Kyoritsu Electrical Instruments Works, Ltd. KEW 6516 User manual

INSTRUCTION MANUAL
MULTI-FUNCTION TESTER
KEW 6516 / 6516BT
05-20 92-2385A
DISTRIBUTOR
Kyoritsu reserves the rights to change specifications or designs described in this
manual without notice and without obligations.

CONTENTS
1. Safe testing................................................................................................................. 1
2. Instrument layout........................................................................................................ 3
3. Accessories ................................................................................................................ 5
4. Features ..................................................................................................................... 7
5. Specification ............................................................................................................... 9
5.1 Measurement specification................................................................................... 9
5.2 General specification.......................................................................................... 14
5.3 Applied standards............................................................................................... 15
5.4 Operating uncertainty ......................................................................................... 16
5.5 Symbols and marks displayed on the LCD......................................................... 18
6. Setup mode .............................................................................................................. 19
7. Getting started.......................................................................................................... 20
7.1 Attaching metal tip/ adapter for test leads .......................................................... 20
7.2 Battery voltage check ......................................................................................... 21
7.3 Clock adjustment................................................................................................ 21
7.4 Help function....................................................................................................... 22
8. Continuity (resistance) tests ..................................................................................... 23
8.1 Test procedure.................................................................................................... 23
8.2 2ΩBuzzer ( ) function.................................................................................. 25
8.3 Switching test currents ....................................................................................... 25
8.4 Pat function......................................................................................................... 25
9. Insulation tests.......................................................................................................... 27
9.1 Measurement method......................................................................................... 28
9.2 Continuous measurement (Insulation resistance measurement) ....................... 30
9.3 Voltage characteristics of measurement terminals............................................. 30
9.4 DAR/ PI measurement, 1-min value display....................................................... 31
9.5 Pat function......................................................................................................... 31
9.6 SPD(Varistor) test............................................................................................... 32
10. LOOP/ PSC/PFC..................................................................................................... 33
10.1 Principles of measurement............................................................................... 33
10.2 Measurement method for LOOP high current .................................................. 38
10.3 Measurement method for LOOP ATT (Anti trip technology) ............................. 42
10.4 Loop limit value................................................................................................. 46

11. RCD tests ................................................................................................................ 48
11.1 Principles of RCD measurement ..................................................................... 48
11.2 Principles of Uc measurement......................................................................... 50
11.3 Measurement method for RCD........................................................................ 50
11.4 Auto test........................................................................................................... 53
11.5 VAR (variable current value) function .............................................................. 53
11.6 EV RCD ........................................................................................................... 54
12. Earth tests ............................................................................................................... 54
12.1 Principles of earth measurement..................................................................... 54
12.2 Earth resistance measurement........................................................................ 54
12.3 Measurement method for earth ....................................................................... 55
13. Phase rotation tests................................................................................................. 57
14. Volts......................................................................................................................... 58
15. Touch pad ................................................................................................................ 58
16. Memory function...................................................................................................... 59
16.1 How to save the data....................................................................................... 59
16.2 Recall the saved data...................................................................................... 60
16.3 Delete the saved data...................................................................................... 61
17. Transfer the stored data to PC ................................................................................ 62
18. Bluetooth communication (KEW 6516BT only) ....................................................... 63
18.1 Bluetooth communication ................................................................................ 63
18.2 KEW Smart * ................................................................................................... 64
19. Auto-power-off ......................................................................................................... 64
20. Battery and fuse replacement.................................................................................. 65
20.1 Battery replacement ........................................................................................ 66
20.2 Fuse replacement............................................................................................ 65
21. Servicing.................................................................................................................. 66
22. Case and strap assembly........................................................................................ 67
The KEW 6516/6516BT incorporates Anti Trip Technology (ATT) which electronically
bypasses RCDs when performing loop impedance tests. This saves time and money by
not having to take the RCD out of the circuit during testing and is a safer procedure to
follow. With the ATT function enabled, a test of 15mA or less is applied between line &
earth. It enables loop impedance measurements without tripping RCDs rated at 30mA
and above.
ATT supports measurements using three wires: Line, Earth, and Neutral and also two
wires: Line and Earth.
Please read this instruction manual carefully before using this instrument.

