Kewtech KT66DL 12-in-1 Digital Multifunction Tester

  • 12-in-1 installation and EV test platform
  • Loop, RCD, insulation and voltage testing
  • Supports Type AC, A, F and B RCDs
  • On-board memory with auto safety functions
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£1,049.00 (ex VAT)

£1,258.80 (inc VAT)

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  • 12-in-1 installation and EV test platform
  • Loop, RCD, insulation and voltage testing
  • Supports Type AC, A, F and B RCDs
  • On-board memory with auto safety functions
Free Shipping

Spend over £100 on any new goods order and receive automatic free shipping

Rewards

Points make purchases! For every £1 spent, earn back 1p that can be spent on any future new goods purchase

Our Price Promise

We offer a Price Match Promise! Find an equivalent tester for a cheaper price on a competitor site, and we’ll do our best to match it

Express Delivery & Calibration

Express Delivery is currently unavailable for customers wishing to add calibration to their New Goods order. For more information, visit our Delivery Information page. 

£1,049.00 (ex VAT)

£1,258.80 (inc VAT)

Earn 1049 points

In Stock - Express Delivery Available
FREE Kewtech Jump Leads worth £16.95!
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Kewtech KT66DL 12-in-1 Digital Multifunction Tester

The Kewtech KT66DL 12-in-1 Digital Multifunction Tester is a powerful solution. It is designed for professional electricians and ensures compliance with 18th edition regulations. This tester is ideal for a range of electrical installations, from domestic to industrial setups. It also supports electric vehicle (EV) charge point testing. To do this, it requires pairing with the KEWEVSE adaptor.

Comprehensive Testing Capabilities

The KT66DL offers advanced testing options across voltage, resistance, and current ranges. It features a high current loop test, capable of measuring systems from 55V to 500V, with both 25A and 6A ranges for precise loop impedance measurement. For PSC and PFC testing, it provides dual displays that allow electricians to test fault currents up to 50kA, all while delivering accurate frequency and voltage readings.

This multifunction tester is equipped with full RCD testing coverage, including Type AC, A, F, B, and specific types designed for electric vehicle charging systems. Kewtech’s Anti-Trip Technology (ATT) ensures safe loop testing on RCD circuits, providing a no-trip testing solution even in installations with no neutral, such as 3-phase motor lines.

EV Charge Point Testing

When paired with either the KEWEVSE or KEWEVA adaptor, the KT66DL provides comprehensive testing for electric vehicle charge points, supporting both TN and TT installations. The tester can handle Type B RCDs and RDCDs, ensuring compliance with modern EV infrastructure standards. With phase rotation indicators, CP and PP state adjustment, and oscilloscope output, electricians can confidently test EV charge points with ease.

Durable, versatile, and highly functional, the KT66DL has on-board memory for test result storage and features auto-null and auto-discharge functions for added safety. Whether testing traditional circuits or cutting-edge EV systems, this tester provides electricians with the tools to meet modern electrical testing demands.

Key Features
  • Continuity test at either 200mA or 15mA with adjustable buzzer
  • 100 / 250 / 500 and 1000V insulation test voltages with auto discharge
  • High current loop test range of 2Ω with 0.001Ω resolution
  • Anti-Trip Technology (ATT) for no trip loop L-PE testing
  • 2 wire loop test option for when there is no earth
  • Zs limit: Automatically compares values required by the 18th edition with measured results
  • 55V loop test for testing of 110V CTE circuits
  • RCD: Type AC, A, F, B (general and selective) with auto test and ramp features
  • Earth resistance test 2 and 3 wire options (earth spike kit sold separately)
  • Tests EV and variable RCD’s (with KEWEVSE adaptor)
  • Phase rotation on 3 phase lines with clear indication
  • True RMS voltage measurement from 2 to 600V
  • Advanced on board memory assigns type of test, circuit and DB to test results
  • On screen help ensures correct usage
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Kewtech KT66DL 12-in-1 Digital Multifunction Tester

The Kewtech KT66DL 12-in-1 Digital Multifunction Tester is a powerful solution. It is designed for professional electricians and ensures compliance with 18th edition regulations. This tester is ideal for a range of electrical installations, from domestic to industrial setups. It also supports electric vehicle (EV) charge point testing. To do this, it requires pairing with the KEWEVSE adaptor.

Comprehensive Testing Capabilities

The KT66DL offers advanced testing options across voltage, resistance, and current ranges. It features a high current loop test, capable of measuring systems from 55V to 500V, with both 25A and 6A ranges for precise loop impedance measurement. For PSC and PFC testing, it provides dual displays that allow electricians to test fault currents up to 50kA, all while delivering accurate frequency and voltage readings.

