Page 1
Warranty
CT9667
FLEXIBLE
CLAMP ON SENSOR
Instruction Manual
September 2013 Revised edition 1
Printed in Japan
CT9667A981-01 13-09H
Warranty malfunctions occurring under conditions of normal use in conformity with the Instruction Manual and Product Precautionary Markings 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 distributor from which you purchased the product for further information on
warranty provisions.
Introduction
Thank you for purchasing the HIOKI Model CT9667 Flexible Clamp on
Sensor. To obtain maximum performance from the device, please read
this manual first, and keep it handy for future reference.
Initial Inspection
When you receive the device, in spect it carefully to ensure th at no damage occurred during shipping. If damage is evident, or if it fails to operate according to the specifications, contact your authorized Hioki
distributor or reseller.
Overview
The CT9667 measures large currents of up to 5000 A AC.
The hollow core coil makes the sensor unit highly flexible, allowing it to
be used for clamping in narrow spaces with crowded wiring.
1234
Safety Information
This manual contains information and warnings essential for safe operation of the device and for maintaining it in safe operating condition. Before using it, be sure to carefully read the following safety precautions.
This device is designed to comply with IEC 61010 Safety Standards, and has been thoroughly tested for safe ty 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 precautions in the manual before use. We disclaim any responsibility
for accidents or injuries not resulting directly from device
defects.
Safety Symbols
In the manual, the symbol indicates particularly important 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 DC (Direct Current).
Indicates AC (Alternating Current).
Wear appropriate protective insulation (insulating rubber
gloves and boots, helmet and etc.) when connecting and
disconnecting from live electric circuits.
The following symbols in this manual indicate the relative importance
of cautions and warnings.
Indicates that incorrect operation presents an extreme
hazard that could result in serious injury or death to the
user.
Indicates that incorrect operation presents a significant
hazard 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.
Symbols for Various Standards
WEEE marking:
This symbol indicates that the electrical and electronic
appliance is put on the EU market after August 13, 2005,
and producers of the Member States are required to display it on the appliance under Article 11.2 of Directive
2002/96/EC (WEEE).
This symbol indicates that the product conforms to safety
regulations set out by the EC Directive.
Other Symbols
Indicates a prohibited action.
Accuracy
rdg.
(reading or displayed value)
f.s.
(maximum display value or
scale length)
The value currently being measured and
indicated on the measuring instrument.
The maximum displayable value or
scale length. This is usually the name of
the currently selected range.
Measurement categories
This device complies with CAT III (1000 V), CAT IV (600 V) safety
requirements. To ensure safe operation of measurement devices, IEC
61010 establishes 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
CAT III :Primary electrical circuits of heavy equipment (fixed installa-
CAT IV :The circuit from the service drop to the service entrance, and
Using a measurement device in an environment designated with a
higher-numbered category than that for which the device is rated
could result in a severe accident, and must be carefully avoided.
Use of a measurement instrument that is not CAT-rated in CAT II to
CAT IV measurement applications could result in a severe accident,
and must be carefully avoided.
electrical outlet by a power cord (portable tools, household
appliances, etc.)
CAT II covers directly measuring electrical outlet receptacles.
tions) connected directly to the distribution panel, and feeders from the distribution panel to outlets.
to the power meter and primary overcurrent protection
device (distribution panel).
Usage Notes
Follow these precautions to ensure safe operation and to obtain the full
benefits of the various functions.
Instrument Installation
Avoid the following locations that could cause an accident or damage to the device.
Exposed to direct
sunlight
Exposed to high temperature
Exposed to water, oil,
other chemicals, or
solvents
Exposed to high
humidity or condensation
Exposed to high
levels of particulate
dust
Storage temperature and humidity (no condensation)
: -10 to 60°C (14 to 140°F), 80%RH or less
Operating temperature and humidity (no condensation)
: 0 to 40°C (32 to 104°F), 80%RH or less
: 40 to 45°C (104 to 113°F), 60%RH or less
: 45 to 50°C (113 to 122°F), 50%RH or less
In the presence of
corrosive or
explosive gases
Exposed to strong
electromagnetic
fields
Near electromagnetic
radiators
Near induction
heating systems
(e.g., high-frequency
induction heating
systems and IH
cooking utensils)
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.
• Before using th e device, make sure that the insulation on the cables is undamaged and that no bare
conductors are improperly exposed. Using the
device in such conditions could cause an electric
shock, so contact your authorized Hioki distributor
or reseller for repair.
• To avoid short circuits and potentially life-threatening hazards, never attach the device to a circuit that
operates at more than 1000 V AC.
• This device should only be connected to the secondary side of a breaker, so the breaker can prevent an
accident if a short circuit occurs. Connections
should never be made to the primary side of a
breaker, because unrestricted current flow could
cause a serious accident if a short circuit occurs.
• The maximum input current is 10,000 A. Attemptin g
to measure current in excess of the maximum input
could destroy the device and result in personal
injury or death.
