Iwatsu SS-530 User manual

Instruction Manual
Current Probe
SS-530 / SS-531

Ⓒ2021 IWATSU ELECTRIC CO., LTD. All rights reserved．

Measurement Procedure
Be sure to familiarize yourself with the “Usage Notes”
section (p. 8), each instruction of use, and safety notes
presented at the beginning of each instruction of use.
Inspecting the Device Before Use (p. 26)
Preparing for Measurement (p. 28)
•Provide power to the device.
•Connect the termination unit to your waveform
measuring instrument.
•Execute demagnetization and automaticzero-
adjustment.
Measuring Currents (p. 41)
•Clamp the sensor around a conductor tobe
measured.
•Measure a current.
Finishing Measurement (p. 65)

Waveform measuringinstrument
H
L
Power source
Load
Model PS-54 Power
Supply
Connection Example
See “Example of connection to the circuit to be measured”
(p. 49).

CONTENTS
Introduction................................................................................1
Notations ....................................................................................2
Checking Package Contents.....................................................5
Safety Notes ...............................................................................7
Usage Notes ...............................................................................8
1 Overview.............................................................................13
1.1 Product Overview ...................................................................... 13
1.2 Product Features ....................................................................... 14
1.3 Name and Function of Each Part ............................................. 16
Termination unit ........................................................................ 16
Junction box (keys, LEDs) ....................................................... 18
Sensor ........................................................................................ 20
1.4 Specifications of Lighting Up / Blinking LEDs........................ 22
2 Current Measurement.........................................................25
2.1 Inspecting the Device Before Use............................................ 26
2.2 Preparing for Measurement...................................................... 28
Providing power to the SS-530/SS-531 ................................... 29
Executing demagnetization and
automatic zero- adjustment...................................................... 33
2.3 Measuring Currents................................................................... 41
How to measure a current ........................................................ 50
To measure a low current......................................................... 58
To measure a current accurately............................................. 60
When the device has entered protection mode...................... 62
2.4 Finishing Measurement............................................................. 65

3 Specifications.....................................................................69
3.1 General Specifications.............................................................. 69
3.2 Specifications of Input, Output and Mesurement................... 71
Basic specifications.................................................................. 71
Specifications of accuracy....................................................... 73
3.3 Specifications of Functionality................................................. 75
3.4 Typical Characteristics ............................................................. 77
Frequency characteristics........................................................ 77
Frequency derating curve ........................................................ 78
Input impedance........................................................................ 80
Consumption current................................................................ 81
Influence of common-mode voltage........................................ 82
4 Maintenance andService ...................................................83
4.1 Troubleshooting ........................................................................ 84
Before sending back your device for repair ........................... 85
4.2 Errors.......................................................................................... 88
Types of errors .......................................................................... 89
4.3 Cleaning...................................................................................... 96
4.4 Disposal...................................................................................... 97

1
Introduction
Introduction
Thank you for choosing the IWATSU SS-530, SS-530
Current Probe. To ensure your ability to get the most out of
this device over the long term, please read this manual
carefully and keep it available for future reference.
Each model offers a different frequency band listed below:
Model SS-530: DC to 50 MHz
Model SS-531: DC to 120 MHz
To obtain maximum performance from the device, please
read this manual first, and keep it handy for future reference.
Target audience
This manual has been written for use by individuals who use
the product in question or who teach others to do so.
It is assumed that the reader possesses basic electrical
knowledge (equivalent to that of someone who graduated
from the electrical program at a technical high school).

2
Indicates a high-voltage hazard.
Failure to verify safety or improper handling of the device
could lead to electric shock, burn injury, or death.
Notations
Notations
Safety notations
This manual classifies seriousness of risks and hazard
levels as described below.
DANGER
Indicates an imminently hazardous situation
that, if not avoided, will result in death or
serious injury.
WARNING
Indicates a potentially hazardous situation
that, if not avoided, could result in death or
serious injury.
CAUTION
Indicates a potentially hazardous situation
that, if not avoided, could result in minor or
moderate injury.
NOTICE
Indicates potential risks of damage to the
supported product (or to other property).
IMPORTANT
Indicates information or content that is
particularly important from the standpoint of
operating or maintaining the device.
NOTE
Indicates useful advice concerning device
performance and operation.

