Hioki 9667 Instruction Manual

The Declaration of Conformity for instruments that comply to CE
mark requirements may be downloaded from the HIOKI website.

9667

FLEXIBLE

CLAMP ON SENSOR

Instruction Manual

October 2012 Revised edition 8

Printed in Japan

9667A981-08 12-10H

Specifications

Safety

Usage Notes

Introduction

Thank you for purchasing the HIOKI Model 9667 Flexible Clamp On
Sensor.
To obtain maximum performance from the product, please read this
manual first, and keep it handy for future reference.

Overview

The 9667 Flexible Clamp On Sensor measures large currents of up to
5000 A AC.
The hollow core co il ma kes th e sen sor uni t high ly fle xible , allo wing it to
be used for clamping in narrow spaces with crowded wiring. This is a
feature not seen in sensors that use conventional cores.

Inspection and Maintenance

Initial Inspection

When you receive the product, inspect it carefully to ensure that no
damage occurred during shipping. If damage is evident, or if it fails to
operate according to the specifications, contact your dealer or Hioki
representative.

Preliminary Checks

• Before using the product the first time, verify that it operates nor­mally to ensure tha t th e n o d amage occurred during st ora ge or s hi p­ping. If you find any damage, contact your dealer or Hioki
representative.

• Before using the product, make sure that the insulation on the
cables is undamaged and that no bare conductors are improperly
exposed. Using the product in such conditions could ca us e a n e lec ­tric shock, so contact your dealer or Hioki representative for repair.

Maintenance and Service

• To clean the product, wipe it gently with a soft cloth moistened with

• If the product seems to be malfunctioning, contanct your dealer or

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.

Hioki representative.

（Accuracy guaranteed for one year at 23±5°C (73±9°F), 80%RH or less)

Rated primary current 5000 to 500 A AC/ 500 to 50 A AC
Output voltage 500 mVAC f.s.
Amplitude accuracy
Frequency band 10 Hz to 20 kHz (amplitude error: within ±3dB)
Phase accuracy Within ±1° (at 45 Hz to 66 Hz)
Temperature characteristic
Effect of conductor

position
Effect of external electro-

magnetic field
Maximum input current 10,000 A continuous (at 45 to 66 Hz)

Dielectric strength
Maximum rated voltage to

earth
Operating temperature

&humidity
Temperature of conductor

to be measured
Storage temperature

&humidity
Operating environment Indoors, altitude up to 2000 m (6562-ft.)

Applicable Standards

Power supply

Maximum rated power
Battery life Approx. 7.5 day s (c o nt inuous)
Output impedance 100
Measurable conductor

diameter
Cable length

Dimensions
Mass Approx. 450 g (15.9 oz.) (including batteries)

Accessories Instruction Manual, LR03 alkaline battery x 4
Options

f.s. : maximum display value or scale length (This is usually the maximum value of the

currently selected range.)

rdg.: reading value (The value currently being measured and indicated on the measuring

product)

±

2% rdg.±1.5 mV

±

2% rdg./°
Within ±3% (deviation from center)
5 A equivalent,7.5 A max. (in an external electro-

magnetic field of 400 A/m

6880 Vrms for 15 seconds (between circuit and sen­sor, at 50/60 Hz)

1000 VACrms or less

°C (32 to 104°F)

0 to 40
densating)

°C or less (122°F or less)

50

-10 to 50
densating)

(Safety) EN61010

(EMC)

LR03 alkaline battery x 4 (1.5 VDC x 4) or
9445-02/03 AC ADAPTER (9 VDC) (option)
(Voltage fluctuations of ±10% from the rated supply
voltage are taken into account.)

