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Summary of Contents for Kewtech KT64DL
- Page 1 KT64DL Multifunction Installation Tester Operating Instructions kewtechcorp.com...
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Page 2: Table Of Contents
Index Safety information and explanation of symbols used .......... 3 Features of the KT64DL ..................5 Special Polarity Test Function................... 6 Audible tones ......................7 Overview of the switches and LCD ..............8 Test lead inputs ......................9 Continuity Test Function ..................10 Continuity Test Procedure .....................10... -
Page 3: Safety Information And Explanation Of Symbols Used
Safety information and explanation of symbols used Because the KT64DL is a multifunction tester used for testing both live and dead circuits there are different safety issues that apply to the individual functions. Before using your KT64DL please read these instructions paying particular attention to the general safety warnings below and those at the start of each section. -
Page 4: Rcd Trip Time
Alkaline batteries type AA / LR6 in accordance with the polarity shown The KT64DL complies fully with the requirements of EN61010. The following table details the operating ranges for the individual functions compliant with the performance requirements of EN61557. -
Page 5: Features Of The Kt64Dl
The KT64DL is packed with design features that maximise both convenience and safety. These include: Large display To give the clearest results the KT64DL uses a large auto-backlit LCD which makes reading the test results easy even when used in poorly lit areas. Auto shut down To preserve battery life when not in use the KT64DL incorporates an Auto-Off function that powers the unit down after three minutes of inactivity. -
Page 6: Special Polarity Test Function
Special polarity test function It is a little known fact that a system can be reverse wired with Line (Phase) to earth/ neutral and earth/neutral to Line (Phase). The sockets will all work and conventional loop testers will show and test that everything is correct despite this very dangerous wiring condition. -
Page 7: Audible Tones
Audible tones A simple selection of audible tones is used to supplement the visual display. These help the user by providing intuitive feedback during testing. In addition to warning about dangerous or unstable supply conditions they provide a very quick confirmation that the measurement process is taking place and, upon completion of the test, a warning if the results are likely to be regarded as a failure. -
Page 8: Overview Of The Switches And Lcd
Overview of the switches and LCD Test lead inputs multiplier Continuity PFC-Loop Null Button RCD type RCD Recall selector Hands free Button Test Button Polarity test Function Selector touch pad area The Primary display of the large LCD shows the result of the test being conducted. At the same time a secondary display area shows supporting information e.g. -
Page 9: Test Lead Inputs
Test lead inputs The test lead input/ output terminals are separated into two groups by the clear sliding interlock cover. When slid to the left (figure 1) the interlock cover exposes only the Blue/Black terminal (marked -) and the Brown/Red terminal (marked +). These are used for the Continuity and Insulation test functions. -
Page 10: Continuity Test Function
Traditionally this would mean that the resistance of the test leads would have to be measured and manually deducted from each subsequent reading. The KT64DL has a handy feature known as lead nulling that does this calculation for you. -
Page 11: Hands Free Continuity Testing
The word ‘NULL’ will now appear in the display and all subsequent continuity tests conducted by pressing the Orange test button will automatically deduct this value before displaying the result. To confirm that this is working press the Orange test button with the prod tips still connected together and the display should show zero resistance. -
Page 12: Insulation Test Function
Connect the Brown test probe to the phase conductor and the Blue probe to the other conductor being tested and press the Orange test button. During Insulation testing the KT64DL will audibly indicate that measurement is being made by emitting a steady beeping sound. -
Page 13: Hands Free Insulation Testing
MΩ symbol extinguishes and the V symbol is displayed. This indicates that the SPD test is ready. Press the test button. The KT64DL will ramp up to 1000 V and will stop at the DC breakdown voltage. The equivalent AC voltage is calculated using the formula AC voltage = DC voltage dived by 1.41. -
Page 14: Loop Test Functions
Important note for calibration check box users: The smart loop test system used by the KT64DL is immune to sudden high value changes such as voltage spikes. As a result when changing calibration or check box loop values the tester or the supply must be switched off between changes Over temperature. -