3
Indicates an action that must be performed.
Indicates that the device can only be used at a location
on an insulated wire with sufficient insulation for the
circuit voltage.
Indicates the presence of a potential hazard. For more
information about locations where this symbol appears
on device components, see the “Usage Notes” section
(p. 8), warning messages listed at the beginning of
operating instructions.
Notations
Symbols shown on the device
Symbols for various standards
Indicates an action that must not be performed.
Indicates that the product complies with standards
imposed by EU directives.
Indicates the Waste Electrical and Electronic Equipment
Directive (WEEE Directive) in EU member states.

4
Bold
Indicates the names of the control keys.
*
Indicates additional information is described below.
rdg.
Reading (Displayed value)
Indicates the value the measuring instrument
displays. Tolerances for reading errors are
expressed in percent of reading (% of reading,
% rdg).
Notations
Others
Accuracy
IWATSU defines tolerances for measured values in
terms of percentage of reading, as indicated below.
Revision History
•April 2021: 1st edition
KMLA00281

5
Checking Package Contents
Checking Package Contents
When you receive the device, inspect it to ensure that no
damage occurred during shipment. Pay particular
attention to keys and connectors. If you find any damage
or discover that the device does not perform as indicated
in its specifications, please contact your authorized
IWATSU distributor or reseller.
Check that the package contents are correct.
Model SS-530/SS-531 Current Probe·······1
Carrying case······································1
Instruction Manual ·······························1
Sheet for China RoHS···························1
Cable tie ·············································2

6
Checking Package Contents
Option
The option below is available for the device. Toorder an
option, please contact your authorized IWATSU
distributor or reseller.
Options are subject to change. Check IWATSU’s website for
the latest information.
Model PS-54 Power Supply
The PS-54 Power Supply can provide the power to up
to two probes of the SS-530/SS-531.
(The PS-52 Power Supply cannot be used as a
power supplying unit for the SS-530/SS-531.)
Precautions for transportation
•Store packaging materials for future use. You will need the
packaging materials when shipping the device.
•Transport the device in its carrying case.

7
DANGER
WARNING
Safety Notes
Safety Notes
The device has been designed in accordance with the IEC
61010 safety standard, and its safety has been verified by
means of testing prior to shipment. However, failure to follow
the information in this manual could render safety-related
functionality provided by the device ineffective.
Please review the safety information below before using the
device.
Read this manual carefully and ensure you
understand its contents before using the
device.
Improper use of the device could result in serious bodily
injury or damage to the device.
If using an electrical measuring instrument
for the first time, seek instruction from an
individual with electrical measurement
experience first.
Failure to do so may lead to electric shock, overheating,
fire, arcing due to a short-circuit, or other hazards.

8
DANGER
Usage Notes
Usage Notes
Be sure to follow the precautions listed below in order to use
the device safely and in a manner that allows it to function
effectively.
Use of the device should conform not only to its
specifications, but also to the specifications of all
accessories, options, and other equipment in use.
Do not use the device for measuring bare
conductors.
Take measurements at a location on an
insulated wire with sufficient insulation for the
circuit voltage.
Doing so may result in electric shock or a short-circuit.

9
DANGER
Usage Notes
Do not remove any covers of the sensor,
junction box, and termination unit.
The internal components of the device carry high
voltages and may become very hot during operation.
Touching them could cause electric shock or burns.
Do not connect the device to the primary side
of a distribution panel.
If a short-circuit occurs on the primary side, an
unrestricted current flow can damage the device
and facilities, resulting in serious bodily injury. Even
if a short-circuit occurs on the secondary side of the
distribution panel, the panel will interrupt the short-
circuit current.
Do not use the device in powerful magnetic
fields.
Doing so could cause the sensor to become abnormally
hot, resulting in bodily injury, damage to the device, or
fire.
Follow all operating precautions for a
waveform measuring instrument or any other
measuring instruments to which this device is
connected.
Failure to observe this could cause serious bodily injury
or damage to these instruments.

