Iwatsu SS-560 User manual

Current Probe
SS-560/570
Instruction Manual

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

Contents
Preface·································································· 1
Safety Precautions··················································· 1
Checking packed materials········································ 9
Components···························································10
Management of instrument ········································10
Repair and sending instrument to be repaired················10
Cleaning of instrument··············································10
1 Overview·····························································11
1.1 Current Probe···········································11
1.2 Features··················································11
1.3 Names of Parts·········································12
1.4 Part Functions ··········································12
2 Specifications·······················································15
2.1 Instrument Specifications (SS-560) ···············15
2.2 Certification Standards (SS-560) ··················16
2.3 Instrument Specifications (SS-570) ···············18
2.4 Certification Standards (SS-570) ··················19
3 Measurement Procedure ········································21
3.1 Notes on Use ···········································21
3.2 Preparations for Measurement ·····················22
3.3 Demagnetizing and Zero Adjustment·············23
3.4 Measurement Procedure ····························24
Appendix ·······························································30
Appendix 1 Recommended power supply
and oscilloscope ············································30

Memo

1
Preface
◇Thank you for purchasing the Current Probe SS-560/570. We hope that
you will enjoy it for years to come.
◇Please read this manual carefully before attempting to use the
instrument. Store the manual in a safe place so it can be referred to
when necessary.
Safety Precautions
This manual contains information and warnings essential for safe operation
of the instrument and for maintaining it in safe operating condition. Before
using the instrument, be sure to carefully read the following safety notes.
• The symbol printed on the instrument indicates that the
user should refer to a corresponding topic in the manual
( marked with the symbol ) before using the relevant.
• In the manual, the symbol indicates particularly
important information that the user should read before using
the instrument.
• Indicates that the instrument cannot be set and detached in
the active circuit.
The following symbols in this manual indicate the relative importance of
CAUTION and WARNING.
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 instrument.
Indicates advisory items related to performance or correct
operation of the instrument.

2
Note
◇The contents of this manual are subject to change without any prior
notice for improvement or other purposes.
◇Unauthorized reproduction of the contents of this manual is strictly
prohibited.
◇If you have any questions about this instrument, contact IWATSU or our
sales distributors.
Revision history
◇April 2021: 1st edition
KMLA00301

3
Read this page to ensure proper safety. (to be continued)
WARNING
•Do not use this instrument in an environment with
explosive gases.
This may result in explosion.
•If you notice smoke, foul odor or abnormal noise,
immediately turn off the power supply of all equipment with
which this instrument is connected, and then detach this
instrument from the insulated target conductor to be
measured.
Continued use under these circumstances may result in electric
shock or fire. Contact IWATSU or our sales distributors for repair. Do
not attempt to repair this instrument yourself.
•Turn off the power to the insulated target conductor to be
measured before attaching or detaching sensor head part
of this instrument to or from the insulated target conductor
to be measured.
Failure to do so is very dangerous for targets to be measured that
use high current.
• Do not use this instrument to measure exposed conducting
lines.
This may result in electric shock, short-circuiting or equipment
damage. (The clamp core and shield casing are not insulated.)
•Use caution not to wet this instrument or allow entry of
water or foreign objects into.
Continued use under these circumstances may result in an electric
shock, fire, or failure. If water, foreign objects, or other substances
enter this instrument or the instrument is wet with water, immediately
turn off the power supply of all equipment with which this instrument
is connected, and then detach this instrument from the insulated
target conductor to be measured. After that, contact IWATSU or our
sales distributors for repair.
•Do not handle this instrument if your hands are wet.
This may result in electric shock, fire or equipment damage.
• Do not touch the plug of the power cord if your hands are
wet.
This may result in electric shock.

4
Read this page to ensure proper safety. (to be continued)
WARNING
•Be careful not to damage the insulated sheath of the
insulated target conductor to be measured.
•Make sure the oscilloscope connected to the BNC output
connector on the current probe is used with the protective
earth.
See "Recommended Power Supply and Oscilloscope" of the
appendix in the end of this manual for the instrument of our
company that corresponds to this.
•Connect only the recommended power unit to this
instrument.
Use of power units not suited may result in fire or equipment
damage. See "Recommended Power Supply and Oscilloscope" of
the appendix in the end of this manual for the recommended power
supply of our company.
•When handling power cables and sensor cables:
This may result in fire, electric shock or equipment damage. If the
power cord is damaged, contact IWATSU or our sales distributors for
repair.
⋅Do not attempt to fabricate power cord and sensor cable.
⋅Do not pull power cord and sensor cable by the cable. Always
grasp the plug.
⋅Do not bend power cord and sensor cable.
⋅Do not heat power cord and sensor cable.
⋅Do not twist power cord and sensor cable.
⋅Avoid getting power cord and sensor cable wet.
⋅Do not bind power cord and sensor cable together.
⋅Do not place heavy objects on top of power cord and sensor
cable.
•Do not place this instrument in an area there frequent
vibrations or impacts occur.
If this instrument is dropped or overtuned, it may cause a physical
injury or a malfunction.