• The maximum rated voltage between input te rminals
and the ground is as follows;
(CAT III) 1000 Vrms AC
(CAT IV) 600 Vrms AC
Attempting to measure voltages exceeding this level
with respect to ground could damage the device and
result in personal injury.
• Do not allow the device to get wet, and do not take measurements with wet hands. This may cause an electric shock.
• To avoid electric shock when measuring live lines, wear
appropriate protective gear, such as insulated rubber gloves,
boots and a safety helmet.
• To avoid electric shock, stop using this device if it shows
either of the following signs of damage, and do not use the
device again until it has been repaired.
1.The yellow sensor cover is damaged, and any red part
is visible beneath the cover.
2.The yellow connector cover is damaged, and any
black part is visible beneath the cover.
• Before turning the devic e on, make sure the supply voltage
matches that indicated on the AC adapter. Connection to an
improper supply voltage may damage the device or AC
adapter and present an electrical hazard.
• Be careful to avoid dropping the d evice or otherwise subjecting
them to mechanical shock, which could damage the mating surfaces and adversely affect measurement.
• Do not slant the device or place it on top of an uneven surface.
Dropping or knocking down the device can cause injury or damage
to the device.
• Keep the clamp sensor connector free from foreign objects, which
could interfere with clamping action.
• Avoid stepping on or pinching cables, which could damage the cable insulation.
• To avoid damaging the cables, do not bend or pull them.
• Note that the device may be damaged if current exceeding the selected measurement range is applied for a long time.
Accurate measurement may be impossible in the presence of strong
magnetic fields, such as near transformers and high-current cond uctors, or in the presence of strong electromagnetic fields such as near
radio transmitters.
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Specifications
0
5,000
10,000
15,000
10 100 1000 10000 100000
周波数 [Hz]
入力電流 [A]
1k 10k 100k
Frequency
Input current
Switch
Sensor connector
Sensor
BNC connector
AC Adapter connection terminal
(Use the optional 9445-02/03 AC Adapter)
Circuit box
Cable
POWER
LED
OVER
LED
Insert the batteries.
1
Screw
Battery
cover
Necessary tool:
Two LR6 alkaline batteries
Phillips screwdriver
1. Turn OFF the power to the
circuit box. If the AC adapter
is connected, disconnect it.
2. Turn the circuit box over and
use a Phillips screwdriver to
remove the retaining screw
from the battery cover.
3. Remove the battery cover
and mount two new LR6 alkaline batteries. Make sure
the polarity is correct.
4. Mount the battery cover and
tighten the retaining screw.
Rear of Circuit box
Connect the BNC connector.
Connector
guide
BNC connector grooves
2
1
2
Lock
Engage the BNC connector
grooves with the connectorguide projections, and turn the
connector clockwise to lock the
components.
To remove the BNC connector: Turn the connector coun-
terclockwise and pull it out.
Rotate the dial on the connec-
tor and remove the sensor after
aligning the mark in the
“UNLOCK” position.
Open the sensor connector.
3
1
2
Remove
Rotate
Electric
conductor
L
O
A
D
S
O
U
R
C
E
Clamp the conductor.
4
Position the clamp with the current
direction indicator pointing toward the
load side. (If installed in the opposite
direction, the phase deviates 180
degrees.)
Hold only one conductor at the
clamp center with the current
direction indicator pointing toward the load side.
Current direction
indicator
Select the range.
6
Insert the sensor into the connector and rotate the dial until
the mark is in the “LOCK”
position.
The clamp sensor connection
may come loose if it is pulled
with excessive force.
Select the desired current
range with the switch.
When using the AC adapter for
continuous monitoring, we recommend that you also use batteries to prevent interruptions
due to instantaneous power
outages.
5
Connect the connector.
2
1
Insert
Rotate
OK
Do not force the sensor
into a bent position.
Pull
Wire band
Do not store unused in a bent
position.
Do not pull with excessive force
while clamped around a conductor.
(Accuracy guaranteed for one year at 23±5°C (73±9°F), 80%RH or less)
Operating environment
Operating temperature and
humidity
Storage temperature and
humidity
Power supply
Rated supply voltage
Maximum rated power
Continuous operating time
(using batteries)
Measurable conductor
diameter
Sensor cable Cross-sec-
tional diameter
Cable length
Dimensions (circuit box)
Mass
Dielectric strength
Maximum rated voltage to
earth
Applicable Standards
Accessories
Options
Conditions of guaranteed
accuracy
Period of guaranteed
accuracy
Rated primary current 5000 A AC/ 500 A AC
Measurement ranges 5000 A AC/ 500 A AC
Crest factor 3 or less
Maximum input current 10,000 A continuous (at 45 to 66 Hz)
Output voltage 500 mVAC f.s.
Amplitude accuracy
Offset voltage
Phase accuracy Within ±1° (at 45 to 66 Hz)
Frequency band 10 Hz to 20 kHz (within ±3dB)
Temperature characteristic
Effect of conductor
position
Effect of external magnetic
field
Output impedance 50 Ω (±5%)
Frequency derating characteristics (continuous, design values)
POWER LED indicator
OVER LED indicator
Indoors, Pollution Degree 2,
altitude up to 2000 m (6562-ft.)
