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Testboy TV 455 Instruction Manual

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Testboy
TV 450 / TV 455
Instruction manual
Version 1.0

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Summary of Contents for Testboy TV 455

  • Page 1 ® Testboy TV 450 / TV 455 Instruction manual Version 1.0...
  • Page 2 Mark on your equipment certifies that this equipment meets the requirements of the EU (European Union) concerning safety and electromagnetic compatibility regulations © 2012 TESTBOY No part of this publication may be reproduced or utilized in any form or by any means without permission in writing from TESTBOY.

  • Page 3: Table Of Contents

    ® TV 450/455 Table of contents Table of contents Preface ........................6 Safety and operational considerations..............7 Warnings and notes ..................7 Battery and charging ..................10 2.2.1 New battery cells or cells unused for a longer period .......11 Standards applied ...................12 Instrument description..................13 Front panel ......................13 Connector panel ....................15 Back side......................16...
  • Page 4 ® TV 450/455 Table of contents Fault loop impedance and prospective fault current ........43 Line impedance and prospective short-circuit current / Voltage drop ....45 5.6.1 Line impedance and prospective short circuit current ......46 5.6.2 Voltage drop ....................47 Earth resistance ....................50 PE test terminal ....................52 Data handling......................54 Memory organization ..................54...
  • Page 5 ® TV 450/455 Table of contents Fuse table - IPSC ....................72 Fuse table - impedances (UK).................74 Appendix B - Accessories for specific measurements ........76 Appendix F – Country notes................77 List of country modifications ................77 Modification issues ..................77 C.2.1 AT modification - G type RCD ..............77...

  • Page 6: Preface

    1 Preface Congratulations on your purchase of the TV 450/455 instrument and its accessories from TESTBOY. The instrument was designed on a basis of rich experience, acquired through many years of dealing with electric installation test equipment. The TV 450/455 instrument is professional, multifunctional, hand-held test instrument intended to perform all the measurements required in order for a total inspection of electrical installations in buildings.

  • Page 7: Safety And Operational Considerations

    2.1 Warnings and notes In order to maintain the highest level of operator safety while carrying out various tests and measurements, TESTBOY recommends keeping your TV 450/455 instruments in good condition and undamaged. When using the instrument, consider the following general warnings: symbol on the instrument means »Read the Instruction manual...
  • Page 8 ® TV 450/455 Warnings and notes Warnings related to measurement functions: Insulation resistance Insulation resistance measurement should only be performed on de-energized  objects! Do not touch the test object during the measurement or before it is fully  discharged! Risk of electric shock! When an insulation resistance measurement has been performed on a capacitive ...
  • Page 9 ® TV 450/455 Warnings and notes Continuity functions If voltages of higher than 10 V (AC or DC) is detected between test terminals, the  continuity resistance test will not be performed. Before performing a continuity measurement, where necessary, compensate test ...

  • Page 10: Battery And Charging

     from the battery compartment. Alkaline or rechargeable Ni-Cd or Ni-MH batteries (size AA) can be used.  TESTBOY recommends only using rechargeable batteries with a capacity of 2100mAh or above. Do not recharge alkaline battery cells!  Use only power supply adapter delivered from the manufacturer or distributor of ...

  • Page 11: New Battery Cells Or Cells Unused For A Longer Period

    Ni-Cd cells can be subjected to these chemical effects (sometimes called the memory effect). As a result the instrument operation time can be significantly reduced during the initial charging/discharging cycles of the batteries. In this situation, TESTBOY recommend the following procedure to improve the battery lifetime: Procedure Notes Completely charge the battery.

  • Page 12: Standards Applied

    ® TV 450/455 Standards applied 2.3 Standards applied The TV 450/455 instruments are manufactured and tested in accordance with the following regulations: Electromagnetic compatibility (EMC) EN 61326 Electrical equipment for measurement, control and laboratory use – EMC requirements Class B (Hand-held equipment used in controlled EM environments) Safety (LVD) EN 61010-1 Safety requirements for electrical equipment for measurement, control...

  • Page 13: Instrument Description

    ® TV 450/455 OFront panel 3 Instrument description 3.1 Front panel Figure 3.1: Front panel (picture of TV 455) Legend: 1 LCD 128 x 64 dots matrix display with backlight. 2 TEST Starts measurements. TEST Acts also as the PE touching electrode.
  • Page 14 ® TV 450/455 Front panel Accesses help menus. In RCD Auto toggles between top and bottom parts of results HELP / CAL field. Calibrates test leads in Continuity functions. Starts Z measurement in Voltage drop sub-function. 10 TAB Selects the parameters in selected function. 11 PASS Green indicator Indicates PASS/ FAIL of result.

