DISTRIBUTOR INSTRUCTION MANUAL Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations.
CONTENTS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Safe Testing ............................................................................................................. 1 Instruments Layout .................................................................................................. 3 Accessories ............................................................................................................. 5 Features .........................................................................................
11. Earth tests ............................................................................................................. 11.1 Principles of Earth Measurement ................................................................. 11.2 Earth resistance Measurement .................................................................... 12. Phase Rotation tests ............................................................................................. 13. Volts ...................................................
1. SAFE TESTING Electricity is dangerous and can cause injury and death. Always treat it with the greatest of respect and care. If you are not quite sure how to proceed, stop and take advice from a qualified person. 1 This instrument must only be used by a competent and trained person and operated in strict accordance with the instructions. KYORITSU will not accept liability for any damage or injury caused by misuse or non-compliance with the instructions or with the safety procedures.
11 Do not operate the function selector while the instrument is connected to a circuit. If, for example, the instrument has just completed a continuity test and an insulation test is to follow, disconnect the test leads from the circuit before moving the selector switch. 12 Do not rotate rotary switch when test button is depressed. If the function switch is inadvertently moved to a new function when the test button is depressed or in lockdown position the test in progress will be halted.
2. INSTRUMENT LAYOUT (1) (6) (7) (8) (2) (3) (4) (5) Fig.1 (9) Name Operation (1) Back Light Button Switches on/off the Backlight of the Display(LCD) (2) Test Button Starts measurements.
Input Terminal (4) (1) (2) (3) (1) Fig.
3. Accessories 1.Main Test Lead (Model7218) Red(Line) Green(Protective Earth) Blue(Neutral) Fig.3 2.Remote Test Lead (Model 7196) Fig.4 3.Distribution Board fused test lead (Model7188) (Fuse: 10A/600V fast acting ceramic) Red(Line or L1) Green(Protective Earth or L2) Blue(Neutral or L3) Fig.5 4. Earth Tests Lead(Model7228) and Auxiliary Earth Spikes Red H(C) 20m Green E 5m Yellow S(P)10m Fig.6 Fig.7 Auxiliary Earth Spikes x2 5.Test Lead Carry pouch･･･x1 6.Carrying Bag･･･x1 7.
4. FEATURES The KEW6016 Multi-Function tester performs eight functions in one instrument. 1 Continuity tester 2 Insulation resistance tester 3 Loop impedance tester 4 Prospective short circuit current tester 5 RCD tester 6 Voltage tester 7 Phase rotation tester 8 Earth tester Continuity function has the following features: Live circuit warning “Live Circuit”warning on the display. Fuse Protection Continuity Function has a fuse protection function to prevent a fuse blow at live working.
Loop impedance, PSC/PFC and RCD testing functions have the following features: Wiring check Three Wiring symbols indicate if the wiring of the circuit under test is correct. Over temperature protection Detects overheating of the internal resistor (used for LOOP and PSC/PFC tests) and of the current control MOS FET (used for RCD tests) displaying a warning symbol and automatically halting further measurements.
5. Specification 5.1 Measurement Specification Continuity Open Circuit Voltage (DC) Short Circuit Current Greater than 200mA Range Accuracy 0~0.19Ω ±0.1Ω 0.2~2000Ω ±(2%rdg+8dgt) 2Ω Buzzer : Buzzer sounds when measured resistance is 2Ω or less. 2Ω Buzzer Accuracy : 2Ω±0.4Ω (*1) Voltages are output when measurement resistance is under 2100 ohm.
PSC (L-N/L-L) / PFC (L-PE) Function Rated Voltage PSC 100~500V 50/60Hz PFC 100~260V 50/60Hz PFC (ATT) 100~260V 50/60Hz Nominal Test Current at 0Ω External Loop: Magnitude/Duration(*5) Range Accuracy PSC/PFC accuracy is derived from 6A/20ms measured loop 2000A/20kA 2A/20ms impedance Auto-Ranging 15mA/500ms specification and measured voltage L-N: 6A/60ms specification N-PE: 10mA/approx.