1
1. Safe testing
This instrument has been designed, manufactured and tested according to IEC 61010:
Safety requirements for electrical equipment for measurement, and delivered in the best
condition after passing quality control tests. This instruction manual contains warnings
and safety rules which must be observed by the user to ensure safe operation of the
instrument and to maintain it in safe condition. Therefore, read through these operating
instructions before starting to use the instrument.
#DANGER
●Read through and understand instructions contained in this manual before starting
to use the instrument.
●Keep the manual at hand to enable quick reference whenever necessary.
●The instrument is to be used only in its intended applications.
●Understand and follow all the safety instructions contained in the manual.
It is essential that the above instructions are adhered to. Failure to follow the above
instructions may cause injury, instrument damage and/or damage to equipment under
test. KYORITSU is by no means liable for any damage resulting from the instrument in
contradiction to these cautionary notes.
The symbol #indicated on the instrument means that the user must refer to the related
parts in the manual for safe operation of the instrument. It is essential to read the
instructions wherever the symbol #appears in the manual.
#DANGER : is reserved for conditions and actions that are likely to cause serious or
fatal injury.
#WARNING : is reserved for conditions and actions that can cause serious or fatal
injury.
#CAUTION : is reserved for conditions and actions that can cause injury or
instrument damage.
#DANGER
●Do not apply voltages above 600V, including voltage to earth, across the terminals
of this instrument.
●KEW 6516/ 6516BT are rated to CAT IV 300V/ CAT III 600V. Do not make
measurements under the circumstances exceeding the designed measurement
categories.
●Do not attempt to make measurements in the presence of flammable gasses;
otherwise, the use of the instrument may cause sparking, which can lead to an
explosion.
●Never attempt to use the instrument if its surface or your hand is wet.
●Be careful not to short-circuit a power line with the metal part of the test lead during
a measurement. It may cause personal injury.
●Never open the battery compartment cover during a measurement.
●The instrument should be used only in its intended applications or conditions;
otherwise, safety functions equipped with the instrument don't work, and instrument
damage or serious personal injury may be caused.
●Verify proper operation on a known source before use or take actions as a result of
the indication of the instrument.

2
#WARNING
●Do not use the instrument or test leads if any abnormal conditions, such as broken
cover or exposed metal parts are noted.
●First, firmly connect the test leads to the instrument, and then press the test switch.
●Never install substitute parts or make any modifications to the instrument. Send the
instrument to your local KYORITSU distributor for repair or recalibration.
●Do not try to replace batteries if the surface of the instrument is wet.
●Connect each test lead firmly into the corresponding terminals.
●Stop using the test lead if the outer jacket is damaged and the inner metal or color
jacket is exposed.
●Before opening the battery compartment cover for battery or fuse replacement,
ensure that no test leads are connected to the instrument and the instrument is off.
●Never turn the rotary switch while the test leads are connected to the equipment
under test.
#CAUTION
●Always make sure to set the rotary switch to the appropriate position before making
a measurement.
●Power off the instrument after use. Remove batteries if the instrument is to be
stored and won't be used for a long period.
●Do not expose the instrument to direct sunlight, high temperature, humidity or dew.
●Use a slightly damp cloth with neutral detergent or water for cleaning. Do not use
abrasives or solvents.
●This instrument isn't water-proof. Do not let the instrument get wet. Otherwise, it
may cause malfunction.
●If the instrument is wet, make sure to let it dry before putting it into storage.
●Keep your hand and fingers behind the protective finger guard during a
measurement.

3
2. Instrument layout
Item Description
(1) Test switch Starts measurements. (Press and rotate for lock down
feature.)
(2) Touch pad Checks the electrical potential at the PE terminal
(3) Power switch A long press turns on/ off the instrument.
(A short press works as an ESC switch to return to the
previous screen.)
(4) Function switch Function setting (F1 ~ F4)
(5) Display (LCD) Color LCD
(6) Rotary switch Selects measurement functions.
(7) MEM switch Saves measured value.
(Press 1 sec. to recall the saved data.)
(8) ENTER switch Confirms changes or selections.
(A long press of 1 sec. shows "HELP" menu.)
(7)
(5)
(2)
(3)
(4)
(6)
(1)
(8)
Fig.2-1