  • Page 15: Connector Panel

    ® TV 450/455 Connector panel 3.2 Connector panel Figure 3.2: Connector panel Legend: Test connector Measuring inputs / outputs Protection cover Charger socket USB connector Communication with PC USB (1.1) port. Communication with PC serial port and connection to optional PS/2 connector measuring adapters.

  • Page 16: Back Side

    ® TV 450/455 Back side 3.3 Back side Figure 3.3: Back side Legend: Side belt Battery compartment cover Fixing screw for battery compartment cover Back panel information label Holder for inclined position of the instrument Magnet for fixing instrument close to tested item (optional) Figure 3.4: Battery compartment Legend: Battery cells...

  • Page 17: Display Organization

    ® TV 450/455 Display organization 3.4 Display organization Function name Result field Test parameter field Message field Terminal voltage Figure 3.5: Typical function monitor display Battery indication 3.4.1 Terminal voltage monitor The terminal voltage monitor displays on-line the voltages on the test terminals and information about active test terminals.

  • Page 18: Result Field

    ® TV 450/455 Display organization RCD tripped-out during the measurement (in RCD functions). Instrument is overheated. The measurement is prohibited until the temperature decreases under the allowed limit. Result(s) can be stored. High electrical noise was detected during measurement. Results may be impaired.

  • Page 19: Backlight And Contrast Adjustments

    ® TV 450/455 Display organization Figure 3.6: Examples of help screens 3.4.7 Backlight and contrast adjustments With the BACKLIGHT key backlight and contrast can be adjusted. Click Toggles backlight intensity level. Locks high intensity backlight level until power is turned off or the Keep pressed for 1 s key is pressed again.

  • Page 20: Instrument Set And Accessories

    ® TV 450/455 Instrument set and accessories 3.5 Instrument set and accessories 3.5.1 Standard set TV 450/455 Instrument Short instruction manual Calibration Certificate Mains measuring cable Test lead, 3 x 1.5 m Test probe, 3 pcs Crocodile clip, 3 pcs Set of NiMH battery cells Power supply adapter CD with instruction manual, and “Guide for testing and verification of low...

  • Page 21: Instrument Operation

    ® TV 450/455 Function selection 4 Instrument operation 4.1 Function selection For selecting test function the FUNCTION SELECTOR shall be used. Keys: Select test / measurement function: <VOLTAGE TRMS> Voltage and frequency and phase sequence.  <R ISO> Insulation resistance. ...

  • Page 22: Settings

    ® TV 450/455 Settings 4.2 Settings Different instrument options can be set in the SETTINGS menu. Options in both models are: Selection of language,  Setting the instrument to initial  values, Selection of reference standard for  RCD test, Entering Isc factor, ...

  • Page 23: Initial Settings

    ® TV 450/455 Settings 4.2.2 Initial settings In this menu the instrument settings and measurement parameters and limits can be set to initial (factory) values. Figure 4.3: Initial settings dialogue Keys: TEST Restores default settings. Function selectors Exits back to main function menu without changes. Warning: Customized settings will be lost when this option is used! ...

  • Page 24: Memory

    ® TV 450/455 Settings Note: Initial settings (reset of the instrument) can be recalled also if the TAB key is  pressed while the instrument is switched on. 4.2.3 Memory In this menu the stored data can be recalled and deleted. See chapter 6 Data handling for more information.

  • Page 25: Rcd Standard

    ® TV 450/455 Settings 4.2.5 RCD standard In this menu the used standard for RCD tests can be set. Figure 4.6: Selection of RCD test standard Keys: UP / DOWN Selects standard. TEST Confirms selected standard. Function selectors Exits back to main function menu. Maximum RCD disconnection times differ in various standards.

  • Page 26: Isc Factor

    ® TV 450/455 Settings Maximum test times related to selected test current for general (non-delayed) RCD Standard ½×I 2×I 5×I ΔN ΔN ΔN ΔN EN 61008 / EN 61009 300 ms 300 ms 150 ms 40 ms EN 60364-4-41 1000 ms 1000 ms 150 ms 40 ms...
  • Page 27 ® TV 450/455 Settings Keys: UP / DOWN Selects commander option. TEST Confirms selected option. Function selectors Exits back to main function menu. Note: This option is intended to disable the commander’s remote keys. In the case of  high EM interfering noise the operation of the commander’s key can be irregular.