RCD Trip Current Duration Function X1/2 X1 Trip Current Duration (ms) X5 Ramp (◢) Type G S G S G S G S AC A AC A AC A AC A AC A AC A AC A AC A RCD Trip Current Duration 10 30 100 300 500 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 550 550 550 550 550 550 550 550 550 550 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 410 410 410 n.a n.a 410 410 410 n.a n.a 410 410 410 n.a n.a 410 410 410 n.a n.
Possible number of tests with fresh batteries. Continuity :Approx. 2000 times min. at load 1Ω Insulation Resistance :Approx. 1000 times min. at load 1MΩ (1000V) LOOP/PFC/PSC :Approx. 1000 times min. (ATT) RCD :Approx. 2000 times min. (G-AC X1 30mA) EARTH :Approx. 1000 times min. at load 10Ω VOLT/PHASE ROTATION :Approx. 50H Reference Conditions Ambient temperature 23±5℃ Relative humidity 45% to 75% Nominal system voltage and frequency 230V, 50Hz Altitude Less than 2000m 5.
Loop Impedance(EN61557-3) Volt Operating range compliant with EN61557-3 operating error L-PE 0.50~1999Ω L-N 0.50~19.99Ω Maximum percentage operating error ±30% 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 18° System frequency : 49.5Hz to 50.5Hz System voltage : 230V+10%-15% Supply voltage : 8V to 13.
Earth Resistance (EN61557-5) Operating range compliant with EN61557-5 operating error Maximum percentage operating error 5.00~1999Ω ±30% The influencing variations used for calculating the operating error are denoted as follows; Temperature : 0 ℃ and 35 ℃ Series interference voltage : 3V Resistance of the probes and auxiliary earth electrode resistance : 100 x RA, 50kΩ or less Supply voltage : 8V to 13.8V 5.
5.4 Applied standards Instrument operating Standard IEC/EN61557-1,2,3,4,5,6,7,10 Safety standard IEC/EN 61010-1(2001), CATIII (300V) -Instrument IEC/EN 61010-031(2001), CATII (250V)-Test Lead Model7218 CATIII (600V)-Test Lead Model7188 CATIII (1000V)-Test Lead Model7196 CATIII (300V)-Test Lead Model7228 Protection degree IEC 60529 (1989 + A1) IP40 EMC EN 61326 EN55022/24 This manual and product may use the following symbols adopted from International Safety Standards; CAT.
5.5 List of Display Message Low battery warning Temperature monitor for internal resistance, available at Loop, PSC/PFC & RCD function. Further measurements are suspended until the“ ”symbol disappears.
6. Configuration Setting for following three parameters ● UL value････････Selects a UL value for RCD function ● Touch Pad･･････Enables / disables Touch Pad function ● Back Light･･････Selects Backlight ON / OFF. When ON is selected, the Backlight automatically turns on at powering on the instrument. ● Language ･･････ Select and change the languages to be displayed. Setting method 2. Then, Configuration Screen (Fig.10) is displayed. 1. Press the Config Button (F4) when powering on KEW6016. (Fig.
7. CONTINUITY (RESISTANCE) TESTS # WARNING Ensure that circuits to be tested are not live. Disconnect the instrument from the circuit under test before operating the function switch. To select the low resistance range select‘CONTINUITY’. 7.1 Test Procedure The object of continuity testing is to measure only the resistance of the parts of the wiring system under test. This measurement should not include the resistance of any test leads used.
Measuring Ω NULL ON Measuring NULL Ω ON Fig.13 4 Operate the Continuity Null (F1) button, this will null out the lead resistance and the indicated reading should go to zero. 5 Release the test button. Press the test button and ensure the display reads zero before proceeding. While using the Continuity null function,“NULL ”is displayed on the LCD as indicated in Fig.13. The null value will be stored even if the instrument is powered off.
