Relay testing RFD 200

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 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 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. The DC voltage source can also be programmed to synchronize with the RFD-200 S2's timer.

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 milli-seconds and cycles. The RFD-200 S2'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.

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.

RFD-200 S2 Ampere Meters

The test current is displayed on the unit's back-lit LCD screen that is viewable in both bright sunlight and low-light levels. The current measuring range is from 0.00 to 250 A. A second ampere meter is also available and can be used to read an external current input. The external current input is rated at 6 A max and is protected by a circuit-breaker.

RFD-200 S2 Volt Meter

One volt meter input (0 to 600 V input range) is available on the RFD-200 S2.

Features

• Built-in digital timer displays contact time in both cycles and milli-seconds
• Provides variable AC current source (up to 250 Amps)
• Provides variable AC voltage source (up to 240 Vac)
• Provides variable DC voltage source (up to 300 Vdc)
• Auxiliary AC/DC power supplies for powering solid-state or microprocessor based relays
• Back-lit LCD screen (20 characters by 4 lines) viewable in bright sunlight and low-light levels
• Tests current transformer excitation
• Tests transformer turns-ratio