  • Page 28: Measurements

    ® TV 450/455 Voltage, frequency, phase sequence 5 Measurements 5.1 Voltage, frequency and phase sequence Voltage and frequency measurement is always active in the terminal voltage monitor. In the special VOLTAGE TRMS menu the measured voltage, frequency and information about detected three-phase connection can be stored. Phase sequence measurement conforms to the EN 61557-7 standard.
  • Page 29 ® TV 450/455 Voltage, frequency, phase sequence Select the VOLTAGE TRMS function using the function selector switch.  Connect test cable to the instrument.  Connect test leads to the item to be tested (see figures 5.2 and 5.3).  Store voltage measurement result by pressing the MEM key.

  • Page 30: Insulation Resistance

    ® TV 450/455 Insulation resistance 5.2 Insulation resistance The Insulation resistance measurement is performed in order to ensure safety against electric shock through insulation. It is covered by the EN 61557-2 standard. Typical applications are: Insulation resistance between conductors of installation, ...
  • Page 31 ® TV 450/455 Insulation resistance Insulation resistance measuring procedure Select the function using the function selector switch.  Set the required test voltage.  Enable and set limit value (optional).  Disconnect tested installation from mains supply (and discharge insulation as ...

  • Page 32: Resistance Of Earth Connection And Equipotential Bonding

    ® TV 450/455 Resistance of earth connection 5.3 Resistance earth connection equipotential bonding The resistance measurement is performed in order to ensure that the protective measures against electric shock through earth connections and bondings are effective. Two sub-functions are available: R LOWΩ...

  • Page 33: R Lowω, 200 Ma Resistance Measurement

    ® TV 450/455 Resistance of earth connection 5.3.1 R LOWΩ, 200 mA resistance measurement The resistance measurement is performed with automatic polarity reversal of the test voltage. Test circuit for R LOWΩ measurement Figure 5.9: Connection of 3-wire test lead plus optional extension lead Resistance to earth connection and equipotential bonding measurement procedure Select continuity function using the function selector switch.

  • Page 34: Continuous Resistance Measurement With Low Curren

    ® TV 450/455 Resistance of earth connection 5.3.2 Continuous resistance measurement with low current In general, this function serves as standard Ω-meter with a low testing current. The measurement is performed continuously without polarity reversal. The function can also be applied for testing continuity of inductive components. Test circuit for continuous resistance measurement Figure 5.11: 3-wire test lead application Continuous resistance measurement procedure...
  • Page 35 ® TV 450/455 Resistance of earth connection measured resistance. The lead compensation is therefore a very important feature to obtain correct result. Each of R LOWΩ and CONTINUITY has own compensation. symbol is displayed if the compensation was carried out successfully. Circuits for compensating the resistance of test leads prolongation lead Figure 5.13: Shorted test leads...

  • Page 36: Testing Rcds

    ® TV 450/455 Testing RCD 5.4 Testing RCDs Various test and measurements are required for verification of RCD(s) in RCD protected installations. Measurements are based on the EN 61557-6 standard. The following measurements and tests (sub-functions) can be performed: Contact voltage, ...

  • Page 37: Contact Voltage (Rcd Uc)

    ® TV 450/455 Testing RCD Connections for testing RCD Figure 5.17: Connecting the plug commander and the 3-wire test lead 5.4.1 Contact voltage (RCD Uc) A current flowing into the PE terminal causes a voltage drop on earth resistance, i.e. voltage difference between PE equipotential bonding circuit and earth.

  • Page 38: Trip-Out Time (Rcdt)

    ® TV 450/455 Testing RCD Contact voltage Uc RCD type Rated I ΔN proportional to 1.05×I ΔN 2×1.05×I ΔN 1.4×1.05×I ≥ 30 mA ΔN 2×1.4×1.05×I ΔN < 30 mA 2×1.05×I ΔN 2×2×1.05×I ΔN 2×1.05×I ΔN 2×2×1.05×I ΔN Table 5.1: Relationship between Uc and I Δ...

  • Page 39: Trip-Out Current (Rcd I)

    ® TV 450/455 Testing RCD Figure 5.19: Example of trip-out time measurement results Displayed results: t ...Trip-out time, Uc..Contact voltage for rated I ΔN 5.4.3 Trip-out current (RCD I) A continuously rising residual current is intended for testing the threshold sensitivity for RCD trip-out.

