AEMC Instruments C.A 773 Offers

Features

• Full autotest
• Detection of stray voltages
• Unipolar phase detection (a single contact)
• Two-pole phase-sequence testing with 2-wire method = a third hand is not required
• Continuity test with audible and visual indication (R < 100 Ω)
• RCD trip test
• Complies with EN 61243-3 and IEC 61010 1000 V CAT IV
• Removable lead and test probe
• Extended continuity test with visual indication for: R < 0.5 to 2.999 kΩ
• Digital display
• Delivered complete and ready to use

Standards

Voltage absence testing: a clearly-defined procedure

• In the context of work on installations connected to the electricity distribution network, the standards stipulate that the measurements must be performed with the power off to avoid electrical hazards (EN 50110-1 standard, DIN VDE 0682-401, NF C 18-510, etc.). To secure the installation and ensure that it is non-current-carrying, there is a procedure called separation which imposes the use of a voltage absence tester

Beyond the standard recommendations

• A comprehensive integrated autotest with indication of the type of fault and tester also displays a text message for complete information
• Benefits from IP65 protection for indoor and outdoor use, which is significantly higher than the IP54 rating required by the standard.
• Extended class: for extreme environments, the C.A 771 can be used for measurements from -22 to 140°F (type S)
• Audible and visual continuity indication up to 100 Ω, in compliance with the recommendation in appendix B of the standard
• The test probes are removable to meet specific requirements or to comply with the legislation in certain countries

Functions

AC and DC voltage testing

Voltage detection takes priority, is automatic and is indicated by distinct visual and audible signals:

• Visual: bargraph
• Audible: loud intermittent beep

Stray voltages can be detected by pressing two buttons simultaneously (double command) in order to switch to lowimpedance mode.

An (Extra-low voltage) LED is a redundant safety feature which lights up when the voltage present is higher than the ELV (50 V AC/120 V DC). The higher the voltage present, the faster it flashes

Single-pole phase detection

You can detect the phase simply by establishing contact with one of the test probes.

Two-wire phase rotation with microprocessor

Simple and quick, the two-wire phase rotation function with microprocessor is useful in all circumstances, including on installations powered by an electrical generator set or behind an isolating transformer.

Continuity and resistance testing

By pressing the continuity button, you can check that the conductors are correctly connected. Continuity (R < 100 Ω) is indicated by a loud, continuous audio signal. In addition, the C.A 771 offers an extended continuity test and can be used to display the higher values via 3 thresholds (2 kΩ, 6 kΩ and 300 kΩ). The C.A 773 displays the resistance value directly.

Residual Current Device (RCD) trip test up to 30 mA

By simultaneously pressing the double command, you can cause a fault current sufficient to trip the RCD to flow through a low-impedance load.

Applications

• All indoor and outdoor low-voltage applications

Voltage up to 1000 V AC/1400 V DC at up to 800 Hz

The specifications of the C.A 771 and C.A 773 mean they can be used for work on all LV electrical networks, whether they are electricity distribution networks or the more specific networks encountered in naval or aviation applications.

Climatic conditions

The type-S extended climatic class allows use in extreme temperature conditions. This means it offers an operating range from -22 to 140°F for applications such as:

• Installations at altitude (mountains, etc.), underground installations, etc
• Refrigeration installations, greenhouses, etc
• Service vehicles (emergency, military, etc.)
• The IP65 protection rating also ensures maximum protection against solid pollutants (dust) and liquid pollutants (projections), allowing both indoor and outdoor use

Ergonomics specially designed for use in the field

• Digital display (C.A 773)
• Two molded test probes to ensure excellent handling while protecting against falls and shocks
• Built-in LED to light the point of measurement
• Removable test probes and 2 positions provided on the VAT for 16 (0.63") or 19 (0.75") mm spacing