10
WARNING
Usage Notes
Do not use the device to measure circuits that
exceed the ratings or specifications of the
device.
Doing so could cause damage to the device or
overheating, resulting in bodily injury.
Do not install the instrument in locations such
as the following:
•In locations where it would be subject to direct
sunlight
•In locations where it would be subject to high
temperatures
•In locations where it would be exposed to corrosive
or explosive gases
•In locations where it would be exposed to water,oil,
chemicals, or solvents
•In locations where it would be exposed to high
humidity or condensation
•In locations where it would be exposed to powerful
electromagnetic radiation
•Close to objects carrying an electric charge
•In locations with an excessive amount of dust
•Close to inductive heating devices (high-frequency
inductive heating devices, IH cooktops, etc.)
•In locations characterized by a large amountof
mechanical vibration
•Close to HF power supplyunits
Doing so could cause damage to the device or causeit
to malfucntion, resulting in bodily injury.

11
CAUTION
WARNING
Usage Notes
Ensure that the insulation on the cords is
undamaged and that no bare conductors are
improperly exposed before using the device.
Any damage to the cords leads to electric shock.
Contact your authorized IWATSU distributor or reseller
for repair.
Do not place the device on an unstable stand
or angled surface.
Doing so could cause the device to fall or overturn,
resulting in bodily injury or damage to the device.
Properly connect the device to a circuit to
be measured and your waveform measuring
instrument.
Improperly connecting them could cause electric shock
or damage to the circuit, device, or your instrument.
Do not use for a prolonged period without
cleaning the inside.
If you use this instrument for a prolonged period
without cleaning dust inside, fire or malfunction may
result.
We recommend to order Iwatsu office or our sales
distributors for inside cleaning together with periodical
inspection and calibration once a year or so.

12
NOTICE
Usage Notes
Do not store or use the device in locations
subject to abrupt temperature changes.
Doing so could damage the sensor heads.
Do not apply force in the directions shown in
the figure below while the upper jaw is locked
in place.
Do not
apply force.
Opening lever position
when the upper jaw is
locked in place
Doing so may damage the retracting/extending
mechanism.
Keep the upper jaw locked in place when the
device is not in use.
Leaving the upper jaw unlocked will cause dust or dirt to
settle on the facing core surfaces, resulting in damage
to the device.

13
1 Overview
1.1 Product Overview
Model SS-530/SS-531 is a clamp-on current probe that
features high current-detection sensitivity and broad
frequency band. The probe uses three current ranges to
detect current waveforms from 1 mA to 50 A.
Youcan directly connect the termination unit to a BNC input
terminal of your waveform measuring instrument such as
an oscilloscope and recorder, and then clamp the sensor
around a conductor to be measured to observe current
waveforms easily.
Sensor (p. 20) Junction box (p. 18)
Termination unit (p. 16)
1

14
Product Features
1.2 Product Features
Clamp-on sensor heads (p. 21)
The clamp-on sensor heads allow current measurement
without the need to make physical contact with a
conductor to be measured or to disconnect it. You can
observe current waveforms while maintaining the flow of
electric current.
Sliding jaw retracting/extending mechanism (p. 21)
This feature lets you easily retract, extend, and lock the
upper jaw in place to clamp the sensor around a conductor
to be measured.
Easy-to-connect output terminal (p. 17, p. 38)
Insert the output terminal into a BNC input terminal on
your waveform measuring instrument to connect the
termination unit.
Warning LED lights (p. 18)
The warning LEDs alert you to an overload (indicating
that an input current value exceeds the rated current of
the device) or jaw-unlocked condition (indicating that the
upper jaw has not been locked in place).