PE PE MAIN EQUIPOTENTIAL BONDING WATER GAS Ω NULL ON Fig.14 Example of continuity test for main equipotential bonding. 7.2 2Ω Buzzer ( ) function Use F2 Button to enable / disable the 2Ω Buzzer. The buzzer sounds when measured resistance is 2Ω or less while this function is enabled. The buzzer does not sound if it is disabled.
8. INSULATION TESTS # WARNING Ensure that circuits to be tested are not live. Disconnect the instrument from the circuit under test before operating the function switch. To select the insulation resistance range select‘INSULATION’. 8.1.1 The nature of insulation resistance Live conductors are separated from each other and from earth metal by insulation, which has a resistance which is high enough to ensure that the current between conductors and to earth is kept at an acceptably low level.
8.1.3 Conduction Current Since the insulation resistance is not infinite, a small leakage current flows through the insulation between conductors. Since Ohm's Law applies, the leakage current can be calculated from Fig.16 8.1.4 Surface Leakage Current Where insulation is removed, for the connection of conductors and so on, current will flow across the surfaces of the insulation between the bare conductors.
If the circuit has alternating voltage applied, the capacitive current (8.1.2) will always be present and can never be eliminated. This is why a direct voltage is used for insulation resistance measurement, the leakage current in this case quickly falling to zero so that it has no effect on the measurement. A high voltage is used because this will often break down poor insulation and cause flashover due to surface leakage (see 8.1.
8.3 Preparation for measurement Before testing, always check the following:1 The‘low battery’Indication is not displayed 2 There is no visually obvious damage to the tester or to the test leads 3 Test the continuity of the test leads by switching to continuity test and shorting out the lead ends. A high reading will indicate that there is a faulty lead or that the fuse is blown. 4 Make sure the circuit to be tested is not live.
4 Attach the test leads to the circuit or the appliance under test (see Figs 20 & 21) MΩ 1000V Fig.20 Example of Insulation resistance test on 4 wire-3 phase system. 5 If the“Live Circuit”warning is displayed on the LCD and/or the buzzer sounds, do not press the test button but disconnect the instrument from the circuit. Make the circuit dead before proceeding. MΩ 1000V Fig.
# WARNING ● Never touch the circuit, test lead tips or the appliance under test during insulation testing because high voltages exist. # CAUTION ● Never turn the Rotary switch while the test button is depressed as this may damage the instrument. ● Always release the test button first after testing before removing the test leads from the circuit. This is to ensure that charges stored in the circuit capacitance have been totally discharged.
9. LOOP/ PSC/PFC 9.1 Principles of measurement of fault loop impedance and PFC If an electrical installation is protected by over-current protective devices including circuit breakers or fuses, the earth loop impedance should be measured. In the event of a fault the earth fault loop impedance should be low enough (and the prospective fault current high enough) to allow automatic disconnection of the electrical supply by the circuit protection device within a prescribed time interval.
According to the International Standard IEC 60364, for TT systems the characteristics of the protective device and the circuit resistance shall fulfill the following requirements: Ra x Ia ≤ 50V Where: Ra is the sum of the resistances in Ω of the local earth system and the protective conductor for the exposed conductive parts. 50 is the maximum safety touch voltage limit (it can be 25V in particular cases like construction sites, agricultural premises, etc.).
L - PE Ω 230V 50.0Hz ATT:ON L-PE L-N ! Fig.23 For this example the max permissible value is 1667 Ω (RCD =30mA and contact voltage limit of 50 V). The instruments reads 12.74 Ω, thus the condition RA ≤ 50/Ia is respected. However, considering that the RCD is essential for protection, it must be tested (Please refer to RCD TESTS section). TN System For TN systems the earth fault loop impedance is the sum of the following impedances. ● Impedance of the power transformer secondary winding.
According to the International Standard IEC 60364, for TN system the characteristics of the protective device and the circuit impedance shall fulfill the following requirement: Zs x Ia ≤ Uo Where: Zs is the Fault loop impedance in ohm. Uo is the nominal voltage between phase to earth (typically 230V AC for both single phase and three phase circuits).
