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Summary of Contents for TESTO 770
- Page 1 770 - Clamp meter 0590 7701 0590 7702 0590 7703 0590 3770 Instruction manual...
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Page 2: Table Of Contents
Measuring A AC or A DC ........18 7.2.1.1 Automatic measuring mode ....18 7.2.1.2 Manual measuring mode....18 7.2.2 Measuring µA AC or µA DC (testo 770-2/-3 only) ................ 19 7.2.2.1 Automatic measuring mode ....19 7.2.2.2 Manual measuring mode....19... - Page 3 770-1/-2 ..........27 9.2.2 testo 770-3 (0590 7703) ........28 9.2.3 testo 770-3 (0590 3770 – as of 2024) ....30 Bluetooth module (testo 770-3 only) ......33 Tips and assistance ............... 34 10.1 Questions and answers ..........34 10.2...
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Page 4: Observe Prior To Use
• The measuring instrument may only be used with a maximum voltage of 600 V (testo 770-1/-2/-3 (0590 7703)) and 1000 V (testo 770-3 (0590 3770)). • Measurements that are dangerously close to electrical installations must only be carried out under the direction of a qualified electrician. - Page 5 3 Safety instructions • Prevent the instrument from being exposed to extreme heat by direct prolonged sunlight. This is the only way to ensure that the instrument functions perfectly and has a long service life. • If the instrument needs to be opened, this should only be carried out by an expert.
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Page 6: Intended Use
The instrument conforms to measurement category CAT IV with a rated voltage of 600 V to earth for testo 770-1/-2/-3 (0590 7703), to category CAT IV with a rated voltage of 600 V and CAT III with a rated voltage of 1000 V to earth for testo 770-3 (0590 3770). -
Page 7: Overview
5 Overview Overview Display and control elements Control keys LC display Clamp trigger (Clamp/hook closed) 3b Clamp trigger (Clamp/hook opened) Clamp/hook (closed) 4b Clamp/hook (opened) HOLD key Rotary switch Grip area On the rear: Battery compartment Input jack for voltage, resistance, continuity, capacitance, diode, frequency and µA measurements 10. -
Page 8: Lc Display
Battery capacity 2 – 0 %, instrument switches off flashes and automatically acoustic signal emitted 13 Automatic power-off function is activated 14 Measuring units 15 Diode test and continuity 16 Measuring units 17 Analog display (testo 770-3 only) 18 Indication of polarity in bar chart (testo 770-3 only) -
Page 9: Control Key Functions
AUTO In the default setting, the instrument is in mode when voltage, current (testo 770-1/-2/-3 (0590 7703)), RCDC (resistance, capacitance and diode with continuity) is being measured. Brief keypress function (<1 s) Long keypress function (>2 s) -
Page 10: Further Functions
5 Overview Function Selection Automatic mode for resistance, continuity, diode test and capacitance (testo 770-1/-2/-3 (0590 7703)). RCDC control Automatic mode for resistance and continuity. Manual selection of diode test and capacitance with (testo 770-3 (0590 3770)). Automatic mode for µA measurement. Manual selection of... -
Page 11: Max/Min/Avg
<1 s each time. >2 s or [HOLD]. > Exit function: press This function can be activated in all measuring modes (this function is not available at capacitance measurement with testo 770-1 and testo 770-2). AUTO AC/DC AUTO When pressing... -
Page 12: Explanation Of Icons
Continuous double or reinforced insulation complies with category II DIN EN 61140 / IEC 536 The product testo 770-1/-2/-3 (0590 7703) is certified for the US and Canadian markets, in accordance with the applicable American and Canadian standards. The product testo 770-3 (0590 3770) is certified for the US and Canadian markets, in accordance with the applicable American and Canadian standards. -
Page 13: Operating The Instrument
Different measuring modes can be selected via the rotary switch. When the instrument is in current mode , it automatically detects the range and the type of measurement, AC or DC (testo 770-1/-2/-3 (0590 7703)). When the instrument is in voltage mode , it automatically detects the range and the type of measurement, AC or DC. -
Page 14: Switching The Instrument On
6 Operating the instrument Switching the instrument on > Switch on: turn the rotary switch to the required measuring mode. The instrument switches on. Switching the background illumination on/off > To switch on/off: briefly press the key. The background illumination switches off automatically within 2 minutes. It is possible to switch the background illumination on/off in all measuring modes. -
Page 15: Using Testo 770-3 With Testo Smart App
(testo 770-3) You need a tablet or smartphone with the testo Smart App already installed on it to be able to establish a Bluetooth connection. You can get the App for iOS instruments in the App Store or for Android instruments in the Play Store. -
Page 16: Overview Of The App Operating Controls
6 Operating the instrument 6.4.3 Overview of the App operating controls Open main menu Switch between the views (Live, Graphic, Table) Display of the measurement period Display of connected measuring instruments incl. readings. Buttons [New], [Start]/[Stop] [Save] Open Configuration menu Edit reading display Further symbols on the user interface (without numbering) One level back... -
Page 17: Carrying Out A Measurement
