2-Wire cable harness tester MICROTEST 8740K series

Price: Contact

Model	8740NAK / 8740NK
Manufacturer	MICROTEST
Power supply	115/230 Vac ±10%
Weight	18 Kg
Size	435x270x360 mm
Condition	Stocking
Warranty	12 months

Details description
Specifications
Video
Download document
Accessory

2-Wire cable harness tester MICROTEST 8740K series employs two-wire measurement technology and is suitable for products that do not require very low resistance measurements, considering the cost factors of the testing fixture.

I. Specification of 2-Wire cable tester MICROTEST 8740K series

2-Wire cable harness tester MICROTEST 8740K series with testing capabilities include: continuity impedance, open/short circuit, AC/DC safety withstand voltage, IR insulation, and component testing (resistor/capacitor/diode).

The testing points can be selected up to 1024 points, with a maximum AC withstand voltage output of 700V and a maximum DC withstand voltage output of 1000V.

MICROTEST 8740K series supports PC connectivity software and BAR Code scanning, meeting the requirements for automated line testing in wire and connector production.

Test pin 1024
Number of test file up to 500 sets
Open/Short
Conductance resistance test
Safety test (AC Hipot/ DC Hipot/ IR / Leakage current)
DC insulation
Component test (R/C/Diode)
Quick conductance
Multiple DUT test
Auto diagnosis and correction function
Support USB Host, RS-232, Remote bar code scan and print function
Automatically identify the normal or reverse plugin of wire or connectors.

Application of MICROTEST 8740K series:

Automobile harnesses
Wire harnesses/connectors for consuming electronic products.
Power application PCB/FPC multi points withstanding test.

II. Main features of 2-Wire cable harness tester MICROTEST 8740K series

Automobile harness:

Most of harnesses are made of copper. Several to dozen thin harness were covered by plastic insulating tube. They are soft and not easy to break. The normal cross-sectional area are 0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 4.0, 6.0. There are all with different load current values for different power devices.

Specification	Application
0.5	Dashboard light, side light, door light
0.75	Plate light
1.0	Fog light、indicator
1.5	Head light, horn
2.5-4	Main power cable、Generator cable

2-wire-cable-harness-tester-microtest-8740k-series

Common production defect:

Insulation layer or dislocation might happen during manufacturing process. That may cause poor connection or insulation.

Electrical inspection:

Conductivity test : Detect the contact resistance problem on the terminal
Hipot test : Detect the circuit contact fit the insulation value
Resistance test : Detect the O/S problem on the contact point of the terminal.

Measurement items:

The measurement items of 8740NAK/8740NK cable or harness tester have (1) Open/Short;(2) Conductance; (3) Components; (4) AC Hipot; (5) DC insulation/ Hipot; (6) Quick conductance (7) Intermittence O/S, and (8) Quick Intermittence open circuit. It supports RS-232, USB Host, Print, Remote interfaces.

2-wire-cable-harness-tester-microtest-8740k-series

Power application PCB/FPC multi points withstanding test:

Conductance

Detect the contact resistance in the cable connector.

The conduction resistance is over the standard.

Hipot test

Put a stabile high voltage on cable to make sure the quality of DUT

§ DC insulation

The result will judge by the rate of insulation resistance. Insulation resistance defect may cause DUT be penetrated or leakage current under high voltage.

§ Arc Test

Some high precision product for automobile and military can’t accept any arc under high voltage.

Inspect the loop contact in the connector fit the request of insulation and voltage.

Insulation resistance between loop is lower than the standard.

The voltage resistance is lower than the standard that cause leakage current..

2-wire-cable-harness-tester-microtest-8740k-series

Open test/ Short test:

Open/Short test

Make sure the contact of wire work properly.

Open: The wire should be contact, but it doesn’t

Short: The wire shouldn’t be contacted, but it does.

Intermittence O/S

Make sure the cable has intermittent open/short defection

There is damage on part of cable, that cause instant contact or not.

2-wire-cable-harness-tester-microtest-8740k-series

Cable tester MICROTEST 8740NAK offer result calculation which can show the number of pass/fail and the reason caused:

2-wire-cable-harness-tester-microtest-8740k-series

View More Compact

Technical specifications of 2-Wire cable harness tester MICROTEST 8740K series

8740K Series
Model	8740NAK	8740NK
AC Hi pot Test	100V-1000V	–
DC Hi pot Test	50V-1000V	50V-1000V
Test Pin	1024

Safety Hi pot Test
AC Hipot Leakage Current	0.01mA -5mA (Must do correction before test when spec. is lower than 0.1mA)
DC Hipot Leakage Current	0.1µA-1000µA
DC Hipot Insulation Resistance	1MΩ-1.2GΩ (Please read the manual carefully before doing this test)
Hipot Output Accuracy	±5%
Hipot Measurement Accuracy	±5%
Rated Output	5Vdc
Hipot Measurement Time	0.01seconds – 60seconds
Wire Specifications	Maximum allowable capacitance 5μF
Low Voltage Electrical Test
Measuring Mode	2-Wire Test
Conductance	100mΩ-52Ω
Intermittence Conductance	100mΩ-52Ω
O/S Intermittence O/S Quick Intermittence open circuit	1kΩ-100kΩ
O/S Determinal Judge	●
Single-Side Test	●
Component test
Resistance	Measurement Range	100mΩ-2MΩ
	Level Signal	2.4V (Fixed)
	Current Signal	35mA
Capacitance	Measurement Range	10pF-3µF
	Level Signal	1.2V (Fixed)
	Frequency Signal	AUTO Gear (Fixed) 48Hz/480Hz/4.8kHz/48kHz
Diode	Measurement Range	0-7V
Other Function
Advanced Functions	Programmable continuous test / Pin search/Auto-diagnosis
Test Scan Mode	Auto, Manual, External Trigger
Measurement Signal	Low Voltage Measurement Signal
Panel	System/Rapid /Edit / Function
Indicator	Pass/Fail HV LED red-green indicator lights / Screen Display /Sound

System:

Operation	Manual, Auto, Remote Control
Built-in Storage	Number of test file up to 500 sets
Power Supply	Fixed Voltage	115/230 Vac ±10%
	Frequency	60/50Hz
Power consumption	250VA
Environment	Temperature	0℃-40℃
	Humidity	RH≦75%
Display	320*240 dot-matrix display
Dimension (WHD)	1024PIN 435x270x360 mm
Weight	18Kg
Interface	RS-232, USB Host, Print, Remote