This multifunction tester is equipped with full RCD testing coverage, including Type AC, A, F, B, and specific types designed for electric vehicle charging systems. Kewtech’s Anti-Trip Technology (ATT) ensures safe loop testing on RCD circuits, providing a no-trip testing solution even in installations with no neutral, such as 3-phase motor lines.

EV Charge Point Testing

When paired with either the KEWEVSE or KEWEVA adaptor, the KT66DL provides comprehensive testing for electric vehicle charge points, supporting both TN and TT installations. The tester can handle Type B RCDs and RDCDs, ensuring compliance with modern EV infrastructure standards. With phase rotation indicators, CP and PP state adjustment, and oscilloscope output, electricians can confidently test EV charge points with ease.

Durable, versatile, and highly functional, the KT66DL has on-board memory for test result storage and features auto-null and auto-discharge functions for added safety. Whether testing traditional circuits or cutting-edge EV systems, this tester provides electricians with the tools to meet modern electrical testing demands.

Key Features
  • Continuity test at either 200mA or 15mA with adjustable buzzer
  • 100 / 250 / 500 and 1000V insulation test voltages with auto discharge
  • High current loop test range of 2Ω with 0.001Ω resolution
  • Anti-Trip Technology (ATT) for no trip loop L-PE testing
  • 2 wire loop test option for when there is no earth
  • Zs limit: Automatically compares values required by the 18th edition with measured results
  • 55V loop test for testing of 110V CTE circuits
  • RCD: Type AC, A, F, B (general and selective) with auto test and ramp features
  • Earth resistance test 2 and 3 wire options (earth spike kit sold separately)
  • Tests EV and variable RCD’s (with KEWEVSE adaptor)
  • Phase rotation on 3 phase lines with clear indication
  • True RMS voltage measurement from 2 to 600V
  • Advanced on board memory assigns type of test, circuit and DB to test results
  • On screen help ensures correct usage

 

Technical Specifications
Specification Details
Product name Kewtech KT66DL 12-in-1 Digital Multifunction Tester
Manufacturer part code KT66DL
Applicable standards IEC 61010 CAT III 600V, CAT IV 300V, IEC 61557 series
Dimensions 136 x 235 x 114 mm
Weight 1300 g including batteries
Power supply 8 x AA (LR6) batteries
Voltage measurement range 2 to 600 V AC
Frequency measurement 45 to 65 Hz
Loop impedance range 0 to 2000 Ω auto-ranging
High current loop test 25A and 6A ranges
PFC and PSC measurement Up to 50 kA depending on mode
Continuity test current 200 mA or 15 mA
Insulation test voltages 100V, 250V, 500V, 1000V
Maximum insulation range Up to 2000 MΩ
RCD types supported AC, A, F, B and EV
RCD test currents 10 mA to 1000 mA
Ramp testing 20–110% and EV 30–100%
Phase rotation range 48 to 600 V
Earth resistance testing 2 and 3 wire methods
Memory Internal storage for test results
Safety features Auto-null, auto-discharge, ATT

 

Kewtech KT6x Series Comparison Table
Feature KT63DL KT64DL KT65DL KT66DL
200mA continuity test
15mA continuity test option
Insulation 250V, 500V and 1000V
Insulation 100V
Polarisation and dielectric absorption index
Digital insulation resistance bargraph
SPD testing
PAT testing with optional adaptor
PAT memory, auto ID advance and download
Continuous live voltage warning
55V loop test for 110V CTE systems
High voltage LED torch
Low current ATT non-RCD trip loop test
2 wire low current ATT loop test
EVSE charge point loop tests
High current loop test
PSC and PFC testing
50kA PFC range using 25A test
Loop test noise level indicator
0.001Ω resolution high current loop test ✓ (25A test)
Selectable maximum Zs table
Selectable loop pulse function
Hands free testing
Backlight
RCD Type AC, ACS, A and AS
RCD single, auto and ramp tests
RCD Type F, B, BS and EV
EVSE 6mA DC RCD testing
Uc touch voltage test
Variable RCD testing
RCD auto test results on one screen
Test probe with remote test button
Advanced memory software included
Phase rotation
Earth resistance testing with optional kit
Large LCD display
Dot matrix display
Large colour screen
Protective lid
Carry case Soft Soft Soft Soft
Fused test leads Optional Optional Optional Optional
Help menu
Wiring and lead polarity check
Mains polarity check
Touch pad earth potential limits ✓ (50V/25V) ✓ (50V/25V)
Voltage measurement
Separate L-N, L-PE and N-PE voltage display
Magnetic feet

What’s Included
  • Kewtech KT66DL multifunction tester
  • ACC064SP G7 Test probe
  • ACC065 G7 Test lead set
  • KAMP12 mains lead
  • Test lead pouch
  • Software
  • USB cable
  • Batteries
  • Instruction manual
  • Calibration certificate

QUESTIONS

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