T&R Test Equipment DVS3 Mk2 Digital Voltage Source Relay Test System
The T&R DVS3 Mk2 is a three-phase digital voltage source for testing voltage and loss of mains protection relays. It is the newer, smaller, lighter higher power version of the original DVS3 with more than twice the output power and it keeps the easy to understand user interface that made the original popular. It suits commissioning, maintenance, and laboratory work and it makes testing complex voltage and loss of mains protection systems simple. T&R Test Equipment brand is also seen as TRTEST.
Key Features
- Modern digital design: generates highly stable, accurate, low distortion outputs
- Individually adjustable outputs: each phase output can be set separately for voltage and phase angle with full control of frequency
- Step changes with automatic timing: generate step changes of any quantity and automatically time the response of the relay under test
- Simple user interface: context sensitive menus with values typed in at the keypad or smoothly varied using a digital potentiometer
- Clear back-lit display: dedicated buttons beside the screen give immediate access to adjust voltage phase and frequency
- Comprehensive on-screen information: phase to phase and phase to neutral voltages, frequency and phase information plus a graphical vector diagram and the state of the two contact inputs
- Multi-function timing system: measures relay operating times accurately
- Works with current sources: can be combined with a current injection unit such as the T&R 200A-3PH series to test protection that needs three voltages and three currents
- Compact and portable: designed for field use as well as the lab
Typical Applications
- Testing under and over voltage relays
- Under and over frequency relays
- Loss of mains protection, including rate of change of frequency (df/dt) relays and vector shift protection
- Directional and distance protection testing, when paired with a current source
- Commissioning and maintenance of protection systems in substations, generation, and industry
Why Choose It
The DVS3 Mk2 makes it straightforward to test complex voltage based protection without an elaborate setup. Individual control of each phase, automatic step changes, and built in timing help engineers verify relays quickly and with repeatable results.