5
Read this page to ensure proper safety. (to be continued)
WARNING
•Do not use this instrument in a highly humid environment
where condensation may occur.
If using, an electric shock, fire, or failure may occur.
•When thunder begins, pull out the power plug of a device or
the AC adaptor to which this instrument is connected from
the outlet. Then, detach this instrument from the target to
be measured, and do not use it.
Lightning may be a cause of an electric shock, fire, or failure.
•Do not put on this instrument a container that water,
medicine, etc. has entered or a small metallic object.
If not, an electric shock or fire may occur. If this instrument is wet with
water, or metal and other objects enter the instrument, immediately
turn off the power supply of all equipment with which this instrument
is connected, and then detach this instrument from the insulated
target conductor to be measured. After that, contact IWATSU or our
sales distributors for repair.
•Do not put any metallic or flammable foreign object through
the ventilation port.
If any metallic or flammable foreign object is put through the
ventilation port, this may cause a fire, an electric shock, or a
malfunction.
•Do not use this instrument when it has failed.
Using a failed main unit or, cable or AC adaptor may be a cause of
an electric shock or fire. In the event of a failure, contact Iwatsu
office or our sales distributors for repair.
• Do not attempt to modify or disassemble the unit.
This may result in electric shock, fire or equipment damage.
Requests to repair the unit may be refused if unauthorized
modifications have been made.
•Do not use this instrument when the case of it has been
damaged.
This may result in electric shock. When the case is damaged,
contact IWATSU or our sales distributors for repair.

6
Read this page to ensure proper safety. (to be continued)
WARNING
•Do not place any object close to the ventilation port of this
instrument.
If any object close to the ventilation port of this instrument, the air
ventilation is blocked and the internal temperature increases,
causing a fire or malfunction.
•The BNC ground of this instrument is connected to an
electric ground through the power supply such as PS-52 or
PS-54 to prevent danger. Use the equipment only for the
floating measurement when executing the floating
measurement.
When the ground terminal of the instrument is connected to a
ground besides the earth potential, this instrument, the equipment
and the circuit to be measured must be damaged because the
equipment that connects this instrument is connected to a ground.
Moreover, there must be danger of getting an electric shock.
•Insert the power plug in the outlet after confirming dust etc.
do not adhere. The power supply plug are pulled out from
the outlet, and moreover, please check and clean it once a
year from half a year.
The dirt causes electric shock, a fire or damage.
•This instrument SS-560 and SS-570 might not be able to be
used at the same time because there are restrictions on
power consumption in the probe power on the oscilloscope
side according to the measured current.
Refer to page25 and page30 for details.
Wrong example
Oscilloscope etc.
Power supply
This instrument
Current probe

7
Read this page to ensure proper safety. (to be continued)
CAUTION
•Do not supply current that exceeds the maximum
continuous input range.
The values are derived from the rise in temperature caused when
the unit heats up during measurement. Do not input the current that
exceeds this. This instrument might be damaged. Moreover, the
maximum input range differs depending on the frequency of the
current being measured. See Section 2.1 or 2.3 "Instrument
Specifications".
•When current exceeding the maximum continuous input
range is supplied, the sensor unit will heat up, triggering an
internal protective interlock that will prevent normal output.
If this happens, cut off the input immediately (either by removing the
sensor from the insulated target conductor to be measured or by
setting the input current to zero). Then wait for a sufficient amount of
time for the unit to cool before resuming normal operation.
•At high temperatures, the overcurrent protection circuit in
the unit may cause the protective interlock to operate at
current levels that are below the maximum continuous
input range.
•Do not subject the unit to sudden rapid changes in
temperature, mechanical stress or shocks.
This may damage the instrument and the sensor head and result in
equipment failure.
•Keep the sensor head closed unless you are clamping the
insulated target conductor to be measured in preparation
for measurement.
Leaving the sensor head open may damage the sensor head.
•When handling the sensor head, be sure to observe the
following precautions:
･
The contact end of the sensor head is precision-polished. Handle
the unit carefully to avoid damaging this surface. Scratches on the
surface may adversely affect performance.
･
The end of the sensor head must be kept clean, as dirt on the
surface will adversely affect performance. If the surface becomes
dirty, wipe it clean with a soft cloth or the like.