  • Page 40: Rcd Autotest

    ® TV 450/455 Testing RCD Displayed results: I ...Trip-out current, Contact voltage at trip-out current I or end value in case the RCD didn’t trip, t ...Trip-out time. 5.4.4 RCD Autotest RCD autotest function is intended to perform a complete RCD test (trip-out time at different residual currents, trip-out current and contact voltage) in one set of automatic tests, guided by the instrument.
  • Page 41 ® TV 450/455 Testing RCD Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Figure 5.21: Individual steps in RCD autotest Bottom Figure 5.22: Two parts of result field in RCD autotest...
  • Page 42 ® TV 450/455 Testing RCD Displayed results: x1 ..Step 1 trip-out time ( , IΔN, 0º), x1 ..Step 2 trip-out time ( , IΔN, 180º), x5 ..Step 3 trip-out time ( , 5×IΔN, 0º), x5 ..Step 4 trip-out time ( , 5×IΔN, 180º), x½...

  • Page 43: Fault Loop Impedance And Prospective Fault Current

    ® TV 450/455 Fault loop impedance 5.5 Fault loop impedance and prospective fault current Fault loop is a loop comprised by mains source, line wiring and PE return path to the mains source. The instrument measures the impedance of the loop and calculates the short circuit current.
  • Page 44 ® TV 450/455 Fault loop impedance Fault loop impedance measurement procedure Select the Zloop Zs rcd sub-function using the function selector switch and  / keys Select test parameters (optional).  Connect test cable to the TV 450/455 Combo.  Connect test leads to the item to be tested (see figure 5.24 and 5.17).

  • Page 45: Line Impedance And Prospective Short-Circuit Current / Voltage Drop

    ® TV 450/455 Line impedance 5.6 Line impedance and prospective short-circuit current / Voltage drop Line impedance is measured in loop comprising of mains voltage source and line wiring. Line impedance is covered by the requirements of the EN 61557-3 standard. The Voltage drop sub-function is intended to check that a voltage in the installation stays above acceptable levels if the highest current is flowing in the circuit.

  • Page 46: Line Impedance And Prospective Short Circuit Current

    ® TV 450/455 Line impedance 5.6.1 Line impedance and prospective short circuit current Circuits for measurement of line impedance Figure 5.28: Phase-neutral or phase-phase line impedance measurement – connection of plug commander and 3-wire test lead Line impedance measurement procedure Select the Z-LINE sub-function.

  • Page 47: Voltage Drop

    ® TV 450/455 Line impedance Un ..Nominal L-N or L1-L2 voltage (see table below), ksc ..Correction factor for Isc (see chapter 4.2.6). Input voltage range (L-N or L1-L2) 110 V (93 V ≤ U < 134 V) L-PE 230 V (185 V ≤...
  • Page 48 ® TV 450/455 Line impedance Step 2: Measuring the voltage drop ΔU sub-function using the function selector switch and / keys. Select the  Select test parameters (Fuse type must be selected).  Connect test cable or plug commander to the instrument. ...
  • Page 49 ® TV 450/455 Line impedance If the measured voltage is outside the ranges described in the table above the  ΔU result will not be calculated. High fluctuations of mains voltage can influence the measurement results (the  noise sign is displayed in the message field).

  • Page 50: Earth Resistance

    ® TV 450/455 Earth resistance 5.7 Earth resistance Earth resistance is one of the most important parameters for protection against electric shock. Main earthing arrangements, lightning systems, local earthings, etc can be verified with the earthing resistance test. The measurement conforms to the EN 61557- 5 standard.
  • Page 51 ® TV 450/455 Line impedance Figure 5.34: Resistance to earth, measurement of a lighting protection system Earth resistance measurements, common measurement procedure Select EARTH function using the function selector switch.  Enable and set limit value (optional).  Connect test leads to the instrument ...

  • Page 52: Pe Test Terminal

    ® TV 450/455 PE test terminal 5.8 PE test terminal It can happen that a dangerous voltage is applied to the PE wire or other accessible metal parts. This is a very dangerous situation since the PE wire and MPEs are considered to be earthed.
  • Page 53 ® TV 450/455 PE test terminal PE terminal test procedure Connect test cable to the instrument.  Connect test leads to the item to be tested (see figures 5.36 and 5.37).  Touch PE test probe (the TEST key) for at least one second. ...

