Manual 37138C
ESDR 4T - Current Differential Protection Relay
C
HAPTER
7. C
OMMISSIONING
................................................................................................... 33
Prerequisite........................................................................................................................................... 33
Pre-Adjustments ................................................................................................................................... 33
Testing with Secondary Values ............................................................................................................ 33
Differential Current Testing Using Single-Sided Three-Phase Supply ...................................... 34
Commissioning Using Primary Values ................................................................................................. 34
Testing for Correct Connection .................................................................................................. 35
Testing with Cyclical Swapping.................................................................................................. 35
Renewed Test with the Correct Connection .............................................................................. 36
A
PPENDIX
A. D
IMENSIONS
....................................................................................................... 37
A
PPENDIX
B. T
ECHNICAL
D
ATA
............................................................................................... 38
A
PPENDIX
C. L
IST OF
P
ARAMETERS
......................................................................................... 39
A
PPENDIX
A. S
ERVICE
O
PTIONS
.............................................................................................. 41
Product Service Options....................................................................................................................... 41
Returning Equipment for Repair........................................................................................................... 41
Packing a Control ....................................................................................................................... 42
Return Authorization Number RAN ............................................................................................ 42
Replacement Parts ............................................................................................................................... 42
How to Contact Woodward................................................................................................................... 43
Engineering Services............................................................................................................................ 44
Technical Assistance............................................................................................................................ 45
Figures and Tables
Figures
Figure 3-1: Wiring diagram ....................................................................................................................................................... 9
Figure 3-2: Power supply......................................................................................................................................................... 10
Figure 3-3: CT (transducer) inputs........................................................................................................................................... 11
Figure 3-4: Discrete inputs....................................................................................................................................................... 12
Figure 3-5: Relay outputs ........................................................................................................................................................ 13
Figure 4-1: Protection principle ............................................................................................................................................... 15
Figure 4-2: Characteristic ........................................................................................................................................................ 17
Figure 5-1: Front panel ............................................................................................................................................................ 20
Figure 6-1: Sealing .................................................................................................................................................................. 26
Figure 6-2: Operating/idle current ........................................................................................................................................... 27
Figure 7-1: Dimensions............................................................................................................................................................ 37
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