testo 770-1 - Hook clamp meter

Order-Nr.  0590 7701

  • Unique hook-on function separates and grabs wires, without using your hands

  • Retractable post makes hook release fast and easy

  • Inrush (starting) current capture, APO (Auto Power Off), and Min / Max / Hold

The testo 770-1 hook clamp meter is ideally suited for electrical work in HVAC applications. Testo’s unique hooking clamp design can be used to separate and grab wires. The easy hook-off retractable post releases the wires when testing in tight spaces. You can safely work without using your hands.

Product Description

The testo 770 series identifies the testing in-process and automatically selects the correct meter configuration, which saves you time and increases your accuracy.

The testo 770 series of instruments is rich in the features HVAC techs need and want, including TRMS, starting current, and frequency measurement.

 

Delivery Scope

testo 770-1 hook clamp meter 400 A, including test leads, 3 AAA batteries, instruction manual, quick start guide, and certificate of conformity
DC voltage

Measuring range

1.0 to 600.0 V

Resolution

max. 1 mV

Accuracy

± (0.8 % of mv + 3 Digit)

AC voltage

Measuring range

1.0 mV to 600.0 V

Resolution

max. 1 mV

Accuracy

± (1.0 % of mv + 3 Digit)

DC current

Measuring range

0.1 to 400 A

Resolution

max. 0.1

Accuracy

± (2 % of mv + 5 Digit)

AC current

Measuring range

0.1 to 400 A

Resolution

max. 0.1 A

Accuracy

± (2 % of mv + 5 Digit)

Resistance

Resolution

max. 0.1 Ohm

Measuring range

0.1 to 40.00 MOhm

Accuracy

± (1.5 % of mv + 3 Digit)

Capcitance

Resolution

max. 0.01 nF

Measuring range

10 nF to 100.0 μF

Accuracy

± (1.5 % of mv + 5 Digit)

Frequency

Measuring range

10 nF to 100.0 μF

Accuracy

±(0.1 % + 1 Digit)

General technical data

Operating humidity

0 to 80 %rH

Weight

13.33 oz. / 378 g

Dimensions

9.8 x 3.8 x 1.7 in. / 249 x 96 x 43 mm

Operating temperature

14° to 122 °F / -10 to +50 °C

Product colour

Black

Standards

EN 61326-1; EN 61010-2-032; EN 61140

Battery type

3 x AAA

Display type

LCD

Display size

2 lines

Interface

2 measuring jacks

Storage temperature

5° to 140 °F / -15 to +60 °C

Overvoltage Category

CAT IV 600V; CAT III 1000V

Authorizations

CSA; CE

Internal_resistance

11 MOhm (AC / DC)

Instrument Measurement Functions

Diode test

yes

Continuity testing

yes

Display ligthing

yes

Hold

yes

MinMax

yes

True RMS

yes

Inrush current measurement

yes

Display (counts)

4,000

Autom. measurement parameter detection

yes

Ideal for non-contact current measurement on tightly packed cables

  • Fully retractable pincer arm, auto AC/DC, large two-line display, true root mean square (TRMS) measurement, starting current measurement

Overview of applications

  • Current consumption measurement, testing voltage supply in live wires, measuring the ionization flow of heating systems, continuity tests on switching components, resistance measurement of sensors or motor windings