NoiseKen LSS-720B2 User manual

INSTRUCTION MANUAL
LIGHTNING SURGE SIMULATOR
MODEL LSS-720B2 (240V)
NOISE LABORATORY CO., LTD. 1.03 edition
AEE00605-00E-0

NOTICE
•The contents of this instruction manual（the “Manual”）are subject to change
without prior notice.
•No part of the Manual may be reproduced or transferred, in any form and for
any purpose, without the permission of Noise Laboratory Co., Ltd.
•The contents of the Manual have been thoroughly examined. However,
if you find any problems, misprints, or missing information, please
contact the dealer where you purchased your product (the “Dealer”)
•Noise Laboratory Co., Ltd.(the “Company”) will not accept any responsibility for
any loss or damage resulting from improper usage, failure to follow the Manual,
or any repair or modifications of this product (the “Unit”) undertaken by a third
party other than the Company or parties authorized by the Company.
•The Company will not accept responsibility for any loss or damage resulting
from remodeling or conversion solely undertaken by the user.
•In addition, please note that the Company cannot be held responsible for any
consequences arising from the use of this product.

1
1. IMPORTANT SAFETY PRECAUTIONS
The following instructions are very important for safe handling of the Lightning surge simulator
LSS-720B2 (hereinafter “the Unit”).
They must be kept strictly to prevent users of the Unit from receiving harm or damage through
using the Unit. Read them carefully before use.
⚫The instrument may only be used by trained EMC technicians
(electrical technicians)
There is a risk of death or serious injury, and of the emission of
electromagnetic noise that exceeds the stipulated limits. Use the instrument
in conjunction with appropriate measures for dealing with electromagnetic
noise such as a Faraday cage or shielded room.
⚫Do not use the instrument for any purposes other than the
EMC testing purposes described in this instruction manual
Failure to follow this rule risks death or serious injury.
⚫The instrument may not be used by people fitted with
electronic medical devices such as pacemakers and such
people may not enter the testing site while the instrument is
operating
Failure to follow this rule risks death or serious injury.心臓用ペースメー
カー等の電子医療器具を付けた人は、本試験器を操作しないよう
にし、且つ本試験器が動作中に試験区域へ立ち入る事もしないで
ください。
⚫The instrument may not be used in a location where fire is
prohibited or there is a risk of explosion
Failure to follow this rule risks igniting a fire due to an electrical discharge.
Before setting up the test site, connecting the equipment, or
starting testing, please read the Chapter entitled "Basic Safety
Precautions" which contains additional safety advice.

2
Memorandum

3
2. APPLICATION FORM FOR INSTRUCTION MANUAL
We place an order for an instruction manual.
Model: LSS-720B2 (240V)
Serial No.:
Applicant:
Company name:
Address:
Department:
Person in charge:
Tel No.:
Fax No.
Cut off this page "APPLICATION FORM FOR INSTRUCTION
MANUAL" from this volume and keep it for future use with care.
When an INSTRUCTION MANUAL is required, fill in the above application form
and mail or fax it to your nearest sales agent or Noise Laboratory Co., Ltd. directly.
To: Noise Laboratory Co., Ltd.
1-4-4 Chiyoda Chuo-ku Sagamihara City,
Kanagawa Pref., 252-0237 Japan
Tel: [phone] Fax: [phone]
Dealer:
Cut Line
Cut Line

