Vanguard RFD-200 S2 User Manual
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REV 2 RFD-200 S2 USER’S MANUAL
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TABLE OF CONTENTS
CONVENTIONS USED IN THIS DOCUMENT ..................................................................................... 1
1.0
INTRODUCTION .................................................................................................................... 2
1.1
General Description and Features ................................................................................... 2
1.2
Furnished Accessories ...................................................................................................... 3
1.3
RFD-200 S2 Technical Specifications ................................................................................ 4
1.4
Controls and Indicators .................................................................................................... 6
2.0
FUNCTIONAL DESCRIPTION ................................................................................................. 8
2.1
RFD-200 S2 Auxiliary Power Supply ................................................................................. 8
2.2
RFD-200 S2 Current and Voltage Sources ........................................................................ 8
2.3
Control Switches .............................................................................................................. 9
2.3.1.
Voltage and Current Source Controls ....................................................................... 9
2.3.2.
LCD Contrast Control ................................................................................................ 9
2.4
Timer Start and Timer Stop Inputs ................................................................................. 10
2.5
RFD-200 S2 Power Resistors .......................................................................................... 10
2.6
RFD-200 S2 External Voltage Input ................................................................................ 11
2.7
RFD-200 S2 External Current Input ................................................................................ 11
3.0
OPERATING PROCEDURES ................................................................................................. 12
3.1
Setting the Voltage or Current Source ........................................................................... 12
3.2
Setting the RFD-200 S2 for a Time Delay Test ............................................................... 13
3.3
Using the RFD-200 S2’s Timer to Test Circuit Breaker Response Time ......................... 16
3.4
Using the RFD-200 S2’s Timer in Single Input Mode ..................................................... 18
3.5
Using the RFD-200 S2 to Plot a Current Transformer Excitation Curve ........................ 20
3.6
Using the RFD-200 S2 to Measure CT Primary and Secondary Currents ....................... 22
LIST OF TABLES
Table 1. RFD-200 S2 Technical Specifications ................................................................................. 4
Table 2. RFD-200 S2 Output Specifications .................................................................................... 5
Table 3. RFD-200 S2 Timing Accuracy ............................................................................................. 5
Table 4. Functional Descriptions of MCCB-250 Controls and Indicators ........................................ 7
LIST OF FIGURES
Figure 1. RFD-200 S2 Controls and Indicators ................................................................................ 6
Figure 2. Typical Over Current Relay Connection ......................................................................... 15
Figure 3. Typical Circuit Breaker Timing Connection .................................................................... 17
Figure 4. Typical CT Excitation Test Connection ........................................................................... 21
Figure 5. Typical CT Turns Ratio Test Connection ......................................................................... 24