9693 Clamp on AC/DC Sensors
are designed to be used with the 3290 and 3290-10 Clamp on
AC/DC HiTesters or the CT6590 Sensor Unit (collectively, “in-
struments”).
The 3290 and 3290-10 automatically detect the sensor when it
is connected and set the range accordingly. This combination of
equipment can be used to measure DC, AC, and AC+DC cur-
rent in live lines.
CT9691 Clamp On AC/DC Sensor
CT9692, CT9693 Clamp On AC/DC Sensor
Perform the following inspection before starting measurement:
Do not attempt to modify, disassemble or repair the
device; as fire, electric shock and injury could result.
Safety
CT9691,CT9692,CT9693
CLAMP ON AC/DC SENSOR
Instruction Manual
Sept. 2015 Revised edition 2
Printed in Japan
CT9691A981-02 15-09H
EN
This device is designed to comply with IEC 61010 Safety
Standards, and has been thoroughly tested for safety
prior to shipment. However, mishandling during use
could result in injury or death, as well as damage to the
device. Using the device in a way not described in this
manual may negate the provided safety features.
Be certain that you understand the instructions and pre-
cautions in the manual before use. We disclaim any
responsibility for accidents or injuries not resulting
directly from device defects.
In the manual, the symbol indicates particularly impor-
tant information that the user should read before using the
device.
The symbol printed on the device indicates that the
user should refer to a corresponding topic in the manual
(marked with the symbol) before using the relevant
function.
Indicates a double-insulated device.
Indicates that the instrument may be connected to or dis-
connected from a live circuit.
Indicates that incorrect operation presents an extreme haz-
ard that could result in serious injury or death to the user.
Indicates that incorrect operation presents a significant haz-
ard that could result in serious injury or death to the user.
Indicates that incorrect operation presents a possibility of
injury to the user or damage to the device.
Indicates advisory items related to performance or correct
operation of the device.
Indicates the Waste Electrical and Electronic Equipment
Directive (WEEE Directive) in EU member states.
This symbol indicates that the device conforms to regula-
tions set out by the EC Directive.
• Using a measuring instrument in an environment desig-
nated with a higher-numbered category than that for
which the instrument is rated could result in a severe
accident, and must be carefully avoided.
• Using a measuring instrument without categories in an
environment designated with the CAT II to CAT IV cate-
gory could result in a severe accident, and must be
carefully avoided.
Operating Precautions
Avoid the following locations that could cause an accident or damage
to the instrument.
Exposed to
direct sunlight
Exposedtohigh
temperature
In the presence
of corrosive or
explosive gases
Exposed to
water, oil, other
chemicals, or
solvents
Exposedtohigh
humidity or con-
densation
Near induction
heating systems
(e.g., high-fre-
quency induc-
tion heating
systems and IH
cooking uten-
sils)
Exposed to
strong electro-
magnetic fields
Near electro-
magnetic radia-
tors
Operating temperature and
humidity range:
0°C to 40°C (32 to
104°F), 80% RH or less; no con-
densation
Storage temperature range: -10°C
to 50°C (14°F to 122°F), 80% RH
or less; no condensation
• Attempting to do so could cause a short cir-
cuit or accident resulting in injury or death.
• To avoid electric shock, do not remove the
device's case. The internal components of
the device carry high voltages and may
become very hot during operation.
• To avoid electric shock when measuring live
lines, wear appropriate protective gear,
such as insulated rubber gloves, boots and
a safety helmet.
To avoid damaging the sensor, do not input a cur-
rent in excess of the maximum input range. The
maximum input range varies with the frequency of
the measurement current. Note that continuously
inputting a high frequency will cause the clamp sen-
sor to generate heat.
• The tips of the clamp sensor are extremely delicate. Exer-
cise care in handling the sensor as deformation of the clamp
sensor or damage to the clamp surface caused by dropping
the sensor or bumping it into other objects may prevent ac-
curate measurement.
• Keep the clamp jaws and core slits free from foreign objects,
which could interfere with clamping action.
• To prevent cable damage, do not step on cables or pinch
them between other objects. Do not bend or pull on cables
at their base.
