Kewtech KT64 User Manual

Kewtech Corporation Ltd.
Midas House, Unit 2b
Stones Courtyard
High Street, Chesham
Buckinghamshire HP5 IDE
www.kewtechcorp.com
40
1. Safe Testing ...…………………………………………………….….……. 1
2. Instruments Layout ..………………………………………………..…….. 3
3. Accessories ……………………………………………………………….. 4
4. Features .…………………………………………………………………… 4
5. Specification .………………………………………………………………. 6
5.1 Measurement Specification ..………………………………………… 6
5.2 Operating error ..……………………………………………….……. 9
5.3 General Specification ..….………………………………………….. 10
5.4 Applied standards .………………………………………………….. 11
5.5 List of Display Message .…………………………………………… 12
6. Configuration ..…………………………………………………………… 13
7. Continuity(resistance) tests ……………………………………………... 14
7.1 Test procedure ……………………………………………………... 14
7.2 2Ω Buzzer ....……………………………………………………… 16
8. Insulation tests ..…………………………………………………………. 16
8.1.1 The nature of insulation resistance .…………………………….. 16
8.1.2 Capacitive current ..……………………………………………… 17
8.1.3 Conduction current ………………………………………………. 17
8.1.4 Surface leakage current ……………………………………….... 18
8.1.5 Total leakage current .………………………………………….... 18
8.2 Damage to voltage sensitive equipment .……………………….... 19
8.3 Preparation for measurement .…………………………………….. 19
8.4 Insulation resistance measurement ...…………………………...… 20
9. LOOP/PSC/PFC test ………………………………………...………...… 22
9.1 Principles of Measurement of fault loop impedance and PFC …... 22
9.2 Principles of measurement of line impedance and PSC ………….. 26
9.3 Operating instructions for LOOP and PSC/PFC ……………...…… 28
9.3.1 Initial Checks …………………………………………………...... 28
9.3.2 Measurement of LOOP and PSC/PFC …………………………… 30
10. RCD tests ..……………………………………………………………..... 31
10.1 Principles of RCD Measurement ………………………………..... 31
10.2 Operating Instructions for RCD .……………………………...…. 33
10.2.1 Initial Checks ………………………………………………...…. 33
10.2.2 RCD Measurement ...………………………………………..….. 34
11. Volts ..………………………………………………………………...…... 36
12. Touch Pad ………………………………………………………………. 36
13. Back Light ………………………………………………………….……. 36
14. General ...…………………………………………………………...……. 36
15. Battery replacement ..…………………………………………………… 37
16. Fuse replacement …………………………………………………...…… 37
17. Servicing and Calibration …………………………………………...…… 38
18. Case and strap assembly ....…………………………………………….. 39
Contents

Kewtech KT64 Specifications

General

Brand	Kewtech
Model	KT64
Category	Measuring Instruments
Language	English