4
Input Terminal
Function Terminal
(1)
Terminals for :
INSULATION,
CONTINUITY
LOOP,
RCD,
VOLTS
L : Line
PE : Protective Earth
N : Neutral (for LOOP, RCD)
(2) Terminal for
PHASE ROTATION
L1 : Line1
L2 : Line2
L3 : Line3
(3) Terminal for EARTH
H(C) : Terminal for auxiliary earth spike (current)
E : Terminal for the earth under test
S(P) : Terminal for auxiliary earth spike (potential)
(4) Optical adapter Communication port for Model 8212USB
(1)
(2)
(3)
(4)
Fig.2-2

5
3. Accessories
●Test leads
(1) Mains Test Lead (Model 7218A)
Fig. 3-1 shows Model 7218A with European SHUKO plug: plug shape varies depending
on the country or region. Any of the following test leads is selected and packed
according to destination.
●Model 7222A(AU) for Australian plug
●Model 7187A (UK) for British plug
●Model 7221A (SA) for South African plug
(2) Remote Test Lead (Model 7281)
(3) Distribution Board test lead (Model 7246)
* 1 Protective finger guard is a part providing protection against electrical shock and
ensuring the minimum required clearance and creepage distances.
Green (Protective Earth)
Blue (Neutral)
Red (Line)
Insulation cap
Attachthe supplied detachable
cap as necessary.
For CAT III 600V (w/ cap)
For CAT II 1000V (w/o cap)
Metal tip
*1 Protective Finger Guard
Blue (Neutral or L3)
Green (Protective Earth or L2)
Red (Line or L1)
*1 Protective Finger Guard
Fig.3-1
Fig.3-2
Fig.3-3

6
(4) Earth Tests Lead (Model 7228A) and Auxiliary Earth Spikes
・Other accessories
(1) Test Lead Carry pouch Model 9084･･･x1
(2) Carrying Bag Model 9142･･･x1
(3) Instruction Manual･･･x1
(4) Shoulder Strap (with buckle) Model 9151･･･x1
(5) Shoulder Pad Model 9199･･･x1
(6) Battery･･･x8
(7) Spare Fuse F 0.5A 600V (Φ6.3 x 32mm)･･･ x1 (SIBA 7009463.0,5)
*Stored in the battery compartment.
(8) Model 8212USB with PC Software KEW Report.
(Standard accessory for KEW 6516, optional for KEW 6516BT)
・Optional item
(1) Extension prod Model 8017A
* Attached and used with Model 7281.
Yellow S(P)10m
Green E 5m
Red H(C) 20m
Model 8041 Auxiliary Earth Spikes x 2
Fig.3-5
Fig.3-4
Fig.3-6
Long type and helpful to access
the distant measurement spot
Fig.3-7

7
4. Features
The KEW 6516/ KEW 6516BT Multi-Function tester has eight test functions in one
instrument.
1 Continuity test
2 Insulation resistance test
3 Loop impedance test (High current measurement, No trip (ATT) measurement)
4 Prospective short circuit current test (On Loop impedance function)
5 RCD test
6 Voltage test
7 Phase rotation test
8 Earth test
Continuity function has the following features:
Fuse Protection
Continuity Function has a fuse protection function to prevent
a fuse blow at live working. With this function, a fuse rarely
blows while measuring continuity on live conductors.
Continuity Null Allows automatic subtraction of test lead resistance from
continuity measurements.
15mA test Not only 200mA but also 15mA is available.
Continuity 2ΩBuzzer Buzzer sounds at 2Ωor less at Continuity function.
(Switchable on or off)
Insulation function has the following features:
Auto-discharge Electric charges stored in capacitive circuits are discharged
automatically after testing by releasing the test switch.
SPD(VARISTOR) test Breakdown voltage measurement for surge protective device
(varistor)
Loop impedance functions have the following features:
ATT test Enables loop impedance tests without tripping RCDs rated at
30mA or higher. (applicable to 3 or 2-wire measurements)
LOOP 0.001Ωtest High resolution measurement, 0.001Ω, at a test current of
25A

8
RCD testing functions have the following features:
RCD Type B test Capable of testing Type B RCDs of dc residual current.
VAR(variable test current) Test current is variable on RCD range.
RCD AUTO TEST Auto-test in the following sequence: ×1/2(0°)→×1/2(180°)
→×1(0°)→×1(180°)→×5(0°) →×5(180°)
EV RCD EV charger RCD test
The following features are available on all testing functions.
Touch Pad Gives an alert, when touching the Touch Pad, while the PE
terminal is connected to Line by mistake.
Memory Function
Save the measured data in the internal memory.
The data can be edited on a PC by using Communication
Adapter Model 8212USB and PC Software "KEW Report".
Bluetooth
(KEW 6516BT only)
Remote monitoring and saving data on a Bluetooth tablet
device.

