MICROTEST 8740K Series Cable Harness Tester 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. The 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. It supports PC connectivity software and BAR Code scanning, meeting the requirements for automated line testing in wire and connector production.
Selection
| 8740K Series | |||
| Model | 8740NAK | 8740NK | |
| AC Hi pot Test | 100V-700V | - | |
| DC Hi pot Test | 50V-1000V | 50V-1000V | |
| Test Pin | 1024 | ||
SPEC
| 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 | 0.01S - 60S | |
| 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 (W*H*D) |
1024PIN | ||
| 435x270x360 mm | |||
| Weight | 1024PIN | 18Kg | |
| Interface | RS-232, USB Host, Print, Remote | ||
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 |
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.
Power application PCB/FPC multi points withstanding test.
| Conductance | Detect the contact resistance in the cable connector. The conduction resistance is over the standard. |
| HI pot Test |
Put a stabile high voltage on cable to make sure the quality of DUT
The result will judge by the rate of insulation resistance. Insulation resistance defect may cause DUT be penetrated or leakage current under high voltage.
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.
|
| 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 |
8740NAK offer result calculation which can show the number of pass/fail and the reason caused.
Standard Accessories
| Power Cord | |
| 64P/3KV cable (AK-8600F3) |  |
| Adapter board (FX-000C16) |  |
Optional Accessories
| PC Link Software | |
| Remote Cable | |
| Calibration Kits (KB-8740K1) |  |
| Multiple DUT Testing Expand Box (874001) |  |
| Universal Fixture Board (FB-8600M1) |  |
| Intermi ence O/S Fixture (FX-000C18) |  |
| Networking Fixture |
 |
| Foot Switch (7600010) | |
| Printer | |
