SECTION 5 • TESTING AND SETTING
TABLE OF CONTENTS
SECTION 5 • TESTING AND SETTING ................................................................................................... 5-1
INTRODUCTION ................................................................................................................................... 5-1
Relay Operating Precautions ............................................................................................................. 5-1
OPERATIONAL TEST PROCEDURE ................................................................................................... 5-1
Equipment Required ........................................................................................................................... 5-2
Single-Phase/A-Phase Trip and Dropout Test ................................................................................... 5-2
B-Phase and C-Phase Trip and Dropout Test ................................................................................... 5-3
Target Indicator Test .......................................................................................................................... 5-7
Auxiliary Output Test .......................................................................................................................... 5-7
Power Supply Status Output Test ...................................................................................................... 5-7
Push-to-Energize Output Test ............................................................................................................ 5-7
SETTING THE RELAY .......................................................................................................................... 5-7
Terms for Calculations ....................................................................................................................... 5-7
CT Quality .......................................................................................................................................... 5-8
Burden Limit ....................................................................................................................................... 5-8
Relative CT Performance ................................................................................................................... 5-8
Setting Example 1 .............................................................................................................................. 5-8
Setting Example 2 .............................................................................................................................. 5-9
Figures Figure 5-1. Location of Stabilizing Reactor Bypass Terminals (Single-Phase Relays) ............................. 5-2
Figure 5-2. Operational Test Setup ........................................................................................................... 5-3
Figure 5-3. Operating Characteristics, Relay Style x1x-xxx-xxxxx ............................................................ 5-4
Figure 5-4. Operating Characteristics, Relay Style x2x-xxx-xxxxx ............................................................ 5-5
Figure 5-5. Extended Restraint Operating Characteristic.......................................................................... 5-6
Figure 5-6. Pickup Response Timing ........................................................................................................ 5-6
Figure 5-7. Motor Differential Application .................................................................................................. 5-9
Figure 5-8. Generator Differential Application ......................................................................................... 5-10
Tables Table 5-1. Recommended Pickup Settings ............................................................................................... 5-8
9170800990 Rev N
BE1-87G Testing and Setting
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