4
Memorandum

5
3. CONTENTS
1. IMPORTANT SAFETY PRECAUTIONS ................................................ 1
2. APPLICATION FORM FOR INSTRUCTION MANUAL ..................................... 3
3. CONTENTS.................................................................... 5
4. PREFACE .................................................................... 7
5. BASIC SAFETY PRECAUTIONS .................................................... 8
5-1. SIGN OF DANGER AND ITS MEANING .................................................. 8
5-2. FUNDAMENTAL SAFETY PRECAUTIONS .................................................. 8
5-3. NECESSARY STEPS TO BE TAKEN WHEN CAUTION OR WARNING LABEL IS MISSING .................. 11
6. OUTLINE OF TESTING......................................................... 12
7. MAIN UNIT AND ACCESSORIES .................................................. 13
8. FUNCTION OF EACH PART ...................................................... 14
8-1. NAME OF EACH PART ........................................................... 14
8-2. FUNCTION OF EACH PART ........................................................ 15
9. SPECIFICATIONS............................................................. 18
10. PRECAUTIONS ON OPERATION .................................................. 19
11. TEST AND OPERATION PROCEDURES ............................................. 20
11-1. APPLYING 1.2/50ΜS VOLTAGE SURGE DIRECTLY TO EUT ................................ 20
11-2. APPLYING 8/20ΜS CURRENT SURGE DIRECTLY TO EUT .................................. 23
11-3. APPLYING VOLTAGE SURGE BY USING THE BUILT-IN POWER LINE INJECTION CIRCUIT ............. 24
11-4. APPLYING CURRENT SURGE BY USING THE BUILT-IN POWER LINE INJECTION CIRCUIT ............. 26
12. VERIFICATION OF SURGE WAVEFORMS ........................................... 27
12-1. VOLTAGE SURGE AT THE VOLTAGE CHECK CONNECTOR (1.2/50ΜS) ......................... 27
12-2. CURRENT SURGE AT THE CURRENT CHECK CONNECTOR (8/20ΜS) ........................... 27
12-3. VOLTAGE SURGE AT THE HOT TERMINAL ............................................. 28
12-4. CURRENT SURGE AT THE HOT TERMINAL ............................................. 29
INFORMATIVE：The definition of surge waveforms ................................. 30
13. PRINCIPLE OF PULSE GENERATION ............................................. 31
14. BLOCK DIAGRAM............................................................. 32
15. WARRANTY.................................................................. 33
Servicing terms ................................................................ 33
Limited warranty ............................................................... 34
16. MAINTENANCE............................................................... 35
17. NOISE LABORATORY SUPPORT NETWORK .......................................... 36

6
Memorandum

7
4. PREFACE
This instruction manual provides all necessary information for fully utilizing the Lighting Surge
Simulator Model: LSS-720B2 (hereinafter “the Unit”) including the procedures of operation and
testing.
Before operating the simulator, please read the manual carefully and master how to handle it for
enjoying 100% of the performance.
Features
⚫Can perform voltage surge test (1.2/50μs) specified under JEC-210・212 standard. (JEC:
JAPANESE ELECTRO-TECHNICAL COMMITTEE)
⚫Can perform current surge test ( 8/20μs) specified under JEC-210・212 standard.
⚫High voltage/current tests up to 20kV and 4000A.
⚫Surges can be readily superimposed on an active AC line and can be output from the surge out
terminal to conduct non-electrified test.
⚫Output voltage / current can be checked during test at the check terminals.
⚫Setup status can be observed through a transparent acrylic door.
⚫Housed in movable caster cabinet to allow free mobility to a location near the equipment under
test.
⚫This Instruction Manual was prepared so that any person who can
observe the prescribed instruction method and operating precautions
may safely handle and fully utilize this lightening surge simulator
(Model LSS-720B2).
⚫Keep this Instruction Manual by your side or other proper location so
that it may be readily available when using the LSS-720B2.

8
5. BASIC SAFETY PRECAUTIONS
5-1. Sign of Danger and its Meaning
It expresses a DANGER.
WARNING indicates an urgent hazardous
situation which, if not avoided, could result in
death or serious injury
It expresses a WARNING.
WARNING indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
It expresses a CAUTION.
CAUTION indicates a potentially hazardous
situation which, if not avoided, may result in
minor or moderate injury.
5-2. Fundamental Safety Precautions
1. This simulator generates high voltage and large current (20kV, 4000A max).
Mishandling or careless operation may cause a deadly injury.
【Warning against human body, environments, operation and connection】
2. This simulator is 20kV/4000A MAX specification. Never place the unit for a
long time with the voltage/current meter reading an exceeding value (red
zone).Never set the output voltage/current exceeding the mentioned value.
【Warning against human body and connection】
3. This simulator cannot be used in an explosive area, fire prohibited area, etc.
Use of this simulator in such an area is liable to cause ignition by discharge.
【Warning against human body and environments】
4. A person who has a pacemaker on should not operate this simulator and also
should not enter the area where this simulator is operating.
【Warning against human body and operation】
5. Test facilities using this simulator should be insulated and protected against
a minimum of 20kV. EUT tests using this simulator should be performed
within a protective enclosure proof, such as a safety box or a safety fence,
against scattering broken pieces, fire and electric shock.
【Warning against human body, operation and environments】
6. When connecting accessories and optional units for setting test waveforms
and test conditions or when connecting to other equipment, turn off the high
voltage circuit of this simulator (by pressing the HIGH VOLTAGE OFF switch)
beforehand. Otherwise, you may receive an electric shock.
【Warning against human body and connection】