• Measurements are degraded by dirt on the mating surfaces
of the clamp on sensor, so keep the surfaces clean by gently
wiping with a soft cloth.
Overview
Parts Names
Pre-Operation Inspection
No. Inspection step
(Continue inspection if OK.) Corrective action
(Perform when unit fails
inspection.)
1Is the clamp cracked or dam-
aged? If there is any damage, electric shock may result. Discontinue
use and have the sensor
repaired.
2 Is the cable insulation torn?
3Is there a broken connection involving the connector or sen-
sor base?
You will not be able to perform
proper measurement. Cease
use and contact your dealer.
1
Perform zero-adjustment.
2
Connect the clamp sensor to the measurement target.
3
Remove the clamp sensor after measurement is complete.
4
Model CT6590
Measuring
instrument
Model 3290, 3290-10
Lever
Output
connector
Clamp sensor
Front side Back side
Sensor lock
lever
LOCK
position
UNLOCK
position
Cable
Protective
barrier
Output
connector
Lever
Cable
Protective
barrier
Clamp sensor
CT9692 CT9693
Lever

For more information about instrument operation and settings, see the
instrument’s instruction manual.
Connect the sensor to the instrument.
Perform zero-adjustment. (DC measurement)
Correct zero output under no-input conditions.
Connect the sensor to the measurement target.
Remove the sensor after measurement is complete.
*1: Derating according to frequency
*2: In an external electromagnetic field of 400 A/m
"Peak input" is only available in conjunction with 3290 or 3290-10.
For more information about the combination accuracy with the instrument, see the instru-
ment’s instruction manual.
Amplitude accuracy design value is DC < f < 5 Hz. Phase accuracy design value is DC < f < 10 Hz.
rdg. : The value currently being measured and indicated on the measuring device.
Hall elements are subject to individual variation, and it is not
possible to specify the magnitude or tendency of that variation.
When using the sensor in an operating environment character-
ized by large temperature variations, it is recommended to as-
sess variation in the zero point under no-input conditions. Zero-
point variation affects DC by not AC mode operation. Reference
examples are provided below to illustrate zero-point variation
(23°C reference) relative to temperature variations for each
sensor. (There is also a significant level of variation in charac-
teristics among individual products.) The clamp sensor operat-
ing temperature range is 0°C to 40°C. (See below for example
characteristics.)
CT9691: Zero-point variation caused by temperature
CT9692: Zero-point variation caused by temperature
CT9693: Zero-point variation caused by temperature
The clamp sensor’s detection circuitry uses Hall elements.
Since Hall elements exhibit temporal drift as well as ambient
temperature-dependent drift, the sensor’s internal circuitry per-
forms temperature correction. Reference examples are provid-
ed below to illustrate sensitivity variation (23°C reference)
relative to temperature for each sensor. (There is also a slight
level of variation in characteristics among individual products.)
Sensor sensitivity variation caused by temperature
Measurement Procedures
• To avoid electric shock, do not touch the portion
beyond the protective barrier during use.
• The maximum rated voltage is 600 V AC/DC.
Attempting to measure voltages exceeding 600 V
with respect to ground could damage the device
and result in personal injury.
• The continuous maximum input range is based on the rise in
temperature that occurs due to self-heating during measure-
ment. Do not input a current in excess of this range. Doing
so may damage the sensor. (The continuous maximum input
range varies with the sensor and the frequency of the mea-
surement current. Refer to thefrequency derating character-
istics graph in the “Specifications” section.)
• When removing the output connector, always grip the metal
part of the connector. Pulling on the connector with exces-
sive force may damage the connector.
• When a conductor to be measured is placed in the center of the
clamp core, measurement is performed the most accurately, with no
effect of the conductor position.
• Attach the clamp around only one con-
ductor. Single-phase (2-wire) or three-
phase (3-wire) cables clamped together
will not produce any reading.
