Siemens SG8158-00 manual Wiring, Top

Installation

2

Mount the relay using the following steps.

1.Install the relay M1-type case in the panel opening on the switchgear equipment.

2.Connect the case ground to the terminal lug on the back of the M1-type case as shown in Figure 2.3.

3.Wire as described in Section 2.4.

Use toothed washers to ensure solid metal contact through paint of cover and panel

Case ground, #12 or braided cable to good cubicle ground, as short as possible

Figure 2.3 Case Grounding

2.4 Wiring

Wire the ISGS relay after the case is installed. Connect the wiring to the applicable terminals to support the desired fea- tures. Refer to Figure 2.4 for terminal locations. Figure 2.5 shows the internal connections of the ISGS relay. To avoid injury to personnel or the equipment, perform power connec- tions after all other wiring has been completed.

Assure that all power is off before performing any wiring. Ter- minals 1 through 20 accept ring-tongue or forked spade ter- minals and are suitable for 14 AWG to 10 AWG wire. Terminals 21 through 60 are for directly inserting the appro- priate wire and are suitable for 22 AWG to 14 AWG wire.

Communications connections made to terminals 48 to 50 require shielded twisted pair wire.

IMPORTANT:

Any unused terminals must remain discon- nected. They are for factory use only.

	RelayDisabled2	RelayDisabled1	ImpedanceSense	ImpedanceSource	GroundMonitor	BITrip		BIBSwitch	PowerInput+	PowerInput-	Trip2
Top	19		17		15			13		11
20			18	16		14			12
BI1A	21					41		VT1+
BI1B	22					42		VT1-
BI2A	23					43		VT2+
BI2B	24					44		VT2-
BI3A	25					45		VT3+
BI3B	26					46		VT3-
BI4A	27					47		NC (unused)
BI4B	28					48		SEAbus Signal +
Trip 3A	29					49		SEAbus Signal -
Trip 3B	30					50		SEAbus Ref
					Case Ground
BO1A	31
BO1B	32
BO2A	33
BO2B	34
AI1+	35
AI1-	36
AI2+	37
AI2-	38
AO1+	39
AO1-	40
		9	7		5			3		1
10			8		6		4		2		TripCommon
	CTN-2	CTN-1*	CT3-2	CT3-1*	CT2-2	CT2-1*		CT1-2	CT1-1*	Trip1

CT connections should be made with the polarity end of the	Figure 2.4 Terminal Locations
CT connected to current terminal marked with an asterisk (*).

6 Siemens Energy & Automation, Inc.