Kewtech KT1790 Voltage Tester

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  • GS38 compliant.
  • Slender probes fits into recessed terminals such as RCBOs.
  • Perform voltage, continuity, phase rotation and polarity tests.

rrp £99.00

now £59.00 (Ex. VAT) £70.80 (Inc. VAT)

rrp £99.00


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"Measure AC and DC voltages up to 690 on a digital display with this GS38 compliant voltage tester."

  • Description

    Kewtech KT1790 Voltage Tester

    The KT1790 Voltage and continuity tester measures AC and DC voltages up to 690V, providing clear LED indication and a digital display of the detected voltage level.

    With GS38 compliant slender probe tips and designed to the new international standards IEC 61243-3, IEC 61010-1 and measurement category CAT IV 600V, the KT 1790 is a versatile voltage detector that can also perform continuity, single pole phase, polarity and phase rotation testing as well as a self diagnostic test to ensure correct operation.

    Kewtech KT1790 Features

    • UK specific probe tips to GS38
    • Slender probe tips that fit into recessed terminals such as RCBOs
    • Measures AC and DC voltages up to 690V
    • LCD voltage level indication
    • Digital display with 0.1 V resolution for exact reading
    • Luminous Oversize LED indication
    • Continuity test with audible tone
    • Single pole phase test
    • Polarity indication
    • Phase rotation testing
    • Self diagnostic test
    • Built-in torch light
    • IP65 rating protects against Dust & Water ingress

    Kewtech KT1790 Two Pole Voltage Detector Kit

    We can also supply you with a ELC900 Voltage tester kit comprising of a Kewprove Proving Unit, zip up carry case and the KT1790 two pole voltage tester. 

  • Specification

    Voltage Test

    • Voltage Range: 12 - 690V AC/DC
    • Peak Current: Is <3.5mS (at 690V)
    • Internal Battery Consumption: Approx. 80mA (battery 3V, measuring 690V AC)
    • Tolerance (Threshold voltage): Light on at more than: 7±3V (12V LED), 18±3V (12V LED), 37.5V±4V (50V LED) 75%±5% of nominal voltage (120/230/400/690V LED)
    • Response Time: <0.6S at 100% of each nominal voltage

    Single Pole Phase Test

    • Voltage Range: 100~690V AC (45~100Hz)

    Phase Rotation Test

    • System: Three-phase 4-wire system
    • 200~690V phase-to-phase
    • (100~400V earth-to-phase)
    • AC 50/60Hz

    Continuity Test

    • Detection Range: 0~400K Ω + 50% (23 ± 5ºC)
    • Test Current: Approx. 1.5µA (battery 3V, 0 Ω)
    • Internal Battery Consumption: Approx. 80mA (battery 3V, 0 Ω)


    • Safety standards: IEC 61010-1:2010, IEC 61243-3:2010, IEC 601010-031:2008, Category: CAT III 690, CAT IV 600V polution deg 2 IEC 61557-7:2007
    • IP Rating IP65 (IEC60529)
    • Dimensions 243 x 64 x 26 mm
    • Weight 190g (including batteries)
    • Batteries 3V (2 x 1.5V AAA / LR03)
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  • Delivery Information

    At we understand the importance of a reliable delivery service when shopping online. Especially when the goods are often essential to your working day. If your goods are required by a certain date please feel free to contact us for an honest and realistic indication whether this can be met.

    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text so you will not have to wait around all day. We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink on a fully traceable and manageable service.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 3-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £7.50
    • Pre-Noon Next Working Day Delivery (on select products only) at £9.50*
    • Pre-10.30am Next Working Day Delivery (on select products only) at £18.50*
    • Saturday Pre-Noon Delivery (on select products only) at £14.50*
    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

    NOTE! For next working day or Saturday/Sunday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only.

    Customers outside the UK: exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail with your name, address and the items you would like to order for an accurate shipping quote.