9
7. Take care of surge and electric shock which may occur by power supply to
EUT while the simulator is operating.
【Warning against human body and operation】
8. Be sure to ground FG (Frame Ground) terminal of this simulator.
(A ground plane can be used.)【Warning against human body and connection】
9. Do not connect a connecting bar, cable, etc. to any terminal which is
unnecessary for setting test conditions. Do not mistake the setting and
connection of connecting bars, cables, etc. Otherwise, you may receive an
electric shock from high voltage or the internal equipment and connected
equipment may be damaged.
【Warning against human body, operation and connection】
10. When lowering the set voltage of this simulator by means of SURGE ADJ
Knob, discharge extra energy beforehand; otherwise causing danger. (High
voltage accumulated in the internal condensers etc. will not lower even if you
rotate the knob, unless high voltage is discharged.) There are 2 ways of
discharging extra energy in this case: one is rotating SURGE ADJ knob
counterclockwise fully to ‘0V(0A)’and turning off the high voltage circuit (by
pressing HIGH VOLTAGE OFF switch). The other is with rotating SURGE ADJ
knob counterclockwise gradually pressing the Trigger switch or External
trigger switch several times while seeing the meter until it reads the intended
set value. In this method, pay fully attention to surge output coming from
HOT (SURGE OUT) terminal or LINE OUT terminal which is being output as
the surge indicator indicates.
【Warning against human body and operation】
11. (Discharge will be finished by opening the acrylic door by means of the safety
device.) However, when changing the connecting bar set position to change the
waveform, changing the surge polarity and/or ending the test, be sure to
short-circuit between each terminal and GND terminal (for about 5 seconds)
using the supplied Discharge probe beforehand. If this discharging process is
insufficient, you may receive an electric shock from residual high voltage.
【Warning against human body, operation and connection 】
12. The AC line for EUT is free from the devices for safety such as HIGH VOLTAGE
OFF switch or the acrylic door. It can be operated independently with using the
LINE ON breaker. When you set the surge injection part, be sure to turn off the
LINE ON breaker to cut off AC power supply and discharge residual electricity
with the attached Discharge probe, and then set that part. Failure to follow this
instruction risks an electric shock by the power supply to EUT (AC100V~240V).
【Warning against human body, operation and connection 】
13. When operating this simulator, never neglect to watch the equipment. When
leaving this simulator, be sure to check that the meter reads ‘0V(0A)’and the
high voltage circuit is turned off (by pressing the HIGH VOLTAGE OFF Switch).
Otherwise, any other person or facilities related to test equipment may be
exposed to danger.
【Warning against human body, operation and environment】

10
14. As high voltage is generated inside the unit, do not open the cover of this
unit.
【Warning against human body】
15. When conducting an AC line injection test using this simulator, turn off
power supply to EUT and the LINE ON breaker located on the viewing window
frame of this simulator before connecting this simulator to EUT and to line
input cable.
【Warning against human body and connection】
16. The GND line of the attached Single-phase LINE IN cable is for protective
earth. When EUT needs to be grounded, it is grounded via the injection part
of this simulator with connecting the GND line.
【Warning against human body and connection】
17. Securely connect the connectors and cables. Otherwise, you may receive an
electric shock from high voltage or the internal components and equipment
connected to this simulator may be damaged.
【Warning against human body and connection】
18. For assuring safety operation, use the standard and optional accessories
supplied by our company.
【Warning against human body and connection】
19. When this simulator is not used, remove the supplied Switch key and keep it
in a safe place.
20. Our company and sales agent shall have no responsibility for any accident
resulting in injury or death, any breakage or resultant damages due to
irresponsible handling.
【Warning against human body, environment and connection】
21. Avoid using or storing this simulator in a high temperature or low
temperature environment. (Operating temperature: 15～35℃)
【Cautions regarding environment】
22. Use the simulator in the places with high humidity and free from dust and
vibration. (Operating humidity: 25～75%)
【Cautions regarding environment】
23. If dewing or condensation occurs, thoroughly dry it before operating the unit.
【Cautions regarding environment】
24. When installing the unit, do not block the ventilating hole.
【Cautions regarding environment】

