Siemens 7SA511 manual Station

7SA511 Line Protection Relay Chapter 4

1	1
+V	-V
	Protection	Pickup	t2		Trip
	Line
												2
B												+V
Station		2		7	9			8		3	4	11
								A
										C
	7SW90	B				10						12
		1								5	6
					Transmission	Annunciation		PilotWire	Connection			Reception	Annunciation
	-XX		c		3	1	6 4		d	13	11 16 14
		K1						K2

1 V-

				48-60VDC	110-125VDC	220-250VDC	24,30VDC	55,62.5VDC	90,110-125VDC
	PilotWireFailure Annunciation		-X X	24,	48,	60,	B 12,	C 48,	D 60,
				2	3	4
TD
10s		OrderCode:	10
	PowerLine		7 P A 5 2	Relay K1	Relay K1	Relay K1	Relay K2	Relay K2	Relay K2

	7PA5210		R1				R2
	2		R4					R5
	+V					8 18 b
A		a	7	2	5		19	17 12		16
Station
	7SA51	Transmit				Trip		Receive	BI
1	1
+V	-V

1 V-

	B
	C
	Rx	Rx
wireloop:	K2	575Ω
forpilot		470Ω
resistances		470Ω
Dropping	+V	V-
	1	1

C
C
Rx	Rx
K2	1k
	1k

1k

1	1
+V	-V

K2 Rx C D

1 +V

4.7k 4.7k 6.4k Rx

1 V-

Figure 4-16.Pilot Wire Connections for Overreaching Zone Comparison with 7SW90.

July 27, 1995 4-23