Kyoritsu Electrical Instruments Works, Ltd. 6050 Instruction Manual
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Kyoritsu Electrical Instruments Works, Ltd. 6050 Instruction Manual

Combitester loop plus rcd
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INSTRUCTION MANUAL
COMBITESTER(LOOP+RCD)
MODEL 6050
KYORITSU ELECTRICAL INSTRUMENTS
WORKS， LTD.

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Summary of Contents for Kyoritsu Electrical Instruments Works, Ltd. 6050

  • Page 1 INSTRUCTION MANUAL COMBITESTER(LOOP+RCD) MODEL 6050 KYORITSU ELECTRICAL INSTRUMENTS WORKS， LTD.

  • Page 2: Table Of Contents

    　CONTENTS 1. Safe Testing ..................1 2. Procedure of removing cover ............4 2.1 Method of removing the cover ............ 4 2.2 Method of storing the cover ............4 3. Features .................... 5 3.1 Instrument Layout ............... 5 3.2 Test Lead ...................

  • Page 3: Safe Testing

    　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. This instruction manual contains warning and safety rules which must be observed by the user to ensure safe operation of the instrument and retain it in safe condition.
  • Page 4   DANGER ●  This instrument corresponds to L-PE: 230V+10%-15%50Hz. (for some of ranges; L-L: 400V+10%-15%50Hz)   Be sure to use it within this rated voltage. ●  When conducting tests do not touch any exposed metalwork associated with the installation. Such metalwork may become live for the duration of the test.
  • Page 5   WARNING ●  Never open the instrument case - (except for battery replacement and in this case disconnect all leads first) because dangerous voltages are present. Only fully trained and competent electrical engineers should open the case. If a fault develops, return the instrument to your distributor for inspection and repair.

  • Page 6: Procedure Of Removing Cover

    　2. PROCEDURE OF REMOVING COVER Model 6050 has a dedicated cover to protect against an impact from the outside and prevent the operation part, the LCD, and the connector socket from becoming dirty. The cover can be detached and put on the back side of the main body during measurement.

  • Page 7: Features

    　3. FEATURES 3.1 Instrument Layout Fig. 3 1..LCD 2..RCD FUNCTION SELECT SWITCH (MEMORY RECALL SWITCH) 3..0° /180° SELECT SWITCH (ENTER SWITCH) 4..UL VALUE SELECT SWITCH (MEMORY CLEAR SWITCH) 5..TEST BUTTON 6..WIRING CHECK LED LED indication of correct polarity is that the P-E and P-N LEDs are lit.

  • Page 8: Test Lead

    Green-Earth Fig.7 3.3 Optical Adapter Model 8212 (Optional Accessory) For Model 6050, data can be transferred to PC via Optical Adapter Model 8212. Model 8212 is supplied with PC software "KEW REPORT". Fig.8 Model 8212 operates PC/AT compatible machine on Windows 98/ME/2000/XP.

  • Page 9: Test Range (Function)

    IEC/EN61010-1 CATⅢ(300V)-instrument            IEC/EN61010-031 CATⅢ(600V)-test lead Protection degree:  IEC60529(IP54) 3.6 Features Model 6050 has the following features: Three LEDs indicate if the wiring of the circuit ● Wiring check under test is correct. Detects overheating of the internal resistor and ●...
  • Page 10 Select UL (limit of contact voltage value) 25V or 50V. Where Uc (contact voltage) exceeds ● UL value selector UL value at RCD testing, "Uc H" will be displayed without starting the measurement. When connecting Test Lead to circuit, voltage between L-PE is displayed.

  • Page 11: Specification

    　4. SPECIFICATION Measurement Specification Rated Voltage Test Function Range Accuracy (AC) Current L-PE : 20Ω ± (3%rdg+8dgt) +10％ 230V 50Hz -15% ± (3%rdg+8dgt) L-PE : 200Ω LOOP 15mA At L-L measurement: 230V +10% 50Hz ± (3%rdg+12dgt) -15% L-L : 2000Ω 15mA ±...
  • Page 12 Rated Voltage Range Accuracy Function (AC) 100-260V 100-260V Voltage ±(2%rdg+4dgt) L-L corresponding range: L-L corresponding range: Measurement 100-440V 100-440V Accuracy Rated Voltage Function (AC) Trip Current Trip Time ×1/2 -8%∼-2% ×1 ± (1%+3dgt) +2%∼+8% L-PE : ×5 230V +10% 50Hz -15% ±...
  • Page 13 Specifications are based on the following conditions except where otherwise stated.  1. Ambient temperature : 23±5℃ ● Reference  2. Relative humidity : 45% to 75%   conditions  3. Position : horizontal  4. AC power source : 230V,50Hz  5. Altitude : Up to 2000m ●...
  • Page 14 ● Operating Errors of trip current (IEC 61557-6) Function Operating error of trip current ×1/2 -10%∼0% ×1 0%∼+10% ×5 0%∼+10% Auto Ramp -10%∼+10% The influencing variations used for calculating the operating error are denoted as follows: Temperature : 0℃ and 40℃ Earth electrode resistance : Earth electrode resistance(Ω) I n(mA)