11
25. When connecting accessories and optional units for setting test waveforms
and test conditions or when connecting to other equipment, turn off
operating power supply to this simulator beforehand. Otherwise, the
simulator or optional unit may be damaged.
【Cautions regarding connection】
26. The voltage value of the power supply which drives this simulator is AC240V.
A caution label indicating operating power supply voltage is affixed to the AC
input connector section on the rear panel of this simulator. Use within a
range of ±5%. Avoid applying voltage exceeding this range.
【Cautions regarding connection】
27. GND terminal on the front side of this simulator is the GND terminal for surge
tests. FG terminal provided on the rear side is the ground terminal for the
control system of this simulator. Be sure not to use GND terminal and FG
terminal.
【Cautions regarding connection】
28. Do not connect AC line directly to HOT (SURGE OUT)terminal. Otherwise, the
internal component of this simulator may be damaged.
【Cautions regarding connection】
29. When an EUT test is performed using this simulator, much electromagnetic
waves are emitted, adversely affecting the neighboring electronic equipment
and radio communication. The user should take a proper measure such as a
shield room, shielding cable, etc. to prevent such harmful phenomena.
【Cautions regarding environment】
30. Avoid dropping the unit or do not give excessive shock to it.
【Cautions regarding environment】
31. When repair, maintenance or internal adjustment is required, it should be
performed by a qualified service engineer.
32. Do not wipe this unit with thinner or similar solvent. When the body is dirty,
soak a cloth in detergent, squeeze the cloth and wipe the body with it.
5-3. Necessary steps to be taken when caution or warning label is missing
1. When the caution or warning label is peeled off, missing or dirty, attach a new one
for securing safety.
2. When the caution or warning label is missing, ask the sales department or
maintenance section of our company to send a new label.

12
6. OUTLINE OF TESTING
Problems of damages and malfunctions of digital equipment have been closed up in recent
years as control systems have become diversified. Primary causes of damages and
malfunction are largely classified into the degradation of power supply environments and
discharge of static electricity.
Induced lightening on power line transmission/distribution lines is the most representative
phenomenon, causing damages or malfunctions of electronic equipment. As the energy of
lightening is very big, even though electro equipment is not lightened directly, the equipment
can be damaged or malfunctioned with degradation of power supply environments caused
indirectly by induced lightening induced to power lines.
It is very difficult to reproduce this phenomenon by a test. Test method differs according to
where the equipment is placed. The test method meeting the installation conditions must be
decided upon after taking into account the dimensions and grounding conditions of equipment.
The test methods are largely divided into two—voltage surge test and current surge test.
For deciding the test method, the value of grounding impedance of the place where the EUT is
installed can be a basis of decision-making. Generally, in case the grounding impedance is
high, conducting voltage surge test only is sufficient, but in case it is low, current surge test is
also necessary.
Configuration and test method of both tests are prescribed in the standard JEC-210 and
JEC-212. For details, refer to those standards.