Protection by gG fuses with Uo of 230V Protection by MCBs with Uo of 230V (Disconnection time 0.4 and 5s) Disconnection Disconnection Characteristic Characteristic Characteristic time 5s time 0.4s B C D Rating (A) Ia Zs Ia Zs Ia Zs Ia Zs Ia Zs (A) (Ω) (A) (Ω) (A) (Ω) (A) (Ω) (A) (Ω) 6 17 13.5 38 8.52 30 7.67 60 3.83 120 1.92 10 31 7.42 45 5.11 50 4.6 100 2.3 200 1.15 16 55 4.18 85 2.7 80 2.87 160 1.44 320 0.72 20 79 2.91 130 1.77 100 2.3 200 1.15 400 0.
Max value of Zs for this example is 1.44 Ω (MCB 16A, characteristic C), the instrument reads 1.14 Ω (or 202 A on Fault current range) it means that the condition Zs x Ia ≤ Uo is respected. In fact the Zs of 1.14 Ω is less than 1.44 Ω (or the Fault current of 202 A is more than Ia of 160A). In other words, in case of fault between phase and earth, the wall socket tested in this example is protected because the MCB will trip within the disconnection time required. 9.
9.3. Operating instructions for LOOP and PSC/PFC 9.3.1 Initial Checks: to be carried out before any testing 1. Preparation Always inspect your test instrument and lead accessories for abnormality or damage: If abnormal conditions exist DO NOT PROCEED WITH TESTING. Have the instrument checked by your distributor. Operation of Function Switch LOOP Ω L-PE 230V 50.0Hz ATT : ON L-PE L-N ! Fig.
(3) Press the MODE switch(F1) and select L-N to measure Loop(L-N/L-L) or PSC or select L-PE to measure earth loop impedance or PFC. Display changes automatically as follows depending on the applied voltages while LOOP(L-N/L-L) or PSC is selected. Fig.30 (4) Pressing the ATT switch (F2) disables ATT mode. Then“ATT OFF”is displayed on the LCD. ● ATT(Anti Trip Technology) is to measure LOOP resistances without tripping the RCDs rated at 30mA or more.“ATT ON”is displayed while it is activated. 2.
9.3.2 Measurement of LOOP and PSC/PFC a. Measurement at Mains Socket Outlet Connect the mains test lead to the instrument. Insert the moulded plug of mains test lead into the socket to be tested. (see Fig.31) Press MODE Switch (F1) and select L-N or PSC to measure between Line – Neutral, or L-PE or PFC to measure between Line-PE. Carry out the initial checks Press the test button. A beep will sound as the test is conducted and the value of loop impedance will be displayed. b.
● Measurement in ATT mode requires longer time than that is required for the other measurements (approx. 7 sec). When measuring a circuit with a large electrical noise, the 'Noise' Message is displayed on the LCD and the measurement time will be extended to 20 sec. If the 'NOISE' symbol is displayed on the LCD, it is recommended to disable the ATT mode and take a measurement (RCDs may trip).
PE L-PE Ω 230V 50.0Hz ATT:ON L-PE L-N ! Fig.32 Connection for distribution PSC A L-N 230V 50.0Hz L-PE L-N ! Fig.33 Connection for Line – Neutral measurement PSC A L-L 400V 50.0Hz L-PE L-N ! Fig.
10. RCD TESTS 10.1 Principles of RCD Measurement The RCD tester is connected between phase and protective conductor on the load side of the RCD after disconnecting the load. A precisely measured current for a carefully timed period is drawn from the phase and returns via the earth, thus tripping the device. The instrument measures and displays the exact time taken for the circuit to be opened. An RCD is a switching device designed for breaking currents when the residual current attains a specific value.
However it is also good practice to consider even more stringent trip time limits, by following the standard values of trip times at I△n defined by IEC 61009 (EN 61009) and IEC 61008 (EN 61008).