Temperature: 0 to 50
Humidity (non-condensating)
: 0 to 40
: 40 to 45
: 45 to 50
(When using batteries, depends on battery specifications.)
-10 to 60
80%RH or less (non-condensating), excluding batteries
LR6 alkaline battery x 2 or AC Adapter (option) or
external 5 to 15 V DC power supply
When using batteries: 1.5 VDC × 2
When using AC adapter or external DC power supply: 5 to 15 VDC
(Voltage fluctuations of ±10% from the rated supply
voltage are taken into account.)
When using batteries: 35 mVA
When using AC adapter or external DC power supply: 0.2 VA
Approx. 7 days (at 23°C, continuous)
254 mm or less
Approx. 13 mm
Approx. 2 m (78.74”) (between sensor an d circuit box )
Approx. 1 m (39.37”) (output cable)
Approx. 35W × 120.5H × 34D mm (1.38”W × 4.74”H
× 1.34”D) (sans protrusions)
Approx. 470 g (16.6 oz.)
(Sensor + circuit box, including batteries)
8.54 kVACrms (at 50/60 Hz, for 15 seconds),
between circuit and sensor
1000 VACrms or less (Measurement Category III)
600 VACrms or less (Measurement Category IV)
(Anticipated Transient Overvoltage: 8000 V)
Safety EN61010
EMC EN61326, EN61000-3-2, EN61000-3-3
LR6 alkaline battery............................................. 2
Instruction Manual
(Japanese/ English/ Chinese)......................each 1
9445-02 AC Adapter
9445-03 AC Adapter (for EU)
23±5°C (73±9°F), 80%RH or less,
No deformation of winding cross-section
1 year
°C (14 to 140°F)
°C (32 to 122°F)
°C (32 to 104°F),
°C (104 to 113°F),
°C (113 to 122°F),
,
±
2% rdg.±0.3% f.s.
±1 mV or less
(at 45 to 66 Hz, at sensor center)
0 to 50°C range: 0.05 × accuracy specifications/°C
32 to 122°F range: 0.09 × accuracy specifications/°F
Within ±3% (deviation from center)
1.5%/f.s. or less.
(in a magnetic field of 400 A/m, 50/60 Hz)
Green: Power supply is on.
Red: Battery life is low (when using battery power).
Off: Power supply is off.
Red: Range exceeded
(peak value of at least 3× range).
5 678
80%RH or less
60%RH or less
50%RH or less
Names of Parts
Pre-Operation Inspection
Check the following before using the device.
Check Items Diagnose and Solution
Is there a broken connection
involving the connector or sensor
base?
Is the cable insulation torn?
When the switch is placed in any
position other than “OFF ,” does the
POWER LED turn green?
If you are unable to make measurements
properly, discontinue use and contact
your authorized Hioki distributor or
reseller.
If there is any damage, electric shock
may result. Discontinue use and have the
sensor repaired.
If the LED turns red, the remaining battery life is low. Replace the batteries
soon.
If the LED does not turn on, there is no
battery life remaining. Replace the batteries.
Measurement Procedures
• To avoid electric shock when replacing the batteries, first disconnect the clamp from the object to be measur ed, and then
remove the battery cover.
• After replacing the batteries, replace the battery cover and
screws before using the device.
• Battery may explode if mistreated. Do not short-circuit,
recharge, disassemble or dispose of in fire.
• Handle and dispose of batte ries in accordanc e with local regulations.
Do not mix old and new batteries, or different types of batteries.
Also, be careful to observe battery polarity during installation. Otherwise, poor performance or damage from battery leakage could
result.
• After use, always turn OFF the power.
• The [POWER] LED will turn red when battery voltage becomes low.
Replace the batteries as soon as possible.
• When using an AC adapter, always use the optional AC adapter.
• When using the AC adapter and batteries at the same time, the AC
adapter takes precedence. Switching between the AC adapter and
battery power during measurement may cause interference in the
output.
Attach the clamp around only one conductor. Single-phase (2-wire) or
three-phase (3-wire) cables clamped together will not produce any
reading.
When disconnecting the BNC connector or sensor connector, be
sure to release the lock before pulling off the connector. Forcibly
pulling the connector without releasing the lock, or pulling on the
cable, can damage the BNC connector or sensor connector.
Maintenance and Service
Do not attempt to modify, disassemble or repair the device; as
fire, electric shock and injury could result.
To avoid corrosion and damage to this device from battery leakage,
remove the batteries from the device if it is to be stored for a l ong
time.
• 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 gasoline, as they can
deform and discolor the case.
• If the device seems to be malfunctioning, contact your authorized
Hioki distributor or reseller. Pack the device so that it will not sustain
damage during shipping, and include a descrip tion of existing damage. We do not take any responsibility for damage incurred during
shipping.
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