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MICROTEST 8761NA-256P 256-Pin 4-Wire Cable & Harness Tester, 700 V AC / 1 kV DC

£3431.00 (£4117.20 inc. VAT)

Available on back-order

Availability: Stock models delivered next working day (UK only) for orders placed before 16:30 (Mon - Fri)

SKU: 8761NA-256P Categories: , Brand:

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Description


MICROTEST 8761NA-256P 256-Pin 4-Wire Cable & Harness Tester, 700 V AC / 1 kV DC

The MICROTEST 8761NA-256P is a 256-pin 4-wire cable and wire harness tester with continuity measurement from 1 mΩ to 52 Ω. Separate current and voltage-sense connections reduce the effect of fixture lead resistance when checking low-resistance conductors and contacts. It combines AC Hipot testing up to 700 V with DC Hipot testing up to 1 kV, insulation resistance covering 0.1 MΩ–1.2 GΩ, open/short testing, intermittent-fault detection and resistor, capacitor and diode checks. This is the largest base-series configuration, with additional test points in the taller 190 mm enclosure. Storage for up to 500 test files and RS-232, USB Host, printer and remote interfaces support repeat production work.

Key Features
  • 4-wire measurement with 64, 128, 256 test-point configurations.
  • Continuity resistance from 1 mΩ to 52 Ω, with a 10 mA measurement current.
  • Open/short, intermittent continuity, intermittent open/short, single-side testing and terminal judgement.
  • N: DC Hipot up to 1 kV; NA: up to 700 V AC and 1 kV DC; FA: up to 1 kV AC and 1.5 kV DC.
  • Insulation resistance covering 0.1 MΩ–1.2 GΩ.
  • Component checks: resistance 50 mΩ–20 MΩ, capacitance 10 pF–12 µF and diode voltage 0.1–6.8 V.
  • Automatic circuit learning for connection-pattern inspection.
  • Up to 500 stored test files, programmable continuous testing, pin search and self-diagnosis.
  • RS-232, USB Host, Print and Remote interfaces; optional PC Link and production accessories.
Applications
  • Production inspection of cable and wire harness assemblies with up to 256 test points.
  • Low-resistance conductor and contact checks using four-wire fixtures.
  • Electrical inspection of automotive and consumer-electronics harnesses, connectors and flexible flat cables.
  • Detecting intermittent connections during handling or movement of the assembly.
  • Checking resistors, capacitors and diodes incorporated into cable assemblies.
  • Dielectric-strength and insulation testing within the selected model’s ratings.

Product Images

Combine continuity, connection, insulation and component checks in one bench instrument. Choose 64, 128 or 256 test points and the Hipot capability required for your assembly.

Integrated cable and harness testing

Separate current and voltage-sense connections reduce fixture lead resistance errors. Continuity measurement from 1 mΩ to 52 Ω supports low-resistance cable and connector checks.

Four-wire measurement down to 1 mΩ

Select continuity, open/short, component and intermittent-fault checks to suit the assembly. Store up to 500 test files for repeat production work.

Build a repeatable test sequence

Check that intended connections are present and unintended connections are absent. Automatic circuit learning helps establish the wiring pattern for inspection.

Identify open and short circuits

Apply DC Hipot and insulation resistance tests across the series. NA models add AC testing up to 700 V; FA models reach 1 kV AC and 1.5 kV DC. N models provide DC testing only.

Check dielectric strength and insulation

Measure resistors, capacitors and diodes incorporated into cable assemblies. Component ranges include resistance from 50 mΩ to 20 MΩ and capacitance from 10 pF to 12 µF.

Test components within the assembly

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Combine continuity, connection, insulation and component checks in one bench instrument. Choose 64, 128 or 256 test points and the Hipot capability required for your assembly.
Separate current and voltage-sense connections reduce fixture lead resistance errors. Continuity measurement from 1 mΩ to 52 Ω supports low-resistance cable and connector checks.
Select continuity, open/short, component and intermittent-fault checks to suit the assembly. Store up to 500 test files for repeat production work.
Check that intended connections are present and unintended connections are absent. Automatic circuit learning helps establish the wiring pattern for inspection.
Apply DC Hipot and insulation resistance tests across the series. NA models add AC testing up to 700 V; FA models reach 1 kV AC and 1.5 kV DC. N models provide DC testing only.
Measure resistors, capacitors and diodes incorporated into cable assemblies. Component ranges include resistance from 50 mΩ to 20 MΩ and capacitance from 10 pF to 12 µF.