35 mVA (using batteries), 50 mVA (using AC adapter)

φ254 mm or less
Approx. 2 m (78.74”) (between sensor and circuit),

approx. 1m (39.37”) (output cord)
Approx. 910 mm (35.83”)(when sensor unit is open)

Approx. 57.5W x 86.5H x 30D mm (2.26”W x 3.41”H
x 1.18”D) (Circuit box)

9445-02 AC Adapter
9445-03 AC Adapter

°C (14 to 122°F)

Ω

or less

(at 45 Hz to 66 H z , at s en so r c enter)

C

, 80%RH or less (non-con-

, 80%RH or less (non-con-

Measurement Category III, Pollution
Degree 2
(Anticipated Transient Overvoltage: 8000 V
EN61326

EN61000-3-2
EN61000-3-3

Follow these precautions to ensure safe operation and to obtain the
full benefits of the various functions.

This product is designed to conform to IEC 61010 Safety Stan­dards, and has been thoroughly tested for safety prior to ship­ment. However , misha ndling durin g use could resu lt in injury or
death, as well as damage to the product. Using the instrument/
device/ product 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 product
defects.

Measurement categories

This product complies with CATIII (1000 V) safety requirements.
To ensure safe operation of measurement products, IEC 61010 estab­lishes safety standards for various electrical environments, catego­rized as CAT II to CAT IV, and called measurement categories.

: Primary electrical circuits in equipment connected to an AC

CAT II
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 installa­tions) connected directly to the distribution panel, and feeders from the
distribution panel to outlets.

: The circuit from the service drop to the service entrance, and

CAT IV
to the power meter and primary overcurrent protection device (distri­bution pane l).

Using a measurement product in an environment designated with a
higher-numbered category than that for which the product is rated
could result in a severe accident, and must be careful ly 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 .

Safety Symbol

In the manua l, th e symbol indi cat e s part i cu l arl y i mp or ­tant information that the user should read before using the
product.

The symbol printed on the product 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 AC (Alternating Current).

Indicates DC (Direct 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 cautio ns 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 product

Advisory items relat ed to p erfor mance or co rrect op eration of
the product.

This manual contains information and warnings essential for safe
operation of the product and for maintaining it in safe operating condi­tion. Before using the product, be sure to carefully read the following
safety notes.

• To avoid short circuits and potentially life-threatening
hazards, never attach the product to a circuit that
operates at more than the 1000 V AC, or over bare
conductors.

• This product 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.

• To avoid electric shock, do not allow the product to get wet,
and do not use it when your hands are wet.

• 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 product if it shows
either of the following signs of damage, and do not use the
product again until it has been repaired.

1. The blue sensor cover is damaged, and any red part is visi-

ble beneath the cover.

2. The yellow connector cover is damaged, and any black part

is visible beneath the cover.

• Do not store or us e the p rod uct w here it could be expo sed to direct
sunlight, high temperature or humidity, or condensation. Under
such conditions, the product may be damaged and insulation may
deteriorate so that it no longer meets specifications.

• This product is not designed to be entirely water- or dust-proof. To
avoid damage, do not use it in a wet or dusty environment.

• Be careful to avoid dropping the product or otherwise subjecting
them to mechanical s hock, whi ch could damage the m ating surf ac­es of the core and adversely affect measurement.

• Keep the clamp sens or connnector free from foreign o bjects, w hich
could interfere with clamping action.

• Avoid stepping on or pinching the cable, which could damage the
cable insulation.

• To avoid damaging the cables, do not bend or pull the cables.

• Note that the product may be damaged if curren t exceeding th e 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 conduc­tors, or in the presence of strong electromagnetic fields such as near
radio transmitters.

Parts Names

BNC connector

Clamp sensor connnector

Circuit box

Cable

Sensor

Circuit box

AC Adapter connection terminal
(Use the optional 9445-02/03 AC
Adapter)

RANGE button
(500A/ 5000A)

POWER
ON/ OFF

OK

Engage the BNC connector
grooves with the connector­guide projections, and turn the
connector clockwis e to loc k t he
components.

To remove the BNC connec­tor: Turn the connector coun-

terclockwise and pull it out.
Remove the sensor while

pressing both sides of the sen­sor connect or as shown in the
illustration.