13
7. MAIN UNIT AND ACCESSORIES
Fig.1
Quantity
A：Main unit ·························································································1
B：AC cable ·························································································1
C：Single-phase LINE IN cable·································································1
D：Ground cable····················································································1
E：LINE OUT cable················································································2
F ：Surge output cable ············································································1
G：External trigger switch········································································1
H：Warning lamp···················································································1
I ：CHECK connector plug ······································································1
J ：Connection bar·················································································6
K：Discharge probe················································································1
L ：Fuse (20A)·······················································································2
M：Switch key ·······················································································2
N：Interlock connector············································································1
O：Instruction manual·············································································1
P：Accessory bag··················································································1
Q：FG cable ·························································································1
A
B
C
D
BLACK
E
RED
F
G
H
I
J
K
L
M
N
O
P
Q
N

14
8. FUNCTION OF EACH PART
8-1. Name OF Each Part
Fig. 2
①POWER switch ⑯SURGE INJECTION PHASE SELECTOR
②POWER on indicator ・Surge injection phase selector
③HIGH VOLTAGE ON switch common terminal(R-S CHANGE)
(Alarm buzzer switch) ・Surge injection phase selector
④HIGH VOLTAGE OFF switch PHASE R terminal
⑤SURGE ADJ knob ・Surge injection phase selector
⑥SURGE Voltage/Current indicator PHASE S terminal
⑦MANUAL trigger switch ・SG terminal
⑧External trigger switch connector ・LINE OUT PHASE R terminal
⑨Voltage check connector (V-CHECK) ・LINE OUT PHASE S terminal
⑩Current check connector (A-CHECK) ⑰LINE ON breaker
⑪HOT SURGE OUT terminal ⑱LINE ON lamp
⑫POLARITY selector ⑲LINE IN connector
⑬METER selector ⑳FG terminal
⑭Output waveform selector
21
Warning lamp connector
⑮GNDSG Terminal
22
Safety interlock connector
23
240V AC input connector
24
AC fuse holders
25
SURGE lamp
⑥
⑦
⑧
⑬
⑫
⑪
⑯
⑤
③
④
②
①
⑩
⑨
⑭
⑮
⑱
⑰
⑲
⑳
25
21
22
23
24

15
8-2. Function of Each Part
①POWER switch
This switch controls the AC power input to the simulator.
②POWER indicator
A lamp to light up when the POWER switch ①is turned on.
③HIGH VOLTAGE ON switch (Warning buzzer switch)
This switch controls the high voltage output of the simulator. Press it and the high voltage circuitry
will be activated, an alarm sound is given simultaneously, and the built-in lamp of this switch,
SURGE lamp
25
and a warning lamp of the accessory illuminates.
④HIGH VOLTAGE OFF switch
Switch to turn off the high voltage circuit of the simulator.
⑤SURGE ADJ knob
This control adjusts the level of output voltage/current. It is operative only when the HIGH
VOLTAGE ON switch ③is on. Only when the knob is on ‘0’position, which means the knob is
rotated counterclockwise fully, the high voltage circuit can be turned ON.
⑥SURGE Voltage/Current indicator
This voltage/current meter indicates the output voltage or current. The lower black figure shows
voltage value, the upper red figure shows current value.
⑦MANUAL trigger switch (MANUAL SW)
This is the trigger switch to output surge. Trig SW operate for approx 2seconds.Single press
triggers single output.
⑧External trigger switch connector (EXT SW)
Connecting the External trigger switch to this connector enables external control of the simulator.
Single press causes the simulator to produce one surge (one discharge pulse from the energy
storage capacitors) each time it is pressed. To connect / disconnect the external trigger switch,
please turn off the high voltage circuit firstly.
⑨Voltage check connector (V-CHECK)
Connecting the attached waveform check terminal to this connector enables verification of the
peak voltage with an oscilloscope. This connector provide an attenuated signal (1/100). As only
the peak voltage is calibrated, a waveform observed at this connector is different from an actual
output waveform.
⑩Current check connector (A-CHECK)
Connecting the attached waveform check connector to this connector enables verification of the
peak current with an oscilloscope. This connector provide an attenuated signal (0.01V/A). As only
the peak current is calibrated, a waveform observed at this connector is different from an actual
output waveform.
⑪HOT SURGE OUT terminal (SURGE OUT)
Output terminal of voltage/current surge waveform. This terminal is used only when applying
surges to the sample directly but not by using the built-in power line injection circuit.
⑫POLARITY selector
This switch selects the polarity of the output surge.

