9651
CLAMP ON SENSOR
Instruction Manual
Oct.2015 Revised edition8 Printed in Japan
9651A980-08 15-10H
Introduction
Overview
Inspection
Preliminary Checks
Safety
DANGER
This product is designed to conform to 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 product. 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.
Indicates cautions and hazards. When the symbol is
printed on the product, refer to a corresponding
topic in the Instruction Manual.
Indicates AC (Alternating Current).
Indicates a double-insulated device.
Indicates that the instrument may be connected to or
disconnected from a live circuit.
DANGER
Indicates that incorrect operation presents an
extreme hazard that could result in serious injury or
death to the user.
WARNING
Indicates that incorrect operation presents a
significant hazard that could result in serious injury
or death to the user.
CAUTION
Indicates that incorrect operation presents a
possibility of injury to the user or damage to the
product.
NOTE
Advisory items related to performance or correct
operation of the product.
Notes on Use
DANGER
To avoid short circuits and potentially life-threatening
hazards, never attach the clamp to a circuit that operates at
more than the 600V rms.
Clamp sensor 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.
WARNING
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.
Note that the product may be damaged if current exceeding
the selected measurement range is applied for a long time.
CAUTION
Do not store or use the product where it could be exposed 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.
To avoid damage to the product, protect it from vibration or
shock during transport and handling, and be especially careful to
avoid dropping.
NOTE
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.
Part Names
Jaws
Output connector
Cable
Ferrite core
Measurement Procedure
CAUTION
To avoid damaging the output cable, grasp the connector, not
the cable, when unplugging the cable.
To prevent damage to the product and sensor, never connect
or disconnect a sensor while the power is on.
Specifications
Conditions of
guaranteed accuracy
Guaranteed accuracy period :1 year
Guaranteed accuracy period after
adjustment :1year
Opening and closing of the jaws:10000
times or less
Accuracy guarantee for temperature
and humidity:23
±
5
(73
±
9 ), 80% RH or less
Rated primary current
500 A AC (f.s.)
Rated secondary current 500 mA AC
Secondary current
amplitude accuracy
1.5% rdg. 0.03%f.s.
(Regarding the accuracy: refer to the
specification of the each unit that you
use with this clamp on sensor)
(f.s. 500 A, 50 Hz/60 Hz, at the jaws
center)
Amplitude frequency
charactristics
Within 3% at 40 Hz to 1 kHz
(Deviation from accuracy)
Maximum input current
600 A continuous at 45 Hz to 66 Hz
Dielictric strength
7060 V rms AC (Sensitive current 1
mA),50 Hz/60 Hz, 1 minute, between the
jaws and the cable Output connector
Maximum rated voltage
to earth
Max. 600 V rms
Operating temperature
and humidity range
0
to 50
(32 to 122 ), Max. 80
%RH (no condensation)
Storage temperature
and humidity range
-10
to 60
(14
to 140 ), Max. 80
%RH (no condensation)
Location for use
Altitude up to 2000 m (6562 feet), Indoors
Standards applying
Safety EN61010 Measurement
Category III Pollution Degree 2
(anticipated transient overvoltage 6000
V)EMC E N61326
Diameter of measurable conductor
Within
φ
46 mm (1.81")
cable length
Approx. 3 m (118.11")
External dimensions
Approx. 78 W 152 H 42 D mm (2.8"
W 5.94" H 1.65" D) (excluding
protrusions)
Mass
Approx. 340 g (12 oz.)
Accessories
Instruction manual
Ma
ximu
m i
np
ut cu
rre
nt (
Ar
ms)
Frequency (Hz)
Figure 1
Maintenance and Service
Warranty
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.
Thank you for purchasing the HIOKI 9651 CLAMP ON SENSOR.
To obtain maximum performance from the product, please read this
manual first, and keep it handy for future reference.
The 9651 is current output type clamp on sensor, which is applicable
to 500A AC current measurements. The instrument can be used to
measure alternating current on a live power line without the need to
cut the wire. Easy operation and connection make them useful for
measuring alternating current and power in various fields.
When you receive the product, inspect it carefully If damage is
evident, or if it fails to operate according to the specifications,
contact your dealer.
Before using the product the first time, verify that it operates normally
to ensure that the no damage occurred during storage or shipping. If
you find any damage, contact your dealer.
Before using the product, make sure that the insulation on the cable
is undamaged and that no bare conductors are improperly exposed.
Using the product in such conditions could cause an electric shock,
so contact your dealer for repair.
Safety symbols
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.
The following symbols in this manual indicate the relative importance
of cautions and warnings.
Measurement categories
This product complies with CAT III 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. These are defined as follows.
CAT II: Pr imary 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: Pr imary electrical circuits of heavy equipment (fixed installations)
connected directly to the distribution panel, and feeders 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).
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 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.
Follow these precautions to ensure safe operation and to obtain the
full benefits of the various functions.
1. Connect the output connector to the clamp terminal of the unit.
2. Open the jaws, then clamp the conductor.
Make sure that only one conductor is in the jaws.
3. Make sure that the tip of jaws are fully closed.
Cleaning the unit
To clean the product, wipe it gently with a soft cloth moistened with
water or mild detergent. .
Service
If the product seems to be malfunctioning, contact your dealer.
Pack the product carefully so that it will not be damaged during
shipment, and include a detailed written description of the
problem. Dealer cannot be responsible for damage that occurs
during shipment.
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