Intended Use; Technical Data - testo 755 Bedienungsanleitung

All manuals and user guides at all-guides.com

4 Intended use

The instrument may only be used under the conditions and for the purpose
for which it was designed:
• Current measurement, voltage testing in the AC/DC range of
6 to 600 V (testo 755-1) or 6 to 1000 V (testo 755-2), continuity testing /
resistance testing
• Only use the instrument within the specified measuring ranges of the
following overvoltage categories:
- Voltage measurement: CAT IV 600V, CAT III 1000 V
- Current measurement: CAT IV 300V, CAT III 600 V
The instrument must not be used for the following circumstances:
• In potentially explosive atmospheres: the instrument is not explosion-
proof!
• When there is rain or other precipitation: risk of electric shock!

5 Technical data

Voltage testing
Figures correspond to +23 °C ± 5 °C at <80% rel. humidity. Temperature
coefficient: 0.15 x specified accuracy per 1 °C (<18 °C and >28 °C).
Feature
Voltage range
Resolution
Tolerance
Frequency range
Acoustic
signalling
Voltage detection
Polarity detection
Range detection
Internal load
Current
Operating time
Recovery time
Automatic power on
Reading memory (HOLD)
Overload indicator
Measurement category
Values
testo 755-1: 6 - 600 V AC/DC
testo 755-2: 6 - 1000 V AC/DC
0.1 V
6 to 49.9 V: ± (1.5% of the display value + 5
digits)
50 to 600 V / 1000 V: ± (1.5% of the display
value + 3 digits)
DC voltage, 14 Hz – 400 Hz
≥ 50 V AC, ≥ 120 V DC
Automatic
Automatic
Automatic
Approx. 3.5 W at 1000 V
Is < 3.5 mA at 1000 V
30 s
240 s
> 6 V
testo 755-1: 6 - 600 V AC/DC
testo 755-2: 6 - 1000 V AC/DC
testo 755-1: > = 630 V AC/DC, LC display
shows OL
testo 755-2: > = 1050 V AC/DC, LC display
shows OL
CAT III 600 V / CAT IV 300 V
5 Technical data
17