  • Page 54: Data Handling

    ® TV 450/455 Memory organization 6 Data handling 6.1 Memory organization Measurement results together with all relevant parameters can be stored in the instrument’s memory. After the measurement is completed, results can be stored to the flash memory of the instrument, together with the sub-results and function parameters. 6.2 Data structure The instrument’s memory place is divided into 3 levels each containing 199 locations.
  • Page 55 ® TV 450/455 Memory organization Data structure field Memory operation menu Data structure field level:  OBJECT: Default location name (object and its successive number). level:  BLOCK: Default location name (block and its successive number). level:  FUSE: Default location name (fuse and its successive number).

  • Page 56: Storing Test Results

    ® TV 450/455 Storing test results 6.3 Storing test results After the completion of a test the results and parameters are ready for storing ( icon is displayed in the information field). By pressing the MEM key, the user can store the results.

  • Page 57: Recalling Test Results

    ® TV 450/455 Recalling test results 6.4 Recalling test results Press the MEM key in a main function menu when there is no result available for storing or select MEMORY in the SETTINGS menu. Figure 6.3: Recall menu - installation Figure 6.4: Recall menu - measurements structure field selected field selected...

  • Page 58: Clearing Stored Data

    ® TV 450/455 Clearing stored data 6.5 Clearing stored data 6.5.1 Clearing complete memory content Select CLEAR ALL MEMORY in MEMORY menu. A warning will be displayed. Figure 6.6: Clear all memory Keys in clear all memory menu TEST Confirms clearing of complete memory content. Function Exits back to main function menu without changes.

  • Page 59: Clearing Individual Measurements

    ® TV 450/455 Clearing stored data Keys in dialog for confirmation to clear results in selected location: HELP Deletes all results in selected location. Exits back to delete results menu without changes. Function selectors / Exits back to main function menu without changes. TEST 6.5.3 Clearing individual measurements Select DELETE RESULTS in MEMORY menu.

  • Page 60: Renaming Installation Structure Elements

    ® TV 450/455 Clearing stored data 6.5.4 Renaming installation structure elements Default installation structure elements are ‘Object’, ‘D.Board’, ‘Circuit’, ‘Electrode’ and ‘Circuit’. In the PC-Softwarepackage PC SW TV 450 default names can be changed with customized names that corresponds the installation under test. Refer to PC- Software PC SW TV 450 HELP menu for information how to upload customized installation names to the instrument.

  • Page 61: Communication

    ® TV 450/455 Communication 6.6 Communication Stored results can be transferred to a PC. A special communication program on the PC automatically identifies the instrument and enables data transfer between the instrument and the PC. There are two communication interfaces available on the instrument: USB or RS 232. The instrument automatically selects the communication mode according to detected interface.

  • Page 62: Upgrading The Instrument

    ® TV 450/455 Upgrading the instrument 7 Upgrading the instrument The instrument can be upgraded from a PC via the RS232 communication port. This enables to keep the instrument up to date even if the standards or regulations change. The upgrade can be carried with help of a special upgrading software and the communication cable as shown on Figure 6.13.

  • Page 63: Maintenance

    ® TV 450/455 Maintenance 8 Maintenance Unauthorized persons are not allowed to open the TV 450/455 Combo instrument. There are no user replaceable components inside the instrument, except the battery and fuse under rear cover. 8.1 Fuse replacement There is a fuse under back cover of the TV 450/455 Combo instrument. ...

  • Page 64: Technical Specifications

    ® TV 450/455 Technical specification 9 Technical specifications 9.1 Insulation resistance Insulation resistance (nominal voltages 50 V , 100 V and 250 V Measuring range according to EN61557 is 0.15 MΩ ÷ 199.9 MΩ. Accuracy Measuring range (MΩ) Resolution (MΩ) 0.01 0.00 ÷...

  • Page 65: Continuity

    ® TV 450/455 Technical specification 9.2 Continuity 9.2.1 Resistance R LOWΩ Measuring range according to EN61557 is 0.16 Ω ÷ 1999 Ω. Accuracy Measuring range R (Ω) Resolution (Ω) 0.01 0.00 ÷ 19.99 ±(3 % of reading + 3 digits) 20.0 ÷...

  • Page 66: Contact Voltage Rcd-Uc

    ® TV 450/455 Technical specification IΔN × 1/2 IΔN × 1 IΔN × 2 IΔN × 5 RCD IΔ AC A B* IΔN (mA)    100 100    10.5 15 120 150 212 300 707 1000  ...