9
5. Specification
5.1 Measurement specification
VOLTS
Range 300.0/600V (Auto-ranging)
Display range Voltage: 2.0 – 314.9V, 240 – 629V
Frequency: 40.0 – 70.0Hz (displayed at 2V or higher)
Measuring range
(Guaranteed accuracy
range)
Voltage: 2 – 600V
Frequency: 45 – 65Hz
Accuracy Voltage: ±2%rdg±4dgt
Frequency: ±0.5%rdg±2dgt
* True-RMS detection. Add ±1%rdg to the declared accuracy for sine wave other than
CF<2.5. (850Vpeak or less)
PHASE ROTATION
Measuring range 48 – 600V 45 - 65Hz
Criteria of judgement
Correct sequence: Clockwise symbol and "1, 2, 3" are
displayed.
Reversed sequence: Counter-clockwise symbol and "3, 2, 1"
are displayed.
EARTH
Precise measurement Simplified measurement
Range 20.00/ 200.0/ 2000Ω(auto-ranging)
Display range
0.00 – 20.99Ω
16.00 – 209.9Ω
160.0 – 2099Ω
Measuring range
(Guaranteed
accuracy range)
0 – 2000Ω
Accuracy
20Ωrange; ±2%rdg±0.08Ω
The other ranges: ±2%rdg±3dgt
(Auxiliary earth resistance: 100Ω)
±2%rdg±0.08Ω
The other ranges:
±2%rdg±3dgt
Output current
20Ωrange: approx. 3mA
200Ωrange: approx. 1.7mA
2000Ωrange: approx. 0.7mA
Frequency: 825Hz

10
CONTINUITY
Range 20.00/200.0/2000Ω(auto-ranging)
Display range
0.00 - 20.99Ω
16.0 - 209.9Ω
160 - 2099Ω
Measuring range
(Guaranteed accuracy range) 0 – 2000Ω
Accuracy (NULL enabled) ±2.0%rdg±8dgt
Open-circuit voltage (DC) 7 – 14V
Test current 200mA test: 200mA or more (2Ωor less)
15mA test: 15mA±3mA (short-circuit)
●Enabled if pre-set NULL value is 9Ωor less.
●2ΩBuzzer: Buzzer sounds when measured resistance is 2Ωor less.
INSULATION
(1) INSULATION RESISTANCE
Rated
measurement
voltage
100V 250V 500V 1000V
Range 2.000/20.00/200.0MΩ
auto-ranging
20.00/200.0/1000MΩ
auto-ranging
20.00/200.0/2000MΩ
auto-ranging
Display range
0.000 - 2.099MΩ
1.60 - 20.99MΩ
16.0 - 209.9MΩ
0.00 - 20.99MΩ
16.0 - 209.9MΩ
160 - 1049MΩ
0.00 - 20.99MΩ
16.0 - 209.9MΩ
160 - 2099MΩ
Measuring range
(Guaranteed
accuracy range)
0 - 200MΩ0 - 1000MΩ0 - 2000MΩ
Accuracy
2.000MΩrange: ±2%rdg±6dgt
20.00MΩrange: ±2%rdg±6dgt
200MΩrange: ±5%rdg±6dgt
20.00MΩrange: ±(2%rdg+6dgt)
200.0MΩrange: ±(2%rdg+6dgt)
1000MΩrange:
±(5%rdg+6dgt)
2000MΩrange:
±(5%rdg+6dgt)
Rated
measurement
current
1.0 - 1.2mA
at 100kΩ
1.0 - 1.2mA
at 250kΩ
1.0 - 1.2mA
at 500kΩ
1.0 - 1.2mA
at 1MΩ
●Open-circuit voltage: 100 – 120% of rated measurement voltage
●Short-circuit current: within 1.5mA
●The tester outputs negative voltage from LINE terminal and positive voltage from
EARTH terminal.
●Max. capacitive load: 1μF: capacitive load dischargeable within 10 sec after test
(IEC 61010-2-034)
●Discontinuous beeps sound during a measurement on 1000V range.