Page 15: Pfc/Psc
This will reduce the chances of the RCD tripping as a result of combined leakages. PFC/PSC In both Loop test modes the KT64DL will also display the supply voltage and at the touch of the PFC button the PFC/PSC will be displayed. Test lead configuration The KT64DL Loop test function can be used with 2 different types of connecting lead. -
Page 16: Lead Configuration For No-Trip Testing
Lead configuration for No-Trip testing In No-trip mode the tester can be used with the mains lead KAMP12 when testing at 13A socket outlets, or the distribution board lead set ACC063 for testing at other points in the circuit. In No-trip mode the 3 colour coded prods/crocodile clips of the test lead should be connected to the corresponding Line, Neutral and Earth terminals. -
Page 17: Loop Test Procedures
Mains supply wiring and voltage test When first connected to a mains supply the KT64DL will automatically conduct a safety test to ensure that the Live, Neutral and Earth conductors are all connected correctly and that the supply voltage is in the acceptable range (207-253V). -
Page 18: High Current Test (Ze)
High current test (Ze) The high current should only be conducted with the distribution board test lead set ACC063 configured in 2-wire mode. Do not use this function with the KAMP12 mains lead or the distribution lead set in 3-wire configuration. Rotate the function selector to the HIGH position. -
Page 19: Rcd Test Function
For the most commonly encountered type AC/A 30mA RCD the test process is even simpler. Just turn the rotary selector to the ‘30mA AUTO’ setting select the RCD type required and the KT64DL will conduct all six required tests at the single touch of a button. Pass or Fail result In addition to displaying the time taken for the RCD to trip the KT64DL will also indicate whether it has passed or failed the test requirements of the BS7671. -
Page 20: Ramp Test
The KT64DL also includes a diagnostic Ramp test feature. In this mode rather than applying a steady fault current and measuring the time taken for the RCD to trip, the KT64DL gradually increases the fault current and identifies the level of additional leakage at which the RCD trips. -
Page 21: Rcd Test Procedure
Connect the 4mm plugs of the chosen test lead to the corresponding L, N & E terminals of the KT64DL and connect the other end to the socket or circuit terminals under test. If using the distribution board test lead set ACC063 observe the correct polarity by connecting the Brown probe to the Live conductor, Blue to Neutral and Green to Earth. -
Page 22: 30Ma Automatic Test
The main display shows that the fault current was applied for over 2000 milliseconds (2 seconds) without tripping the RCD. The secondary display confirms that this passes the requirements of the BS7671. In the event of the RCD failing the test and tripping within 2 seconds at half the rated current the main display will show the trip time and the secondary display will show ‘FAIL’. -
Page 23: Specifications And Tolerances
The KT64DL EV auto test can functionally test RCDs for EV chargers that use RDC-DD protective devices with 30mA type A RCD. The KT64DL should be used in conjunction with a suitable EV adaptor such as the KEWEVA or KEWEVSE Connect to the EV adaptor and bring the EV charger online. -
Page 24: Insulation Test Range Accuracy
Insulation Test Range Accuracy Test Voltage Ranges (Auto Range) Tolerance (@20°C) � ±3% ±1 digit 0.01 to 9.99 M � 250V ±3% ±1 digit 10.0 to 99.9 M � ±6% ±1 digit 100 to 2000 M � ±3% ±1 digit 0.01 to 9.99 M �... -
Page 25: Loop Test Range Accuracy
Loop Test Range Accuracy Range Accuracy � ± 5% ± 5 digits No trip 0.00 – 9.99 � ± 3% ± 3 digits No trip 10.00 – 99.9 � ± 3% ± 3digits No trip 100 - 500 � ± 3% ± 3 digit High Current 0.00 - 500 PSC/ PFC PSC accuracy is derived from measured loop impedance specification and measured voltage... - Page 26 KEWEVA The KEWEVA is the markets innovative EV charge point testing adapter that’s straight forward to use. Compatible with your KT64DL, this optional extra will allow you to test EV charge points efficiently and with confidence using your multifunction tester.
- Page 27 Compatible Test Leads KAMP12 Mains lead. ACC063 3 wire non-fuse DB test lead set with piggy back earth. ACC50MTL High performance 50M extension reel. JUMPLD1 Jump leads to facilitate R1 + R2 and insulation testing. kewtechcorp.com...
- Page 28 Express Cal Unit 6, Shaw Wood Business Park, Shaw Wood Way, Doncaster DN2 5TB T: 0345 646 1404 (select option 2) E: expresscal@kewtechcorp.com Kewtech Corporation Limited Suite 3 Halfpenny Court, Halfpenny Lane, Sunningdale T: 0345 646 1404 E: sales@kewtechcorp.com kewtechcorp.com...
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