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Atec T-R-DVS3 User Manual

Dvs3 mk2, Relay test system

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DVS3 mk2

Relay Test System

The DVS3 mk2 is the new smaller, lighter, higher power

version of the T&R DVS3, offering three times the output

power of the original DVS3. The exceptionally easy to

understand user interface of the DVS3 is retained, allowing

simple testing of complex voltage and loss of mains

protection systems.

Equally at home in a commissioning, maintenance, or

laboratory environment, the DVS3 mk2 is a truly flexible

system. The DVS3 mk2 has been designed using the latest

digital technology to generate a highly stable and accurate

output with very low distortion. Each phase output is

individually adjustable for voltage and phase angle. In

addition, full control of frequency is available. Step changes

of any quantity may be generated with automatic timing of the

response of the relay under test.

The unit is controlled by a simple user interface with context

sensitive menus. Values may be either typed in at the

keypad or smoothly varied using a digital potentiometer.

Features

3-

φ

Voltage output from 1-

φ

supply

0-133V

φ

-N output voltage

0-266V/292V

φ

-N with optional VT box

45VA/phase maximum output

Variable Frequency 40-999.9Hz

Phase shift ±180.0°

Multi-function timing system

Ideally suited to testing G59 schemes

Step change of phase and df/dt

Large back-lit liquid crystal display

Compact and lightweight

Automatic mains voltage selection

The DVS3 mk2 is ideally suited to testing G59 protection,

including loss of mains protection. Vector surge and df/dt

(ROCOF) relays may be simply tested and timed, as can

other protection requiring one to three voltages, including:

Under and over frequency relays

Under and over voltage relays

Synchronising relays

df/dt & ROCOF relays

Vector surge relays

Transducers

In conjuction with a current source (such as the 200ADM),

the DVS3 mk2 can be used to test protection requiring

current injection with a phase-shiftable voltage including:

Directional relays

Distance protection

The display on the DVS3 is back-lit and exceptionally

clear. Menu options on the left are selected by dedicated

buttons on the panel next to the display, allowing

immediate access to adjust voltage, phase and frequency.

Phase to phase and phase to neutral voltages are both

shown on the display, along with frequency and phase

Optional 260V

VT box

Power transducers