• To measure low current levels, multiple
windings may be used to increase relative sensitivity (10 windings
multiplies the measured current by a factor of 10). However, in this
case, the windings should be made radially, with a diameter of at
least 20 cm
• The reading may show a measurement greater than the actual value
due to magnetic-field interference. The amount of interference varies
depending on the sensor. For details, see “External magnetic-field
interference” in Specifications.
1
Wide part on top 1. If the included connector cover is
attached to the clamp sensor’s out-
put connector, slide it up the cable.
2. Gripping the black part of the connec-
tor, insert it into the jack.
Orient the connector so the wide part is
facing up and insert it until you hear it
click into place.
3. Return the connector cover.
When removing the connector, slide the
connector cover toward the cable and
pull on the metal part of the connector.
Remove
Connector cover
2
3
1. Open the clamp sensor, align the
current direction mark with the
direction of the current in the wire,
and close the clamp with the wire
roughly centered in the clamp.
If the phase is not an issue during AC
measurement, the direction of current
flow in the wire relative to the current
direction mark may be ignored.
2. When using the CT9691 sensor, set
the lock lever on the back of the
sensor to the “LOCK” position.
Locking the sensor ensures that it will
not open during measurement. If the
sensor opens even slightly during
measurement, the measured value
will decrease, and the accuracy of the
reading will not be guaranteed.
Power
source
Measured
conductor
Load
CT9691
Power
source
Measured
conductor
Load
CT9692, CT9693
Current
direction
indicator
Current
direction
indicator
4
OK
Specifications
CT9691 sensor CT9692 sensor CT9693 sensor
Rated primary cur-
rent AC/DC100 A AC/DC200 A AC/DC2000 A
Output voltage AC/DC1 V/100 A AC/DC2 V/200 A AC/DC2 V/2000 A
Maximuminputrange
(RMS value) 100 A continuous
*1
200 A continuous
*1
2000 A continuous
*1
Maximum peak cur-
rent value 150 A
peak
300 A
peak
2840 A
peak
Accuracy guarantee
for temperature and
humidity 23°C ± 5°C (73°F±9°F), 80%RH or less,
no condensation
Guaranteed accu-
racy period 1 year (Opening and closing of the sensor: 10,000 times)
Frequency band DC to 10 kHz
(-3dB) DC to 20 kHz (-3dB) DC to 15 kHz (-3dB)
Effect of conductor
position Within ±1.0% at 80 A (55 Hz) Within ±0.5% Within ±0.7%
External magnetic-
field interference 0.5 A equivalent
or less
*2
0.7 A equivalent
or less
*2
2.0 A equivalent
or less
*2
Temperature charac-
teristics 0 to 40°C range: 0.1 x accuracy specifications/°C 32°F to 104°F range: 0.18 x accuracy specifications/°F
Operating
temperature and
humidity range 0°C to 40°C (32°F to 104°F), 80% RH or less;
no condensation
Storage temperature
and humidity range -10°C to 50°C (14°F to 122°F), 80% RH or less; no condensation
Location for use Indoor, pollution degree 2,
altitude up to 2000 m (6566 feet)
Maximum rated volt-
age to earth AC/DC 600 V
Dielectric strength
Model CT9691,CT9692,CT9693:7060 V AC for 1minute
(sensor - case)
Model CT9691: 5400 V AC for 1 minute (sensor - circuit),
Model CT9692, CT9693: 7060 V AC for 1 minute (sensor -
circuit)
Maximum rated power 50 mVA
Measurable conduc-
tor diameter
 35 mm (1.38")
or less
 33 mm (1.30")
or less
 55 mm (2.17")
or less
Dimensions Approx. 53W x
129H x 18D mm
Approx.2.09"Wx
5.08"H x 0.71"D
Approx. 62W x
167H x 35D mm
Approx.2.44"Wx
6.57"H x 1.38"D
Approx. 62W x
196H x 35D mm
Approx. 2.44"W x
7.72"H x 1.38"D
Mass Approx. 230 g
(8.1 oz.) Approx. 410 g (14.5 oz.) Approx. 500 g (17.6 oz.)