Practical example of RCD test with distribution leads. PE ms ×1 30 mA L-PE 230V 50.0Hz UL50V L-PE L-N PHASE : 0° ! Fig.37 10.2 Principles of Uc Measurement Ground being imperfect in the Fig35, when R exists, when a fault current flows to R, electric potential occurs. There is a possibility the person contacting in this imperfect ground, it calls the voltage, which it occurs in the human body of this time, called Uc. When with the Uc Test letting flow IΔN to the RCD, the Uc is calculated.
1. Operate the Power button and turn on the instrument. Turn the rotary switch and select the RCD function. 2. Press the MODE switch(F1) and select any desirable measurement mode. X1/2 For testing RCD's to verify that they are not too sensitive. X1 For measuring the trip time. X5 For testing at IΔn X5 RAMP(◢) For measuring the tripping level in mA. AUTO For automatic measurement in following sequence: X1/2(0° ), X1/2(180° ), X1(0° ),X1 (180° ), X5(0° ), X5(180° ) Uc For measuring Uc 3.
3. Voltage Measurement When the instrument is first connected to the system, it will display the line-earth voltage which is updated every 1s. If this voltage is not normal or as expected, DO NOT PROCEED. NOTE: This is a single phase (230V AC) instrument and under no circumstances should it be connected to 2- phases or a voltage exceeding 230VAC+10%. If the input voltage is greater than 260V the display will indicate '>260V' and RCD measurements can not be made even if the Test button is pressed. 10.3.
therefore, the connection between neutral point of the distribution system and earth should be checked before testing. ● If leakage currents flow in the circuit following the RCD, it may influence the measurements. ● The potential fields of other earthing installations may influence the measurement. ● Special conditions of RCDs of a particular design, for example S- type, should be taken into consideration. ● The earth electrode resistance of a measuring circuit with a probe shall not exceed table1.
11. EARTH TESTS 11.1 Principles of Earth Measurement This Earth function is to test power distribution lines, in-house wiring system, electrical appliances etc. This instrument makes earth resistance measurement with fall-of-potential method, which is a method to obtain earth resistance value Rx by applying AC constant current I between the measurement object E (earth electrode) and H(C) (current electrode), and finding out the potential difference V between E and S(P) (potential electrode).
Note : ● Make sure to stick the auxiliary earth spikes in the moist part of the soil. Give enough water where the spikes have to be stuck into the dry, stony or sandy part of the earth so that it may become moist. ● In case of concrete, lay the auxiliary earth spike down and water it, or put a wet dust cloth etc. on the spike when making measurement. E S(P) H(C) Ω Fig.42 4.Press the test button, the display will show the earth resistance of the circuit.
12. PHASE ROTATION TESTS 1. Operate the Power button and turn on the instrument. Turn the rotary switch and select the PHASE ROTAION function. 2. Insert the Test Leads into the instrument. (Fig.43) Fig.43 3. Connect each test leads to a circuit. (Fig.44) L3 L2 L1 Fig.44 4. Results are displayed as follows. Correct phase sequence Fig.45 Reversed phase sequence Fig.
13. VOLTS 1. Operate the Power button and turn on the instrument. Turn the rotary switch and select the VOLTS function. 2. Insert the Test Leads into the instrument. (Fig.47) Fig.47 3. Voltage value and frequency will be displayed on the LCD when applying AC voltage. Note : A message“DC V”may be displayed when measuring AC voltages with frequencies out of the range 45Hz - 65Hz. 14. TOUCH PAD 1. The touch pad measures the potential between the operator and the tester's PE terminal.
16. MEMORY FUNCTION Measured result at each function can be saved in the memory of the instrument. (MAX : 1000) 16.1 How to save the data Save the result according to following sequence. 18.52 MΩ (1) Measured result. 250V (2) Press Fig.48-1 to enter into MEMORY MODE. MEMORY MODE ESC:MEM BUTTON SAVE RECALL DELETE (3) Press Fig.48-2 ALL DELETE to enter into SAVE MODE. (4) Make setting for following items. SAVE MODE DATA No.001 1. CIRCUIT No 2. BOARD No 3. SITE No 4.
