NT 644

Technical features NT 644

Test points

max. 1024

Low voltage test DC

Test voltage

max. 25 V (optional up to 250 V)

Test current

max. 25 mA (optional up to 2 A)

Threshold continuity test

1 Ohm – 1 kOhm (optional four-wire measurement from 1 mOhm)

Threshold short-circuit test

20 kOhm – 1 MOhm (optional up to 100 MOhm)

Component test

Resistors: 1 Ohm – 1 MOhm (optional up to 100 MOhm)

Capacitors: 10 nF – 20 mF (optional from 10 pF)

Diodes, Zener diodes, LEDs, suppressor diodes

Dielectric strength test AC

Test voltage

100 – 1500 V

Test current

max. 2,1 mAeff, 3 mAp, safety current limited according to EN 50191 (optional max. 4,2 mAeff, 6 mAp)

Dielectric strength test DC

Test voltage

40 – 2150 V

Test current

max. 3 mA, safety current limited according to EN 50191(optional max. 6 mA)

Insulation test DC

Test voltage

40 – 2150 V

Threshold

500 kOhm – 2 GOhm (optional up to 10 GOhm)

Function test (optional)

The NT 644 can be expanded, so that the test of relays, time relays, contactors, indication lamps, function procedures etc. can be carried out automatically. Therefore stimulus cards and stimulus sources are available beside powerful software tools and editors in NT Control.

General

Power supply

100 – 240 VAC (50 – 60 Hz)

Interfaces

Extern interface with 3 opto-coupled inputs and 3 potential free outputs (expandable)

Serial interfaces RS232 / USB 2.0

Network

Pin number probe

Dimensions (W x H x D, approx.)

450 mm x 410 mm x 520 mm

Scope of delivery

NT 644, main cable, pin number probe, USB flash drive with NT Control and documentation in PDF format, mating connector and service connector for safety loop