Cooper Lighting S260-75-1 Fault Block Shielded Cable, TABLE, Figure, IMPORTANT:, Fault block cable plug, Fault Block Cable Limitations

Type S Automatic Load-Transfer Control Installation, Operation, and Maintenance Instructions

Fault Block Shielded Cable

Table 3 shows the maximum distance between the control and the high-voltage switches for a range of conductor sizes and fault-block settings. The table is based on conductor voltage drop and saturation of the current sensing transformers in the switch. Lower actuating levels and lower multipliers could allow longer lines. However, the limitation on switch control cable lengths, Table 2, preclude their use.

Shielded cable is required between the transfer switches and the S control for operating the fault block accessory.

IMPORTANT: Only shielded cable is to be used on fault block accessory and is mandatory to validate the Cooper Power Systems warranty. Use of a non-shielded cable could result in misoperation.

The shield must be grounded to the equipment housing at both the switch and control ends. Shield connections are made at connector plug pin or socket as shown in Figure 13. This pin mates with the receptacle pin or socket which is grounded in the switch and in the control as shown in Figures 6 and 8.

TABLE 3

Fault Block Cable Limitations

		Max. Distance in Feet
Phase		Between Switch and
Actuating	Con-		S Control
Current	ductor
Level	Size	For X 8	For X 6	For X 4
(Amps)	(AWG)	Multi-	Multi-	Multi-
		plier	plier	plier
640	18	600	1000	1800
640	16	950	1600	2900
640	14	1500	2550	4600
640	12	2400	4000	7300
448	18	1100	1700	–
448	16	1800	2700	–
448	14	2800	4300	–
448	12	4500	6850	–
320	18	1800	–	–
320	16	2900	–	–
320	14	4600	–	–
320	12	7300	–	–

					SOLDER #16 AWG JUMPER WIRE
					FROM SHIELD TO PIN G TO		RUBBER GROMMET
					COMPLETE SHIELD CONNECTION
KEYWAY		KEYWAY					ACCOMMODATES
						.50 TO .56 DIA. CABLE
			SOCKET A
	PIN G
				A

SWITCH END CONTROL END A

STRIP JACKET TO EXPOSE SHIELDING

Figure 13.

Fault block cable plug.

14