  • Page 15: Loop Impedance / Psc Tests

    　5. LOOP IMPEDANCE / PSC TESTS 5.1 Principles of Measurement 5.1-1 Measurement of Fault Loop Impedance and Prospective Fault Current If an electrical installation is protected by over- current protective devices including circuit breakers or fuses, the earth fault loop impedance should be measured.
  • Page 16 For TN systems the earth fault loop impedance is the sum of the following impedances. ● Impedance of the power transformer secondary winding. ● Impedance of the phase conductor from the power transformer to the location of the fault. ● Impedance of the protective conductor from the fault location to the power transformer.
  • Page 17 Practical example of verification of the protection is a TT system according to the international Standard IEC 60364. Fig.11 For this example the maximum value is 1667Ω,the loop tester reads 12.74 Ωand consequently the condition RA is < _ 50/la is met. It is fundamental for this example to test also the RCD to ensure that operation takes place quickly enough to respect the safety requirement.
  • Page 18 Note: ● For a distribution circuit a disconnection time not exceeding 5s is permitted. ● When the protective device is a residual current device (RCD),la is the rated residual operating current I⊿n. For instance in a TN system with a nominal voltage of Uo =230V protected by type gG fuses the la and maximum Zs values could be: Disconnecting time 5s Disconnecting time 0.4s...
  • Page 19 Practical example of verification of the protection is a TT system according to the international Standard IEC 60364. Fig.12 The maximum value of Zs for this example is 2.1Ω(16amp gG fuse,0.4 seconds).The loop tester reads 1.14Ωand consequently the condition Zs < _ Uo / la is met. 5.1.2 Principles of the Measurement of Line Impedance and Prospective Short Circuit Current Line impedance is the impedance, which is measured between Phase-...

  • Page 20: Loop Impedance And Psc Testing

    Method of Impedance test between Line and Neutral and Prospective Short Circuited Current test Fig.13 Method of Impedance test between Line and Line and Prospective Short Circuited Current test Fig.14 5.2 LOOP Impedance and PSC Testing 5.2.1 Preparation (1) Turn Function switch and power on the instrument. Select LOOP or PSC.
  • Page 21 ● LOOP range ● PSC range The Initial value LOOP Range 2000Ω PSC Range 200A 5.2.2 Wiring Check (1) Insert the Test Lead into the instrument.(Fig.15) (2) Connect test lead to object to be tested.(Fig.11,12,13,14) (3) Make sure that the P-E and P-N wiring Check LEDs are lit and the wiring in correct LED is not lit.

  • Page 22: Rcd Tests

    　6. RCD TESTS 6.1 Principles of Measurement The RCD tester is connected between phase and protective connectors 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.
  • Page 23 Type of RCD I⊿n 5I⊿n 40ms 300ms General(G) max. allowed Value max. allowed Value 150ms 500ms max. allowed Value max. allowed Value Selective(S) 50ms 130ms min. allowed Value min. allowed Value Typical examples of instrument connection Practical example of 3-phase + neutral RCD test in a TT system. Fig.16 Practical example of 3-phase + neutral RCD test in a TN system Fig.17...

  • Page 24: Rcd Testing

    6.2 RCD Testing 6.2.1 Preparation (1) Turn Function switch and power on the instrument. Select RCD. (2) Press RCD Function switch to select RCD Function for test. Selected function will be displayed on LCD. For testing RCD's to verify that ×...
  • Page 25 6.2.3 Testing (1) Press the TEST BUTTON Operating time of RCD is displayed on LCD. At Auto Ramp, operating current value of RCD will be displayed. ● × 1/2....The Breaker should not trip. ● × 1.....The Breaker should trip. ● × 5.....The Breaker should trip. ●...

  • Page 26: Uc Tests

    ● The earth electrode resistance of a measuring circuit with a probe shall not exceed table1(page 12). For the RCD range of Model 6050, distortion factor of test current is improved compared with our traditional instruments. Therefore, at operating time measurement of RCD, operating time of some RCD and our traditional instruments may differ a little.

  • Page 27: Auto-Test

    7.2.3 Testing (1) Press the TEST BUTTON. (2) Measured result is displayed on LCD. If the measured result is 100V or more, "UcH V" is displayed on LCD. Note： When Test Lead removed during a measurement, "no" is displayed on LCD and a measurement will be stopped. Please check Test Lead is rightly connected.

  • Page 28: Recall The Stored Data

    (5) Decide it with ENTER SWITCH("ENT" SWITCH). Data will be stored and back to voltage measurement mode automatically. ● By pressing MEMORY MODE EXIT SWITCH ("EXIT" SWITCH) during an operation, can undo the last action. ● When making a measurement, press MEMORY MODE EXIT SWITCH("EXIT"...

  • Page 29: Delete The Stored Data

    (1) Firmly insert the D-SUB 9Pin female connector of Model 8212 into the socket(D-SUB 9Pin male ) of PC. (2) Insert Model 8212 into Model 6050 as shown in fig.18. Test Leads shall be removed from Model 6050 at this time.

  • Page 30: Battery Replacement

    ● Model 8212 system requirements (1) PC/AT compatible machine on which Microsoft Windows ® 98/ME/2000/XP can operate. (2) Pentium 233MHz or more recommended. (3) RAM 64Mbyte or more. (4) SVGA (800X600) or more. XGA(1024X768) recommended. (5) 20MB or more of free hard disk space recommended. (6) One free COM port (7) CD-ROM drive (necessary at installing) ●...

  • Page 31: Servicing

    　11. 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 batteries are in good condition. Please remember to give all the information possible concerning the nature of the fault, as this will mean that the instrument will be serviced and returned to you more quickly.
  • Page 32 DISTRIBUTOR Kyoritsu reserves the rights to change specifications or designs described in this manual without notice and without obligations. 10-10 92-1529B...

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