16
⑬METER selector
This switch selects the mode(voltage or current) of the SURGE Voltage/Current indicator ⑥.
Select the mode corresponding to the selected output waveform
⑭Output waveform selector
Terminals to select the right components (inductors and resistors) and whether current limiter
(100Ω)is used or not to produce the desired waveform. Also terminals are provided to select
the output of the surges between the HOT terminal (SURGEOUT)⑪and the LINE OUT PHASE
R or LINE OUT PHASE S terminals ⑯. Connect the attached short bars for setup.
⑮SG GND terminal
Surge ground terminal used when applying surges directly to the sample without the use of the
built-in power line injection circuit.
⑯Surge injection phase selector(Surge injection part)
Equipped with switching terminals for selecting injection phase (R or S) and LINE OUT terminal
for supplying AC to EUT. The voltage / current surge is the LINE OUT terminal of the desired
phase which is set with injection switching terminals.
⑰LINE ON breaker
Turns ON/OFF power supply to EUT which is output from the LINE OUT terminal on the above⑯.
This breaker works independently with safety function of high voltage circuit. It is never turned of
linking with HIGH VOLTAGE OFF switch ④. Be sure to turn OFF this breaker (lower the lever)
before setting the surge injection part.
⑱LINE ON lamp
This lamp indicates the ON state of the LINE ON breaker ⑰.
⑲LINE IN connector
Feed the AC power (240V AC maximum) for the equipment under test to this connector.
⑳FG terminal
Terminal used to ground the simulator. Be sure to ground the terminal to prevent from getting
electric shock.
21
Warning lamp connector
Connects the attached Warning lamp. When the high voltage circuit is turned ON, AC power
(100V) is provided to illuminate the Warning lamp.
22
Safety interlock connector
This is provided as a safety measure. Open condition (disconnection of No.1 Pin form No.3 Pin)
causes the high voltage circuitry off. Connect the attached Interlock connector. If it is connected to
the safety box and the safety fence, you can utilize them as the safety apparatus. For controlling it,
use a contactor.
*The safety box and the safety fence are optional.
23
240V AC input connector
Connect the attached AC cable to supply AC power driving the surge generator.
24
AC fuse holders
A fuse rated at 250V 20A is in each holder.
25
SURGE lamp

17
Lights up when HIGH VOLTAGE ON switch ③is pressed.

18
9. SPECIFICATIONS
Voltage surge generating part
･Surge waveform·································1.2/50μs*1, 30% allowance for Front time,
20% allowance for Time to half-value.
･Surge voltage····································4kV～20kV±1kV *2
･Surge output polarity···························positive／negative
･Surge output impedance······················6Ω±10%
･Current limiter····································100Ω±10%
･Check connector······························· 1/100V (V-CHECK)
*1：Waveform measurements are done with no EUT connected by using a high voltage prove with
100MΩinput impedance.
*2：A discontinuity may be generated on the tail of the waveform.
Current surge generating part
･Surge waveform ································8/20μs *3, 10% allowance for both Front time, and
Time to half-value.
･Surge current ····································800A～4000A±400A *4
･Surge output polarity···························positive／negative
･Surge output impedance······················5Ω±10%
･Check connector································0.01V/A (A-CHECK)
*3：Waveform measurements are done with the output terminals short-circuited.
*4：A discontinuity may be generated on the tail of the waveform.
Surge generating part
･Surge polarity····································+(positive) or -(negative)
･Surge repetition cycle ·························Approx. 30s or longer by hand
･Prescription of waveform ·····················Conforming to the JEC-212 standard
AC power supply injection part
･Power supply capacity of equipment
under test·········································240V AC, Single-phase 20A MAX
･Surge voltage for superimposing on
power line ·······································20kV MAX.
･Surge current for superimposing on
power line ·······································4000A MAX
Others
･Power consumption····························240V AC ±5%, 50/60Hz, 300VA MAX
･Safety interlock··································Open condition inhibits the high voltage circuitry
from turning on.
Short-circuit current：100mA or less
Open-circuit voltage：approx 24V
･Dimensions ·····································555(W)×1860(H)×840(D)mm
･Weight·············································450 kg
Notice
This product employs a contact switch, which is deemed consumable component.
It shall be replaced when it comes to affect the output waveforms.