11
(2) SPD test
Range 1000V
Display range 1049V
Measuring range 0 - 1049V
Accuracy ±5%rdg±5dgt
Voltage increase rate 100V / sec.
Voltage increase step Increases by 1V.
Threshold value for current detection 1mA
LOOP ATT
Function 3-Wire L-PE 2-Wire L-PE
Mains input
voltage range
100 – 260V 50/60Hz
(L-N < 20Ω)48 – 260V 50/60Hz
Range LOOP 20.00/200.0/2000Ω(auto-ranging)
PFC/PSC 2000A/20kA 2000A/20kA (PFC only)
Display range
LOOP
0.00 – 20.99Ω
21.0 – 209.9Ω
210 – 2099Ω
0.00 –20.99Ω
21.0 –209.9Ω
210 –2099Ω
PFC/PSC 0 – 2099A
2.10 – 20.99kA
0 – 2099A
2.10 – 20.99kA
(PFC only)
Measuring range
(Guaranteed
accuracy range)
LOOP 0 – 2000Ω0 – 2000Ω
Accuracy
LOOP
230V+10%-15%:
±(3%rdg+6dgt)
Other than above voltages:
±(3%rdg+8dgt)
230V+10%-15%:
±(3%rdg+10dgt)
Other than above voltages:
±(3%rdg+15dgt)
PFC/PSC Depending on the accuracies of voltage and LOOP
measurements
Test current
@230V
L-N:6A/60ms
N-PE:10mA (5.3Hz) L-PE: 15mA
* If a reading is unstable, one upper range digit might be used instead of the display
range to be used.

12
LOOP HIGH
Function L-PE0.01ΩRes L-PE0.001ΩRes L-N/L-L
Mains input
voltage range
48 - 260V
50/60Hz
100 - 260V
50/60Hz
48 - 500V
50/60Hz
Range
LOOP
20.00/200.0/2000Ω 2.000Ω20.00Ω
PFC/PSC 2000A/20kA
(PFC only)
2000A/50kA
(PFC only)
2000A/20kA
(PSC only)
Display
range
LOOP
0.00 - 20.99Ω
21.0 - 209.9Ω
210 –2099Ω
0.000 - 2.099Ω0.00-20.99Ω
PFC/PSC
0 - 2099A
2.10 - 20.99kA
(PFC only)
0 - 2099A
2.10 - 52.49kA
(PFC only)
0 - 2099A
2.10 - 20.99kA
(PSC only)
Measuring
range
(Guaranteed
accuracy
range)
LOOP 0 – 2000Ω0 – 2Ω0 – 20Ω
Accuracy
LOOP
230V+10%-15%:
±(3%rdg+4dgt)
100V or less:
±(5%rdg+15dgt)
Other than above
voltages:
±(3%rdg+8dgt)
230V+10%-15%:
±(3%rdg+25mΩ)
Other than above
voltages:
±(5%rdg+35mΩ)
230V+10%-15%:
±(3%rdg+4dgt)
100V or less:
±(5%rdg+15dgt)
Other than above
voltages:
±(3%rdg+8dgt)
PFC/PSC Depending on the accuracies of voltage and LOOP
measurements
Test current
@230V
20Ω: 6A/20ms
200Ω: 0.5A/20ms
2000Ω:
15mA/500ms
25A/20ms 6A/20ms
* If a reading is unstable, one upper range digit might be used instead of the display
range to be used.