8
Read this page to ensure proper safety. (to be continued)
CAUTION
•When removing the connector from the power supply
receptacle, first unlock the connector, grasp the connector
and pull to remove.
Failure to remove the connector in this manner may damage the
terminator.
•Do not store or use this instrument in direct sunlight or in
environments that are subject to high temperatures, high
humidity or condensation.
Use or storage at other than the rated conditions may result in
warping due to heat, impaired insulation, or unit failure.
The proper temperature and humidity levels for use and storage are
listed below. Note that these environments should also be free from
condensation.
⋅Operating temperature: 0 to +40°C, no dew condensation
⋅Operating humidity: below the moisture amount of 80%RH
⋅Storage temperature: -10 to +50°C, no dew condensation
⋅ Storage humidity: below the moisture amount of 80%RH
•Do not leave this instrument in wet or dusty environments.
This may result in electric shock, fire or equipment damage.
•For your safety, when this instrument is not used for a long
time, remove the power plug of this instrument from the
power supply receptacle.
•Do not leave this instrument in a place exposed to lamp
soot or steam generated by counters, humidifiers, etc.
If not, an electric shock, fire, or failure may occur.
•Hold the power plug part when removing the power supply
cord from the power supply receptacle.
Pulling on the power cord will damage the cord. This may be a
cause of an electric shock, fire, or failure.
•For your safety, remove the power plug of this instrument
from the power supply receptacle, make sure that the
sensor head, output terminal (BNC) cable and other external
connection lines are removed before maintenance. In
addition, wipe off with a dry cloth when water droplets are
attached.
If not, an electric shock or failure may occur.

9
Read this page to ensure proper safety.
CAUTION
•Securely insert power plug into the power supply
receptacle.
•Before moving this instrument, make sure that the power
supply plug is disconnected from the power supply
receptacle and that the sensor head, output terminal (BNC)
cable and other external connection lines are removed.
Failure to do so will damage the sensor head or cable, causing
an electrical shock, fire, or failure.
•Before transporting this instrument, house this instrument
in the accessory hard case, and then pack the housed
instrument in the packing material used at the time of
purchase, or the packing material or better.
This instrument may fail if a large vibration or impact is applied
during transportation, possibly causing a fire. If you do not have a
proper packing or shock-absorbing material for transportation,
contact IWATSU or our sales distributors. If transportation is to be
handled by a forwarding agent, display "Contains a precision
machine" on each side of the packing box.
•We recommend to order IWATSU or our sales distributors for
periodical inspection and calibration once a year or so.
Note
An accurate measurement cannot be likely to be done in the vicinity
the generation of a strong magnetic field and strong electric fields
such as the transformer, the large current circuits, and the wireless
machines.
Checking packed materials
When receiving this instrument, check the packed materials while
referring to the next page “Components”. If there is a missing item or
an item damaged during transportation, immediately contact IWATSU
or our sales distributors.

10
Components
Current Probe SS-560/570 …………..1
Accessories (See the accessories table below.)
Accessories table
Management of instrument
When disposing of this instrument, it must be recycled or disposed of
properly in accordance with local laws or regulations. When disposing
of it, request a recycling company to dispose of it in accordance with
local laws or regulations.
Repair and sending instrument to be repaired
If a failure occurs, send the instrument to IWATSU or our sales
distributors.
When sending an instrument to be repaired, clearly write the
instrument name, serial number (in the label on the rear of this
instrument), description of the failure, and the name, division, and
telephone number of the responsible person.
Cleaning of this instrument
When you take the dirt of this instrument, wipe with a soft and dry
cloth or wipe with a dry cloth after you wipe with a soft cloth etc. to
contain water, and the soapless soap.
Never use neither medicines of thinner, benzine, acetone, ether,
ketone, alcohol, and the gasoline system, etc. nor the detergents
that contain them.
This instrument is likely to transform, and to discolor.
Items Quantities
Hard case 1
Sheet for China RoHS 1
Instruction Manual (this document) 1
Cable tie 1

1 Overview
11
1 Overview
1.1 Current Probe
This instrument can be directly connected to a BNC input connector of
a waveform measuring instrument such as an oscilloscope or recorder,
and by clamping on an insulated target conductor to be measured,
allows the current waveform to be easily captured.
1.2 Features
•Highly accurate current detection
•Easy current measurement
•Broadband frequency bandwidth
SS-560 : DC to 10 MHz
SS-570 : DC to 2 MHz
•Large diameter allows high-current measurements.
•Simple protection function to avoid self-heating during excessive
input
•Unique development by using thin film Hall element