(5) Press OK( ). (Confirmed) SAVE MODE DATA No.001 INSULATION 18.52MΩ 250V SAVE BACK (6) Press SAVE( CIRCUIT : 01 BOARD : 01 SITE : 01 Fig.48-4 ). (Confirmed) Saving (7)“SAVING”is displayed for about 2 sec on the LCD, and then returns to the start screen. Saving completes. Fig.48-5 18.52 MΩ Returns to Normal mode once data save completes. (Measurement mode) 250V Normal mode 48 Fig.
16.2 Recall the saved data Save data can be displayed on LCD according to following sequence. MΩ Fig.49-1 250V (1) Press to enter into MEMORY MODE. MEMORY MODE ESC:MEM BUTTON SAVE RECALL DELETE ALL DELETE (2) Press Fig.49-2 to enter into RECALL MODE. RECALL MODE DATA No. 000 (3) Press Up( Data No. )or DOWN( )and select UP DOWN Keep the UP/DOWN Key pressed down until a buzzer sounds to skip the number containing no data and display the next data. BACK 49 INSULATION 18.
16.3 Delete the saved data Save data can be deleted according to following sequence. MΩ 250V Fig.50-1 (1) Press to enter into MEMORY MODE. MEMORY MODE ESC:MEM BUTTON SAVE RECALL DELETE ALL DELETE Fig.50-2 ALL DELETE DELETE (2) Press to enter into ALL DELETE MODE (2) Press to enter into DELETE MODE Delete All? DELETE MODE (3) Press Up( ) or DOWN( ) and select Data No. Fig.50-3 DATA No. 000 UP DOWN ESC:MEM BUTTON INSULATION 18.
DELETE ALL DELETE DELETE MODE All Deleting DATA No.001? INSULATION 18.52MΩ 250V Fig.50-5 DELETE BACK CIRCUIT : 01 BOARD : 01 SITE : 01 Fig.50-6 (5) Press DELETE ( (Confirmed) ). Deleting MΩ 250V Fig.50-7 Fig.50-8 (6) Returns to Normal mode when selected data deleted. (Measurement mode) MΩ 250V Fig.50-9 51 (4) Returns to Normal mode when selected data is deleted.
16.4 Transfer the stored data to PC The stored data can be transferred to PC via Optical Adapter Model8212USB (Optional Accessory). Fig.51 ●How to transfer the data: (1) Connect Model8212USB to the USB Port of a PC.(Special driver for Model8212USB should be installed. See the instruction manual for Model8212USB for further details.) (2) Insert Model8212USB into the KEW6016 as shown in Fig 52. Test Leads should be removed from the KEW6016 at this time. (3) Power on the KEW6016. (Any function is OK.
17. GENERAL 17.1 If the symbol ( )appears, this means that the test resistor is too hot and the automatic cut out circuits have operated. Allow the instrument to cool down before proceeding. The overheat circuits protect the test resistor against heat damage. 17.2 The test button may be turned clockwise to lock it down.
18. BATTERY REPLACEMENT When the display shows the low battery indication , , disconnect the test leads from the instrument. Remove the battery cover and the batteries. Replace with eight (8) new 1.5V AA batteries, taking care to observe correct polarity. Replace the battery cover. 19. FUSE REPLACEMENT The continuity test circuit is protected by a 600V 0.5A HRC ceramic type fuse situated in the battery compartment, together with a spare.
20. SERVICING If this tester should fail to operate correctly, return it to your distributor stating the exact nature of the fault. Before returning the instrument ensure that:1.The leads have been checked for continuity and signs of damage. 2.The continuity mode fuse (situated in the battery compartment) has been checked. 3.The batteries are in good condition.
CONTENTS 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Safe Testing ............................................................................................................. 1 Instruments Layout .................................................................................................. 3 Accessories ............................................................................................................. 5 Features .........................................................................................
DISTRIBUTOR INSTRUCTION MANUAL Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations.