Product Videos

YouTube Video
MICROTEST | 8761 Cable Tester

Documentation

Application Notes


Specification 8761N 8761NA 8761FA
Measurement method 4-wire 4-wire 4-wire
Available test points 64 / 128 / 256 64 / 128 / 256 64 / 128 / 256
AC Hipot voltage Not available 100–700 V 100–1,000 V
DC Hipot voltage 50–1,000 V 50–1,000 V 50–1,500 V
AC Hipot leakage current Not available 0.01–5 mA 0.01–5 mA
AC arc detection settings Not available 1–48 1–48
DC Hipot leakage current 0.1–1,200 µA 0.1–1,200 µA 0.1–1,200 µA
DC arc detection settings 1–48 1–48 1–48
Insulation resistance 0.1 MΩ–1.2 GΩ 0.1 MΩ–1.2 GΩ 0.1 MΩ–1.2 GΩ
Hipot output accuracy ±5% ±5% ±5%
Hipot measurement basic accuracy ±5% ±5% ±5%
Rated output (manufacturer description) 5 V DC 5 V DC 5 V DC
Hipot measurement time 0.01–60 s 0.01–60 s 0.01–60 s
Maximum allowable DUT capacitance 5 µF 5 µF 5 µF
Continuity resistance 1 mΩ–52 Ω 1 mΩ–52 Ω 1 mΩ–52 Ω
Continuity test current 10 mA 10 mA 10 mA
Intermittent continuity 20 Ω–2 kΩ 20 Ω–2 kΩ 20 Ω–2 kΩ
O/S, intermittent O/S and quick intermittent open circuit 1–100 kΩ 1–100 kΩ 1–100 kΩ
Single-side testing and O/S terminal judgement Supported Supported Supported
Component resistance 50 mΩ–20 MΩ 50 mΩ–20 MΩ 50 mΩ–20 MΩ
Resistance signal 0.1–3 V 0.1–3 V 0.1–3 V
Component capacitance 10 pF–12 µF 10 pF–12 µF 10 pF–12 µF
Capacitance signal 0.1–1.2 V 0.1–1.2 V 0.1–1.2 V
Capacitance frequency AUTO; optional 48 Hz / 480 Hz / 4.8 kHz / 48 kHz AUTO; optional 48 Hz / 480 Hz / 4.8 kHz / 48 kHz AUTO; optional 48 Hz / 480 Hz / 4.8 kHz / 48 kHz
Diode voltage 0.1–6.8 V 0.1–6.8 V 0.1–6.8 V
Test files Up to 500 Up to 500 Up to 500
Display 320 × 240 dot-matrix 320 × 240 dot-matrix 320 × 240 dot-matrix
Advanced functions Programmable continuous testing / pin search / self-diagnosis Programmable continuous testing / pin search / self-diagnosis Programmable continuous testing / pin search / self-diagnosis
Scan modes Automatic / manual / external trigger Automatic / manual / external trigger Automatic / manual / external trigger
Controls System / Rapid / Edit / Function System / Rapid / Edit / Function System / Rapid / Edit / Function
Indication Pass/Fail and HV indicators / screen / sound Pass/Fail and HV indicators / screen / sound Pass/Fail and HV indicators / screen / sound
Operation Manual / automatic / remote Manual / automatic / remote Manual / automatic / remote
Interfaces RS-232 / USB Host / Print / Remote RS-232 / USB Host / Print / Remote RS-232 / USB Host / Print / Remote
PC Link Supported; software is an optional ordering item Supported; software is an optional ordering item Supported; software is an optional ordering item
Supply 115 / 230 V AC ±10%, 50 / 60 Hz 115 / 230 V AC ±10%, 50 / 60 Hz 115 / 230 V AC ±10%, 50 / 60 Hz
Operating environment 15–35°C; ≤70% RH 15–35°C; ≤70% RH 15–35°C; ≤70% RH
Dimensions W × H × D 64P: 435 × 145 × 406 mm; 128P: 435 × 145 × 406 mm; 256P: 435 × 190 × 406 mm 64P: 435 × 145 × 406 mm; 128P: 435 × 145 × 406 mm; 256P: 435 × 190 × 406 mm 64P: 435 × 145 × 406 mm; 128P: 435 × 145 × 406 mm; 256P: 435 × 190 × 406 mm
Weight 64P: 8.44 kg; 128P: 9.3 kg; 256P: 14 kg 64P: 8.44 kg; 128P: 9.3 kg; 256P: 14 kg 64P: 8.44 kg; 128P: 9.3 kg; 256P: 14 kg
Power consumption 64P: 70 VA; 128P: 70 VA; 256P: 100 VA 64P: 70 VA; 128P: 70 VA; 256P: 100 VA 64P: 70 VA; 128P: 70 VA; 256P: 100 VA
Voltage qualification Manufacturer note: at a 5 MΩ setting or below 5 µA, maximum test voltage is 650 V; AC tolerance setting range 0.01–5 mA. Consult the manual for the test conditions. Manufacturer note: at a 5 MΩ setting or below 5 µA, maximum test voltage is 650 V; AC tolerance setting range 0.01–5 mA. Consult the manual for the test conditions. Manufacturer note: at a 5 MΩ setting or below 5 µA, maximum test voltage is 650 V; AC tolerance setting range 0.01–5 mA. Consult the manual for the test conditions.

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