13
RCD
(1) Mains input voltage range: 100V – 260V 50/ 60Hz
For Type AC and A RCDs rated at 100mA or higher: 190 – 260V
(2) Accuracy
Mode RCD
Type
Rated residual operating
current (mA)
(I⊿n)
Test current Duration
Current value
(mA) rms Accuracy @230V Measuring time Accuracy
×1/2
AC G 10/30/100/300/500/1000 I⊿n×1/2 -8% to-2%
VAR:-10% to 0%
2000ms
Trip Time
±(1%+2ms)
Measuring
time
±3% of FS
S 10/30/100/300/500
A/F G 10/30/100/300/500 I⊿n×0.35 -10% to 0%
S 10/30/100/300/500
BG 10/30/100/300 I⊿n×1/2 -10% to 0%
S 10/30/100/300
×1
AC G 10/30/100/300/500/1000 I⊿n
+2% to +8%
VAR:0% to +10%
G:550ms
S:1000ms
S 10/30/100/300/500
A/F G 10/30/100/300/500
10mA: I⊿n×2
Other currents:
I⊿n×1.4
0% to +10%
S 10/30/100/300/500
BG 10/30/100/300 I⊿n×2 0% to +10%
S 10/30/100/300
EV 6 I⊿n 0% to +10% 10.5s
×5
AC G 10/30/100 I⊿n×5
+2% to +8%
VAR:0% to +10%
410ms
S 10/30/100
A/F G 10/30/100 I⊿n×5×1.4 0% to +10%
S 10/30/100
BG 10/30 I⊿n×2×5 0% to +10%
S 10/30
Ramp
20% to
110%
(EV 30%
to 100%)
AC G 10/30/100/300/500 I⊿n -4% to +4% by 10%
G: 300ms
S: 500ms
Measuring
time
±3% of FS
S 10/30/100/300/500
A/F G 10/30/100/300/500 10mA:I⊿n×2 Other currents:
I⊿n×1.4
-10% to +10%
S 10/30/100/300/500
BG 10/30/100/300 I⊿n×2 -10% to +10% by 2%
150ms
S 10/30/100/300
EV 6 I⊿n -10% to +10%
by 2%
500ms
(10s is kept
only at 100%)
・AUTO-TEST：X1/2(0°)→X1/2(180°)→X1(0°)→X1(180°)→X5(0°)→X5(180°)
The test of "X5" will be skipped when a current is 100mA or higher.
At the auto-test for Type EV, additional 6 mA DC test is performed.
Current waveform of KEW 6516/6516BT
・Type AC: Test current is sine wave.
・Type A and F: Test current is half sine wave.
・Type B and EV: Direct current

14
(3) Uc(RCD)
Mains input voltage range 100-260V
Range 100V
Display range 0.0 - 104.9V
Measuring range
(Guaranteed accuracy range) 0 - 100V
Accuracy +5% to+15%rdg±8dgt @230V
Test current 50 % or less of IΔn
Possible number of tests with fresh batteries.
CONTINUITY : Approx. 2000 times min. at load 1Ω
INSULATION RESISTANCE : Approx. 1500 times min. at load 1MΩ(1000V)
LOOP : Approx. 3000 times min. (ATT L-PE 3W)
RCD : Approx. 3500 times min. (G-AC X1 30mA)
EARTH : Approx. 3000 times min. at load 10Ω
VOLTS/PHASE ROTATION : Approx. 40h
5.2 General specification
Reference conditions
Specifications are based on the following conditions except
where otherwise stated:-
1. Ambient temperature: 23±5°C:
2. Relative humidity: 45% to 75%
3. Nominal voltage of distribution system (Un) :
230V/400V, 50Hz/60Hz
4. Altitude: Less than 2000m
Instrument dimensions 235 X 136 X 114mm
Instrument weight 1350g (including batteries)
Battery type Size AA Alkaline battery (LR6) x 8
Operating temperature
and humidity
-10 to +50°C, relative humidity 80% or less, no condensation
Storage temperature
and humidity
-20 to +60°C, relative humidity 75% or less, no condensation
Display Color Dot Matrix LCD 320(W) X 240(H) pixels.
Overload protection
The continuity test circuit is protected by a 0.5A/600V fast
acting (HRC) ceramic fuse mounted in the battery
compartment, where a spare fuse is also stored.
The insulation resistance test circuit is protected by a
resistor against 1000V AC for 10 seconds.