  • Page 67: Fault Loop Impedance And Prospective Fault Current

    ® TV 450/455 Technical specification 0.2×I ÷ 2.2×I (A type, I <30 mA) 0.05×I ±0.1×I ΔN ΔN ΔN ΔN ΔN ÷ 2.2×I ±0.1×I 0.2×I (B type)* 0.05×I ΔN ΔN ΔN ΔN Trip-out time Measuring range (ms) Resolution (ms) Accuracy 0 ÷ 300 ±3 ms Contact voltage Measuring range (V)

  • Page 68: Rcd Selected

    ® TV 450/455 Technical specification 9.4.2 RCD selected Fault loop impedance Measuring range according to EN61557 is 0.46 Ω ÷ 9.99 kΩ. Accuracy Measuring range (Ω) Resolution (Ω) 0.01 0.00 ÷ 9.99 ±(5 % of reading + 10 digits) 10.0 ÷ 99.9 100 ÷...
  • Page 69 ® TV 450/455 Technical specification Voltage drop (calculated value) Measuring range (%) Resolution (%) Accuracy Consider accuracy of line 0.0 ÷ 99.9 impedance measurement(s)* measuring range……………………… 0.00 Ω ÷ 20.0 Ω *See chapter 5.6.2 Voltage drop for more information about calculation of voltage drop result.

  • Page 70: Resistance To Earth

    ® TV 450/455 Technical specification 9.6 Resistance to earth Measuring range according to EN61557-5 is 2.00 Ω ÷ 1999 Ω. Accuracy Measuring range (Ω) Resolution (Ω) 0.01 0.00 ÷ 19.99 20.0 ÷ 199.9 ±(5% of reading + 5 digits) 200 ÷ 9999 Max.

  • Page 71: Online Terminal Voltage Monitor

    ® TV 450/455 Technical specification 9.7.4 Online terminal voltage monitor Measuring range (V) Resolution (V) Accuracy 10 ÷ 550 ±(2 % of reading + 2 digits) 9.8 General data Power supply voltage......9 V (6×1.5 V battery or accu, size AA) Operation..........

  • Page 72: A Appendix A - Fuse Table

    ® TV 450/455 Appendix A A Appendix A - Fuse table A.1 Fuse table - IPSC Fuse type NV Rated Disconnection time [s] current Min. prospective short- circuit current (A) 32.5 22.3 18.7 15.9 65.6 46.4 38.8 31.9 18.7 102.8 56.5 46.4 26.7...
  • Page 73 ® TV 450/455 Appendix A 919.2 464.2 266.9 1217.2 821.7 663.3 319.1 1567.2 1133.1 964.9 836.5 447.9 2075.3 1429 1195.4 1018 585.4 Fuse type B Rated Disconnection time [s] current Min. prospective short- circuit current (A) Fuse type C Rated Disconnection time [s] current Min.

  • Page 74: Fuse Table - Impedances (Uk)

    ® TV 450/455 Appendix A Fuse type D Rated Disconnection time [s] current Min. prospective short- circuit current (A) 10.8 21.6 32.4 70.2 86.4 172.8 A.2 Fuse table - impedances (UK) Fuse type B Fuse type C Rated Disconnection time [s] Rated Disconnection time [s] current...
  • Page 75 ® TV 450/455 Appendix A Fuse type D Fuse type BS 1361 Rated Disconnection time [s] Rated Disconnection time [s] current current Max. loop impedance (Ω) Max. loop impedance (Ω) 1,536 1,536 8,36 13,12 0,92 0,92 2,624 0,576 0,576 1,36 2,24 0,456 0,456...

  • Page 76: B Appendix B - Accessories For Specific Measurements

    ® TV 450/455 Appendix B B Appendix B - Accessories for specific measurements The table below presents standard and optional accessories required for specific measurement. The accessories marked as optional may also be standard ones in some sets. Please see attached list of standard accessories for your set or contact your distributor for further information.

  • Page 77: C Appendix F - Country Notes

    ® TV 450/455 Appendix C C Appendix F – Country notes This appendix F contains collection of minor modifications related to particular country requirements. Some of the modifications mean modified listed function characteristics related to main chapters and others are additional functions. Some minor modifications are related also to different requirements of the same market that are covered by various suppliers.
  • Page 78 ® TV 450/455 Appendix C contact voltage pre-test in the measuring procedure also influences the RCD and it takes a period to recover into idle state. Time delay of 30 s is inserted before performing trip-out test to recover type RCD after pretests and time delay of 5 s is inserted for the same purpose for type RCD.
  • Page 79 ® TV 450/455 Appendix C...
  • Page 80 ® TV 450/455 Appendix C...

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