Cable length Approx. 2 m (6.6 feet)
Accessories Instruction manual (Japanese/ English/ Chinese) x 1
Applicable standards Safety EN61010, EMC EN61326
Measurement categories III
(Anticipated Transient Overvoltage: 6000 V)
Pollution Degree 2
CT9691 sensor accuracy
Frequency DC DC < f  66 (Hz) 66 < f  500 (Hz)
Continu-
ous input
I  80 (A) ±1.0%rdg.
± 0.5 mV ±1.0%rdg. ± 0.5 mV
±2.0%rdg.
± 0.5 mV
80 <
I  100
(A) ±2.5%rdg. ± 0.5 mV
Peak input
|
I
peak
|  110
(A
peak
)±1.0%rdg.
± 2 mV ±1.0%rdg. ± 2 mV
±2.0%rdg.
± 2 mV
110 < |
I
peak
| 
150 (A
peak
)±2.5%rdg. ± 2 mV
Phase - ±1.8deg. Not defined.
CT9692 sensor accuracy
Frequency DC DC < f  66 (Hz) 66 < f  1k (Hz)
Continu-
ous input
I  200 (A) ±1.0%rdg.
± 0.5 mV ±1.0%rdg.
± 0.5 mV ±2.0%rdg. ± 0.5 mV
Peak input |
I
peak
|  300
(A
peak
)±1.0%rdg. ± 2 mV ±1.0%rdg. ± 2 mV ±2.0%rdg. ± 2 mV
Phase - ±1.8deg. Not defined.
CT9693 sensor accuracy
Frequency DC 45  f  66 (Hz) DC < f
 45,
66 < f
 1k (Hz)
Continu-
ous input
I  1800 (A) ±1.5%rdg.
± 0.5 mV
±1.0%rdg.
±0.5 mV ±2.0%rdg. ±0.5 mV
1800 <
I  2000
(A) ±2.0%rdg. ±0.5 mV Not defined.
Peak input
|
I
peak
|  2300
(A
peak
)±1.5%rdg. ±2 mV ±1.0%rdg. ± 2 mV ±2.0%rdg. ±2 mV
2300 < |
I
peak
| 
2840 (A
peak
)±6.0%rdg. ±2 mV ±6.0%rdg. ± 2 mV Not defined.
Phase - ±1.8deg. DC < f < 45 Hz:
±1.8deg.
66 < f
 1k (Hz):
Not defined.
CT9693 sensor accuracy
Frequency (Hz) 100k
10k
1k
100101
-30
-25
-20
-15
-10
5
0
-5
CT9691 Frequency characteristics
GAIN (dB)
Frequency (Hz) 10k
1k100
10
60
80
100
120
100k
40
20
0
Input Current (A)
CT9691 Derating according to frequency (continuous)
Frequency (Hz) 100k
10k
1k
100101
-30
-25
-20
-15
-10
5
0
-5
GAIN (dB)
CT9692 Frequency characteristics
Frequency (Hz) 10k
1k100
10 100k
50
0
CT9692 Derating according to frequency (continuous)
100
150
200
250
Input Current (A)
Frequency (Hz) 100k
10k
1k
100101
-30
-25
-20
-15
-10
5
0
-5
GAIN (dB)
CT9693 Frequency characteristics
Frequency (Hz) 10k
1k100
10 100k
500
0
CT9693 Derating according to frequency (continuous)
1000
1500
2000
2500
Input Current (A)
Zero-point Temperature
Characteristics
Temperature Characteristics
of Sensor Sensitivity
-2.0
-1.0
0.0
1.0
2.0
-40-20 0 20406080
No.1
No.2
No.3
No.4
No.5
Current (A)
Temperature (°C)
-4.0
-2.0
0.0
2.0
4.0
-40-20 0 20406080
No.1
No.2
No.3
No.4
No.5
Current (A)
Temperature (°C)
-4.0
-2.0
0.0
2.0
4.0
-40-20 0 20406080
No.1
No.2
No.3
No.4
No.5
Current (A)
Temperature (°C)
-3
-2
-1
0
1
2
3
-50 0 50 100
CT9691
CT9692
CT9693
Deviation (%)
Temperature (°C)