1 Overview
12
1.3 Names of Parts
• External view
1.4 Part Functions
1. Clamp
This clamps around the insulated target conductor to be measured.
2. Slider
This slider opens the clamp. Always use it to open and close the
clamp.
3. Lever
This lock mechanism keeps the clamp closed.
4. Sensor head
This clamps the insulated target conductor to be measured, and
carries out the actual current measurement. It is a precision
assembly including a molded component, a ferrite core, and a Hall
element. It may be damaged if subjected to sudden changes in
ambient temperature, or mechanical strain or shock, and therefore
great care should be exercised in handling it.
5. Barrier
This structure reduces the likelihood of touching the conductor while
testing, and indicates the limit of safe physical contact.
Avoid touching the clamp in front of the barrier when clamping or
measuring.

1 Overview
13
6. Demagnetizing switch (DEMAG)
This can demagnetize the core if it has been magnetized by
switching the power on and off, or by an excessive input. Always
carry out demagnetizing before measurement.
Moreover, the demagnetizing process takes about 3 second. During
demagnetizing, a demagnetizing waveform is output.
7. Zero adjustment dial (ZERO ADJ)
Use the zero adjustment dial to correct for the effect of a voltage
offset or temperature drift on the instrument.
When beginning measurement, after demagnetizing always carry
out zero adjustment
8. Output connector
The current waveform of the measured conductor is output at a
constant rate (0.01 V/A).
Connect to the BNC input connector of the waveform measuring
instrument.
•The output of this instrument is terminated internally. Use
the waveform measuring instrument with high impedance
input. With an input impedance of 50 Ω, accurate
measurement is not possible.
•If using BNC-banana plug adapters or similar to connect to
input terminals other than BNC connectors, make sure the
polarity is correct.
•Turn the collar of output connector until it clicks, and check
that it is locked securely.
9. Power plug
Connect this to the power receptacle of PS-52 or PS-54 POWER
SUPPLY to supply power to the sensor part or the terminator part.

1 Overview
14
Memo

2 Specifications
15
2 Specifications
2.1 Instrument Specifications (SS-560)
The following values indicate unit performance 30 minutes after the power
has been turned on in an ambient environment of 23°C ±3°C and below
the moisture of 80 %RH (no dew condensation).
Bandwidth DC to 10 MHz (-3 dB)
(Typical characteristics shown in Fig.1)
Rise time 35 ns or less
Maximum continuous
input current range
150 Arms
(Derating according to frequency shown in Fig.2)
Maximum peak
current value
Non-continuous 300 Apeak
500 Apeak at pulse width ≤30 μs
Output voltage rate 0.01 V/A
Amplitude accuracy
To 150 Arms: ±1.0 % rdg. ±1 mV
150 Arms to 300 Apeak: ±2.0% rdg.
(DC or 45 to 66 Hz)
Noise Equivalent to 25 mArms or less
(for measuring instrument with 20 MHz bandwidth)
Input impedance (Typical characteristics shown in Fig.3)
Temperature characteristic
of sensitivity
± 2 % or less
(Input: 55 Hz, 150 Arms, within a range of 0 to 40 °C)
Maximum power
consumption
5.5 VA or less
(within maximum continuous input range)
Rated power supply
voltage DC ± 12 V±1 V
Operating temperature
range 0 to 40 °C (no dew condensation)
Operating humidity
range Below the moisture of 80 %RH
Storage temperature
range -10 to 50 °C (no dew condensation)
Storage humidity range Below the moisture of 80 %RH
Location for use Indoor, altitude up to 2000 m, Pollution Degree 2
Accuracy warranty
period
1 year (Opening/Closing up to 10,000 times)
Product warranty period
1 year
Effect of external
magnetic fields
Equivalent to a maximum of 150 mArms
(in DC or 60Hz and 400 A/m of AC magnetic field)

2 Specifications
16
Measurable conductor
Only for Insulated target conductor
Diameter of measurable
conductors φ20 mm or less
Cable or cord lengths
Sensor cable: 2.0 m ±0.1 m
Power cord: 1.0 m ±0.1 m
External dimensions Sensor part:
176(W) X 69(H) X 27(D) mm (±2 mm)
Terminator part: 27(W) X 55(H) X 18(D) mm (±2 mm)
Weight 500 g ±20 g
Accessories Hard case (1), Instruction manual (1),
Sheet for China RoHS (1), Cable tie (1)
2.2 Certification Standards (SS-560)
Safety EN61010-2-032
EMC EN61326-1