Vanguard RFD-200 S3 - Manual (Page 5)

REV 1 RFD-200 S3 USER’S MANUAL
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1.0 INTRODUCTION
1.1 General Description and Features
The RFD-200 S3 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 S3 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.
Built-in Digital Timer
The RFD-200 S3’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 milli-
seconds and cycles. The RFD-200 S3’s timer has three different trigger inputs – Internal Trigger,
Dry-Contact, or Wet-Contact. The Internal Trigger can start or stop the timer by sensing the
application or removal of the unit’s voltage or current source. The Dry-Contact can trigger the
timer by detecting a change in state of the dry-contact input. Similarly, the Wet-Contact can
trigger the timer by detecting a change in state of the voltage input. Thus, the three inputs can
trigger the timer by the presence or removal of the unit’s voltage or current source or by
changes in voltage or current states.
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 S3’s timer.
After a test is completed, the test current reading is latched and displayed on the LCD screen.
This feature reduces the possibility of overheating the relay coils.
Auxiliary Output Contact
A set of NO/NC dry contacts (240 Vac/3A) change state when a test is initiated.
AC Voltage Source
An AC voltage source (0-250 Vac) is available. The AC voltage source output can be
programmed to synchronize with the RFD 200 S3’s timer.
DC Voltage Source
A 0 – 300 Vdc voltage source is also available. The DC voltage source can also be programmed
to synchronize with the RFD-200 S3’s timer
Volt Meter
One volt meter input (0 to 600 V input range) is available on the RFD-200 S3.