Atec T-R-DVS3 - Manual

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