15
5.3 Applied standards
Instrument operating
Standard IEC61557-1,2,3,4,5,6,7,10
Safety standard
IEC 61010-1, -2-030, -2-034
CATIII (600V) CATIV (300V) -Instrument
IEC 61010-031
Model 7218A…CAT II 250V
Model 7246 …CATIII 600V/ CATIV300V
Model 7228A…CATIII 300V
Model 7281 …CATIII 600V/ CATIV300V (w/ cap)
…CAT II 1000V (w/o cap)
…CAT II 1000V (w/ 8017A)
(Attach the supplied protective cap to use this test leads in CAT
III or higher environments.)
* When test leads, sometimes with metal tips, are connected
and used with the instrument, the measurement category and
voltage rating of the lowest rated item is applied.
Protection degree IEC 60529 IP40
EMC EN 61326-2-2
This manual and product may use the following symbols adopted from International
Safety Standards;
CAT II
Measurement category "CAT II" applies to;
Electrical circuits of equipment connected to an AC electrical outlet by a
power cord.
CAT III
Measurement category "CAT III" applies to;
Primary electrical circuits of the equipment connected directly to the
distribution panel, and feeders from the distribution panel to outlets.
CAT IV
Measurement category "CAT IV" applies to;
The circuit from the service drop to the service entrance, and to the power
meter and primary overcurrent protection device (distribution panel).
Equipment protected throughout by DOUBLE INSULATION or
REINFORCED INSULATION;
#Caution (refer to accompanying documents)
Caution, risk of electric shock
Protection against wrong connection is up to 600V
Earth Ground
Complies with WEEE Directive (2002/ 96/ EC) marking requirements. (valid
in each EU country)
To ensure safe operation of measuring instruments, IEC 61010 establishes safety
standards for various electrical environments, categorized as O to CAT IV, and called
measurement categories. Higher-numbered categories correspond to electrical
environments with greater momentary energy, so a measuring instrument designed for
CAT III environments can endure greater momentary energy than one designed for CAT II.

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O (None, other) : Circuits which are not directly connected to the mains power supply.
CAT II : Electrical circuits of equipment connected to an AC electrical outlet
by a power cord.
CAT III : Primary electrical circuits of the equipment 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).
5.4 Operating uncertainty
Continuity (EN61557-4)
Operating range compliant with EN61557-4
operating uncertainty
Maximum percentage operating
uncertainty
0.20 to 2000Ω±30%
The influencing variations used for calculating the operating error are denoted as follows;
Temperature: 0℃and 35℃
Supply voltage: 8V to 13.8V
Insulation Resistance (EN61557-2)
Volt Operating range compliant with
EN61557-2 operating uncertainty
Maximum percentage
operating uncertainty
100V 0.100 to 200.0MΩ
±30%
250V 0.250 to 200.0MΩ
500V 0.50 to 1000MΩ
1000V 1.00 to 2000MΩ
The influencing variations used for calculating the operating error are denoted as
follows;
Temperature: 0℃and 35℃
Supply voltage: 8V to 13.8V
O: Device which is
not directly
connected to the
mains power supply

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Loop Impedance (EN61557-3)
Function
Operating range compliant
with EN61557-3 operating
uncertainty
Maximum percentage
operating uncertainty
HIGH
L-PE 0.01ΩRes 0.40 to 2000Ω
±30%
L-PE 0.001ΩRes 0.400 to 1.999Ω
L-N/L-L 0.40 to 20.00Ω
ATT 2Wire 1.00 to 20.00Ω
3Wire 0.40 to 2000Ω
The influencing variations used for calculating the operating error are denoted as follows;
Temperature: 0℃and 35℃
Phase angle: At a phase angle 0° to 30°
System frequency: 49.5Hz to 50.5Hz
System voltage: 230V+10%-15%
Supply voltage: 8V to 13.8V
Harmonics: 5% of 3rd harmonic at 0°phase angle
6% of 5th harmonic at 180°phase angle
5% of 7th harmonic at 0°phase angle
DC quantity: 0.5% of the nominal voltage
RCD (EN61557-6)
Function Operating uncertainty of trip current
X1/2 -10% to 0%
X1, X5 0% to +10%
Ramp -10% to +10%
The influencing variations used for calculating the operating error are denoted as follows.
・Temperature : 0℃and 35℃
・Earth electrode Resistance (shall not exceed below) :
IΔnType AC Type A/F Type B Type EV
6mA - - - 400Ω
10mA 400Ω200Ω40Ω-
30mA 100Ω40Ω10Ω-
100mA 40Ω20Ω10Ω-
300mA 40Ω20Ω2Ω-
500mA 40Ω20Ω- -
1000mA 20Ω---
・System voltage: 230V+10%-15%
・Supply voltage : 8V to 13.8V
Earth Resistance (EN61557-5)
Operating range compliant with EN61557-5
operating uncertainty
Maximum percentage operating
uncertainty
5.00 to 1999Ω±30%
The influencing variations used for calculating the operating error are denoted as follows;
・Temperature : 0℃and 35℃
・Series interference voltage : 16·2/3Hz, 50Hz, 60Hz, DC:10V
400Hz: 3V
・
Resistance of the probes and auxiliary earth electrode resistance: 100 x RA, 50kΩor less
・Supply voltage : 8V to 13.8V