Like most organisations we use cookies on our site, these allow us to improve your experience on our site, provides us with measurement and analytical data, and allows us to make use of the latest digital marketing capabilities - if you want to know more about cookies and how you can control them see our cookie policy here, if you are happy for us to use cookies then please click the button opposite.
The images provided are for illustrative purposes only. Please refer to product description.

Kewtech KT65DL Multifunction Tester

The KT65DL is an 8-in-1 testing instrument - it can test continuity, insulation resistance, loop impedance, PSC (L-N/L-L), PFC (L-PE), RCD, earth, phase rotation and voltage with all results shown on a large-size backlit display on the front of the tester

Important Calibration Information

This instrument comes with a manufacturers calibration certificate.
Please see 'Calibration Options' in the description for more details.

Next Day Delivery (subject to availability)

£699.00 exc. VAT £838.80 inc. VAT £1,782.00 inc. VAT
  • Manufacturers Calibration Certificate
  • Phase Rotation Service
  • Downloadable
  • Auto RCD
  • Backlit LCD Display
  • Non Trip Loop Testing
  • Memory Function
  • FreeDelivery
  • 30DayMoneyBack
Required Fields
  • Description
  • Features & Specification
  • Resources
  • Delivery (updated)

Free Gifts

This instrument comes complete with your choice of free gift from the drop-down menu above. Choose from a calibration voucher for next 
year or a 50m R2 wander lead. How about any one of the IET Guidance Notes, or a quality two-pole tester? 
Whatever you choose you can be sure you're getting a fantastic deal at Instrument Sales & Service.

Kewtech KT65DL Multifunction Tester

The KT65DL is an 8-in-1 testing instrument - it can test continuity, insulation resistance, loop impedance, PSC (L-N/L-L), PFC (L-PE), RCD, earth, phase rotation and voltage with all results shown on a large-size backlit display on the front of the tester.

One of the easiest to use multifunction testers on the market today, the Kewtech KT65DL is packed full of functionality and ensures your testing, installation and certification work is always in line with 17th edition rules and regulations. It's also specifically designed for the UK market and is full of advanced functions and testing procedures to ensure you can get all your work done using one comprehensive testing tool.

*Calibration Options:

This instrument comes complete with a manufacturers calibration certificate. Please be aware that these certificates are generic and may also be time lapsed. If you would prefer a personalised full traceable calibration certificate applied to the equipment before dispatch, then please select this option from the drop-down menu above, an additional calibration charge will apply.


The KT65DL Is Supplied With:

  • Kewtech KT65DL Multifunction Tester
  • ACC064SP G7 Test Lead with Remote Test Button
  • ACC065 G7 Test Lead Set
  • Batteries
  • Instruction Manual
  • Calibration Certificate
  • KAMP 12 Mains Lead
  • Test Lead Pouch
  • Soft Carry Case

Key Features:

  • Easy to use
  • Phase rotation in line with new 17th edition requirements
  • Advanced memory with free software
  • NEW Anti-Trip Technology for full no trip LOOP testing on all RCD types
  • Test button in probe as well as lockdown test button for ‘hands free’ testing
  • Easy PFC & PSC measurement without the need to alter test probes
  • 250, 500 & 1000V insulation tests with auto discharge
  • Additional LED for warning of high voltage output in insulation test mode
  • Memory for test lead resistance compensation
  • Backlit display
  • Auto-test memory for RCD testing with all results shown on one screen, so no scrolling
  • Conducts phase to phase loop tests
  • End of line calibration certificate included
  • Can be used with rechargeable batteries
  • Complies with BS7671 (Part P)

Which Kewtech Multifunction Tester is Right For Me?

Kewtech MFT Selector

ISSWWW and Kewtech

One of our longest standing manufacturer partnerships and a brand that sells well day in day out for solid dependability and innovation at the price point.

Kewtech manufacture innovative, accurate and reliable test equipment that enables UK electrical contractors to undertake their testing obligations quickly and efficiently.

A product with the “Kewtech” brand has been specifically designed for the UK market by a team with many years of industry experience. We pride ourselves on developing and manufacturing products that have a real benefit to the industry.

Kewtech has consistently introduced industry firsts, like our Lightmate testing adaptors, the Pat Adaptor, the MFT with PAT testing plus download and our award-winning RB1 Replacement Lamp. Our 17th Edition multifunction testers lead the way in ease of use, loop accuracy and repeatability of reading.

Kewtech KT65DL Multifunction Tester


Open Circuit
Voltage (DC)
Short Circuit
Range Accuracy
5V±20% Greater than
20 / 200 / 2000Ω
0 ~ 0.19Ω
0.2 ~ 2000Ω

Insulation Resistance

Open Circuit
Voltage (DC
Rated Circuit
Range Accuracy
250V+40% -0% 1mA or greater @ 250kΩ 20 / 200MΩ Auto-Ranging 20 ~ 200MΩ
500V+30% -0% 1mA or greater @ 500kΩ 20 / 200 / 2000MΩ Auto-Ranging 200 ~ 2000MΩ
1000V+20% -0% 1mA or greater @ 1MΩ 20 / 200 / 2000MΩ Auto-Ranging 200 ~ 2000MΩ