If the sensor connector does
not move, check whether the

LOCK has been released.
Hold only one conductor at the

clamp center with the current
direction indictor pointing
toward the load side.
Securely push the tip of the
sensor into the sensor connec­tor.

If necessary, lock the sensor
connector.

Turn ON the power to the circuit
box. (default setting:5000 A)
Select the appropriate range
(500/5000 A) using the RANGE
button. If the power goes off
and then on again, the range
will always reset to 5000 A.

When using the AC adapter for
continuous monitoring, we rec­ommend that you also use bat­teries to prevent interruptions
due to instantaneous power
outages.
(If the AC adapter is not used
together with batteries, the
power goes OFF following an
instantaneous power outage.)

Sensor connector

LOCK

T o LOCK, t urn the
sensor in the
direction of the
LOCK mark until
you hear a click.

UNLOCK

Electric
conductor

L

O

A

D

S

O

U

R

C

E

Clamp the conductor.

3

Position the clamp with the current
direction indicator pointing toward the
load side. (If installed in the opposite
direction,the phase deviates 180
degrees.)

Current direction
indicator

Connect the BNC connector.

Connector
guide

BNC connector grooves

2

1

1

Lock

Open the sensor unit.

Cable

Sensor
connector

Remove

Sensor

1

2

Push

2

Turn the power on and
select range.

4

1

O

F

F

2

3

4

Necessary tool:
Precision Phillips screwdriver

1. Turn OFF the power to the
circuit box.

2. Turn the circuit box over and
use a Phillips screwdriver to
remove the two retaining
screws from the lower case.

3. Remove the upper case and
mount four new LR03 alkaline
batteries. Make sure the
polarity is correct.

4. Mount the upper case and
tighten the retaining sc rew s .

Upper case

Screws

Lower case

• If you pull out hard the lock­ing part of the Clamp sensor
connector, the locking part
might be dislodged.

• If this happens, reconnect
the connector so that the
current direction indicator
faces inside as shown in the
illustration. If the indicator is
faced outside, the current
direction indicator will indi­cate the opposite direction
to the actual measuring cur­rent.

Locking part

Clamp sensor connnector

Current direction indicator

MEMO

Measurement Procedures

Replacing the Batteries

• When disconnecting the BNC connector, be sure to release the
lock before pulling off the connector. Forcibl y p ul lin g th e c onn ec tor
without releasing the l oc k, or pu lli ng on the cable, can damage the
connector.

• To prevent damage to connected instruments, never connect or
disconnect the sensor while the power is on.

Attach the clamp around only one conductor. Single-phase (2-wire) or
three-phase (3-wire) cables clamped together will not produce any
reading.

• To avoid electric shock when replacing the batteries, first dis­connect the clamp from the object to be measured.

• During battery replacemen t, use ca ution not to put any foreign
materials such as a metal object into the circuit box to avoid
damage to the product.

• After replacing the batteries, replace the cover and screws
before using the product.

• Battery may explode if mistreated. Do not short-circuit,
recharge, disassemble or dispose of in fire.

• Handle and dispos e of batte ries in a ccord anc e w ith l oca l regu ­lations.

• Do not mix old an d new ba tteries, o r d if ferent types of b atteries. Al­so, be careful to observe batte ry po lari ty du ring installation . Ot her­wise, poor performance or damage from battery leakage could
result.

• To avoid corrosion and damage to this product from battery leak­age, remove the batteries from the p r odu ct i f it is to b e st ored for a
long time.

• After use, always turn OFF the power.

• If the power does no t go O N af ter re placi ng bat teries , the fu se ma y
be blown. In this case, do not attempt to replace the fuse or repair
the product. Contact your dealer or a HIOKI representative.

• When using an AC adapter, always use the optional 9445-02/03
AC Adapter.

Clamp Sensor Connector Lock System