/PERATING INSTRUCTIONS
3$
6
# ' #
) .
# 4
0 2 ) -
!
0RIMARY RATED CURRENT OF THE CURRENT TRANSFORMERS
3MALLEST SETTING VALUE
!
,ARGEST SETTING VALUE
!
0ILOT WIRE RESISTANCE ADJUSTMENT BY ADDITIONAL RESIS
TORS IS NOT NECESSARY IN 3$ SINCE THE PROTECTION
CARRIES OUT THE ADJUSTMENT BY INTERNAL CALCULATION
&OR THIS THE PROTECTION MUST BE INFORMED ABOUT THE
PILOT WIRE LOOP RESISTANCE BY SETTING OF ADDRESS
2X )N ADDITION TO THE REAL PILOT WIRE LOOP RESISTANCE
¬
MUST BE CALCULATED WHEN THE RELAY IS EQUIPPED
WITH PILOT WIRE MONITORING &OR EACH BARRIER TRANS
FORMER 82 FURTHER
¬
MUST BE ADDED 4HE PILOT
WIRE LOOP RESISTANCE CAN BE MEASURED BY THE RELAY
ITSELF DURING COMMISSIONING REFER TO 3ECTION
&OR THREETERMINAL LINES TEED LINES THE LOOP RESIS
TANCES OF BOTH PILOT WIRE PAIRS ARE REQUIRED )T MUST
BE NOTED THAT 2X ADDRESS IS ALWAYS THE LOOP
RESISTANCE OF THAT PILOT WIRE PAIR WHICH IS DIRECTLY CON
NECTED TO THE RELAY UNDER CONSIDERATION 2Y AD
DRESS IS THE LOOP RESISTANCE OF THE PILOT WIRE
PAIR CONNECTED TO THE ADJACENT RELAY IN THE SAME
SUBSTATION
4HE CAPACITANCES OF THE PILOT WIRES CAN ALSO BE COM
PENSATED WITHIN THE RELAY BY CALCULATION NO EXTERNAL
MEASURES ARE NECESSARY #OMPENSATION IS RECOM
MENDED FOR PILOT WIRE CAPACITANCES OF APPROXIMATELY
¿
& AND ABOVE THIS CORRESPONDS TO A LENGTH OF CA
KILOMETERS APPROX MILES FOR USUAL PROTECTION
PILOT WIRES )N ADDITION TO THE PILOT WIRE CAPACITANCE
N& MUST BE CALCULATED WHEN THE RELAY IS
EQUIPPED WITH PILOT WIRE MONITORING 4HE PILOT WIRE
CAPACITANCE CAN BE SET UNDER ADDRESS #X IT
ALSO CAN BE MEASURED BY THE RELAY ITSELF DURING COM
MISSIONING REFER TO 3ECTION
&OR THREETERMINAL LINES THE CAPACITANCES OF BOTH PI
LOT WIRE PAIRS ARE REQUIRED 4HE SAME DEFINITIONS AP
PLY AS FOR THE RESISTANCES #X ADDRESS IS THE
CAPACITANCE OF THAT PILOT WIRE PAIR WHICH IS DIRECTLY
CONNECTED TO THE RELAY UNDER CONSIDERATION #Y AD
DRESS FOR THE ADJACENT RELAY
4HE MINIMUM TRIP COMMAND DURATION CAN BE SET UN
DER ADDRESS )T IS VALID FOR ALL PROTECTION FUNC
TIONS OF THE RELAY WHICH CAN LEAD TO TRIP
2 X
¬
,OOP RESISTANCE OF THE PILOT WIRE PAIR FOR THREETERMI
NAL LINES 2X IS THE LOOP RESISTANCE OF THE PILOT WIRE
PAIR DIRECTLY CONNECTED TO THE RELAY
3MALLEST SETTING VALUE
¬
,ARGEST SETTING VALUE
¬
2 Y
¬
/NLY FOR THREETERMINAL LINES
,OOP RESISTANCE OF THE PILOT WIRE PAIR CONNECTED TO
THE ADJACENT RELAY
3MALLEST SETTING VALUE
¬
,ARGEST SETTING VALUE
¬
# X
N &
4OTAL CAPACITANCE OF THE PILOT WIRE PAIR FOR THREETER
MINAL LINES #X IS THE CAPACITANCE OF THE PILOT WIRE
PAIR DIRECTLY CONNECTED TO THE RELAY
3MALLEST SETTING VALUE
N&
,ARGEST SETTING VALUE
N&
# Y
N &
/NLY FOR THREETERMINAL LINES
4OTAL CAPACITANCE OF THE PILOT WIRE PAIR CONNECTED TO
THE ADJACENT RELAY
3MALLEST SETTING VALUE
N&
,ARGEST SETTING VALUE
N&
4
4 2 ) 0
S
-INIMUM TRIP COMMAND DURATION
3MALLEST SETTING VALUE
S
,ARGEST SETTING VALUE
S
Содержание 7SD502
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