Vanguard RFD-200 S2 - Manual (Page 5)

REV 2 RFD-200 S2 USER’S MANUAL
2
1.0 INTRODUCTION
1.1 General Description and Features
The RFD-200 S2 is a portable relay test set that delivers performance verification testing of
electromechanical, electronic, and microprocessor-based protective relays in their operating
installations. The RFD-200 S2 is a rugged test set suitable for testing a variety of protection
relays operated in both indoor and outdoor environments. The unit’s ergonomic design and
intuitive control panel layout make it ideal for first-time users who have little or no training.
AC Current Source
An AC current source with three outputs (10A, 40A, and 100A) provides test current to relays.
The current source output can be programmed to synchronize with the RFD-200 S2’s timer.
After a test is completed, the test current is turned off and the current reading is latched and
displayed on the LCD screen. This feature reduces the possibility of overheating the relay coils.
Built-in Power Resistors
The RFD-200 S2 features five built-in power resistors for fine current adjustment.
AC Voltage Source
An AC voltage source is available for testing relays up to 250 Vac. The AC voltage source output
can be programmed to synchronize with the RFD-200 S2’s timer.
DC Voltage Source
A 0 – 300 Vdc voltage source is also available for testing purposes.
Built-in Digital Timer
The RFD-200 S2’s digital timer features independent start and stop trigger inputs designed to
measure the time between event transitions and to display the elapsed time in both
milliseconds and cycles. The RFD-200 S2’s timer has three different trigger input modes –
Internal Trigger, Dry-Contact, or Wet-Contact. In Internal Trigger Mode, the timer can start or
stop by sensing the application or removal of the unit’s voltage or current source. In Dry-
Contact Mode, the timer can be triggered by detecting a change in state of the dry-contact
input. Similarly, in Wet-Contact Mode, it can be triggered by detecting a change in state of the
voltage input.
Auxiliary AC/DC Power Supplies
The RFD-200 S2 provides three power supplies (24 Vdc, 124 Vdc and 240 Vac) for powering
solid-state or microprocessor-based relays.