> Measuring circuit must be de-energized. The measuring instrument may only be used in circuits up to a maximum voltage of of 600 V (testo 770-1/-2/-3 (0590 7703)) / 1000 V (testo 770-3 (0590 3770)). The nominal cross-section of the connection cable must be taken into account in order to ensure safe connection (e.g. -
Page 18: Measuring A Ac Or A Dc
AUTO A testo 770-1/-2/-3 (0590 7703): The instrument is in mode. testo 770-3 (0590 3770): The instrument is in manual measuring mode. Switch to automatic measuring mode: press >2 s. Enclose the live conductor and centre it in the jaws. -
Page 19: Measuring Μa Ac Or Μa Dc (Testo 770-2/-3 Only)
7 Carrying out a measurement 7.2.2 Measuring µA AC or µA DC (testo 770-2/-3 only) 7.2.2.1 Automatic measuring mode For every current measurement always zero the instrument with before measuring. Switch instrument on: set rotary switch to The instrument switches on. -
Page 20: Manual Measuring Mode
Serious risk of injury to the user and/or destruction of the instrument during resistance testing. > Test object must be de-energized. External voltages will distort the measurement result. 7.4.1 testo 770-1/-2 7.4.1.1 Manual measuring mode Switch instrument on: set rotary switch to The instrument is switched on. -
Page 21: Testo 770-3
AUTO > Switch back to mode: press >2 s. Power measurement (testo 770-3 only) For the power measurement, two measurements are carried out at the same time. The voltage of the measurement object is measured via the jack, input jack and using two test leads. The current of the measurement object must be measured using the clamp meter. -
Page 22: Frequency Measurement
The following minimum values are necessary for correct display of frequency with voltage and/or current measurement: Voltage: 1 V Current: 1.5 % of the measuring range (testo 770-1/-2/-3 (0590 7703)) 0.5 % of the measuring range (testo 770-3 (0590 3770)) Temperature measurement (optional) -
Page 23: Carrying Out Temperature Measurement
Switch instrument on: set rotary switch to The instrument switches on. AUTO A The instrument is in mode (testo 770-1/-2/-3 (0590 7703)) resp. A AC mode (testo 770-3 (0590 3770)). Enclose the live conductor and centre it in the jaws. -
Page 24: Service And Maintenance
Put the battery compartment cover back on and screw down. Maintenance When operated in accordance with the instruction manual, the instrument does not require any particular maintenance. If a malfunction occurs during operation, the ongoing measurement should be stopped immediately. Send the instrument to Testo-Industrial-Services GmbH for checking. -
Page 25: Calibration
8 Service and maintenance Calibration In order to maintain the specified accuracy of the measurement results, Testo recommends calibrating the instrument once a year. Send the instrument to Testo Service for calibration. Storage Store the instrument in dry, closed rooms. -
Page 26: Technical Data
3 x 1.5 V (AAA / IEC LR03) Battery status display Batt. icon appears from <3.9 V Display 3 3/4 digit, LC display Display range testo 770-1/-2: 4000 digits testo 770-3: 6000 digits Polarity indicator automatic Overload protection for µA high-impedance (testo 770-2/-3 only) -
Page 27: More Technical Data
9 Technical data More technical data 9.2.1 testo 770-1/-2 Resolution Accuracy Feature Measuring range DC voltage 4.000 V 1 mV ± (0.8 % of m.v. + 3 digits) 40.00 V 10 mV 400.0 V 100 mV 600 V AC voltage 4.000 V... -
Page 28: Testo 770-1/-2
Does not include the measurement error of the temperature probe. The specified accuracy is the sum total of the measurement errors of the thermocouple adapter and the testo 770. The lower measuring ranges are only specified from 5% (does not apply to DC current / AC... - Page 29 9 Technical data Feature Measuring Resolution Accuracy range Resistance 60.00 Ω 0.01 Ω ± (1.5 % of m.v. + 3 digits) 600.0 Ω 0.1 Ω 6.000 kΩ 1 Ω 60.00 kΩ 10 Ω 600.0 kΩ 100 Ω 6.000 MΩ 1 k Ω 60.00 MΩ...
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Page 30: Testo 770-3 (0590 3770 - As Of 2024)
Does not include the measurement error of the temperature probe. The specified accuracy is the sum total of the measurement errors of the thermocouple adapter and the testo 770 The lower measuring ranges are only specified from 5% (does not apply to DC current / AC... - Page 31 9 Technical data Resolution Accuracy Feature Measuring range DC current - jaws [A] 60.00 A 0.01 A ± (2.0 % of m.v. + 5 digits) 600.0 A 0.1 A - jack [μA] 600.0 μA 0.1 μA ± (1.5 % of m.v. + 5 digits) AC current - jaws [A] 3.00 A...
- Page 32 9 Technical data Resolution Accuracy Feature Measuring range Apparent power 600.0 VA 0.1 VA ± (15 % of m.v. + 15 digits) 6.000 kVA 0.001 kVA for I = 1 A to 10 A, V > 10 V 60.00 kVA 0.01 kVA ±...
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Page 33: Bluetooth Module (Testo 770-3 Only)
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) Bluetooth module (testo 770-3 only) The use of the wireless module is subject to the regulations and... -
Page 34: 10 Tips And Assistance
Wait up to 30s. > If no connection is established reset Bluetooth connection, restart testo Smart App and try again. If we have not been able to answer your question, please contact your dealer or Testo Customer Service. For contact details, please visit www.testo.com/service-contact. - Page 36 Testo SE & Co. KGaA Celsiusstr. 2 79822 Titisee-Neustadt Germany Tel.: +49 7653 681-0 E-Mail: info@testo.de www.testo 0970 7700 en 11 – 04.2024...
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