Loop Impedance

Function Rated Voltage Nominal Test Current at 0Ω External Loop: Magnitude/ Duration Range Accuracy
L-PE 100 ~ 260V
20Ω: 6A/20ms
200Ω: 2A/20ms
2000Ω: 15mA/360ms
20 / 200 / 2000Ω
L-PE (ATT) 100 ~ 260V
L-N: 6A/30ms
N-PE: 10mA
approx. 4s
20 / 200 / 2000Ω
Auto-Ranging L-N
< 20Ω
L-N/L-L 100 ~ 500V 50/60Hz 20Ω: 6A/20ms 20Ω ±(3%rdg+4dgt)

PSC (L-N/L-L) / PFC (L-PE)

PSC 100~500V
6A/20ms 2000A/20kA
PSC accuracy is derived from measured loop impedance specification and measured voltage specification
PFC 100~260V
PFC (ATT) 100~260V 50/60Hz L-N: 6A/30ms N-PE: 10mA/approx. 4s 2000A/20kA Auto-Ranging


Function Rated Voltage Accuracy
Trip Current Trip Time
AC Type A Type
X1/2 230V+ 10%-15% 50/60Hz -8%~2% ±10% ±(1%rdg+3dgt)
X1 +2%~+8%
X5 +2%~+8%
Ramp ±4%
Auto Depending on the accuracy at each function
Measurement sequence:
X1/2 0˚->X1/2 180˚->X1 0˚->X1 180˚-> X5 0˚-> X5 180˚
Measurements with X5 aren’t carried out when current is 300mA or more
Continuity / Insulation / Loop / PSC ranges uses the rolling average


Measuring Frequency Range Accuracy
825Hz 20/ 200 / 2000Ω Auto-Ranging 20Ω range: ±(3%rdg+0.1dgt) 200 / 2000Ω range: ±(3%rdg+3dgt) (Auxiliary earth resistance 100±5%)

Phase Rotation

Rated Voltage Remarks
50-500V 50/60Hz Correct phase sequence: are displayed “1.2.3” and mark
Reversed-phase sequence: are displayed “3.2.1” and mark


Function Rated Voltage Range Accuracy
Volts 25~500V
25~500V ±(2%rdg+4dgt)
Frequency 25~500V
45~65Hz ±(0.5%rdg+2dgt)

Delivery Notices (Updated March 29th 2021)

During the current situation surrounding the effects of the Coronavirus pandemic, logistics from every company are under immense pressure to deliver goods on time.
Coupled with manufacturers on reduced output due to more stringent working practices and a global shortage of component parts to supply UK manufacturing, we have taken the decision to 
temporarily limit our services rather than let our customers down amid these unprecedented circumstances.
We hope you will understand our position on this and we apologize unreservedly for the inconvenience we know it will cause.

Please note that ALL orders placed before 3:00pm are shipped same-day (subject to stock and any additional services required).
The stated transport times above have some scope for adjustment built-in for the Covid-19 situation. Carriers themselves also have their own extended workload and limitations at this time which are unfortunately beyond our control.

Orders requiring calibration 

Whilst we take the greatest care to get all orders dispatched and delivered to you in the stated time frame, orders received PM and requiring
calibration may on occasion miss dispatch that day, according to the complexity of the calibration. Be assured they will ship on the next dispatch
this in most cases should not add more than 24 hours to your delivery.

Bank/Public Holidays

Predicted delivery times are based on regular trading days Monday to Friday. Public holidays, bank holidays and weekends are outside the usual scope
of our dispatch and subject to activities/holidays of our carriers and therefore may incur additional days lead time to your order.

*UK Mainland (Revised March 2021)

Service  Price 
Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value OVER £75.00 ex VAT - Order by 3:0pm FREE
Standard FREE 2-3 Day Courier Delivery – UK Mainland only - Zones A & B - Order value UNDER £75.00 ex VAT - Order by 3:0pm £4.75
Next WORKING Day (excludes Saturdays, Sundays and public holidays)  – UK Mainland only - Zones A & B  - ANY order value - Order by 3:0pm      £7.75
Saturday ANYTIME Delivery - Order by 3:0pm £9.95

New Postage Map Sept 2018>

Delivery Surcharges

Because of the high cost of carriage, we regretfully need to apply a surcharge on all deliveries made in the following regions:

  • Zones A & B  - Mainland delivery rates apply. 
  • Zone C - Scottish Highlands (Charges are calculated at the checkout).
  • Zone D - Outer Hebrides, Orkney Isles, Shetland Isles, Isle of Man, Scilly Isles, and Channel Islands (Charges are calculated at the checkout).
  • Zone E - Northern Ireland (Charges are calculated at the checkout).
  • Zone F - Republic of Ireland (Charges are calculated at the checkout).

Offshore Services

All offshore deliveries are a 3-4 day service as standard. This includes Channel Islands, Northern & Southern Ireland, Scottish Islands, Isle of Man and the Scilly Isles.

International delivery

International delivery charges are automatically added to your order at the checkout. For any questions regarding international deliveries please contact us at


All export inquiries should be directed to the export division before placement of order.

If no shipping option is available to your selected country please call us FREE on 0800 0224 060 to purchase your items.
All stated prices are subject to VAT at the current rate where applicable.