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ELECTRICAL INSTALLATION
POWER SUPPLY +
POWER SUPPLY -
CHASSIS GND
1
TRIP N/O
2
TRIP COM
3
TRIP OPTV
4
CLOSE N/O
5
CLOSE COM
6
CLOSE OPTV
7
AUX 3 N/C
8
AUX 3 COM
AUX 3 N/O
9
10
AUX 4 N/C
1 1
AUX 4 COM
12
AUX 4 N/O
AUX 5 N/C
13
14
AUX 5 COM
AUX 5 N/O
15
16
AUX 6 N/C
AUX 6 COM
17
18
AUX 6 N/O
CRIT FAIL N/C
19
20
CRIT FAIL COM
CRIT FAIL N/O
21
IRIG-B +
1
IRIG-B -
2
RS485 +
3
RS485 -
4
RS485 COM
5
CHASSIS GND
6
RESERVED
7
RESERVED
8
Wire range
Phase sequence and transformer polarity
52
Figure 2-32: 350 Terminal Identification - Non-drawout
Use the following guideline when selecting wires or lugs to connect to terminal blocks
A,B,C,D,E (Drawout case design), and terminal blocks D,E (Non-drawout case design):
•
12 AWG to 22 AWG (3.3 mm
9.53 mm (0.375") maximum diameter ring terminals.
•
14 AWG to 22 AWG (2.1 mm
wire sizes and stranding. Two wires maximum per circuit.
•
14 AWG to 22 AWG (2.1 mm
(0.375") maximum diameter ring terminals. Two ring terminals maximum per circuit.
•
Suggested wiring screw tightening torque, tighten to 12 in-lb (1.35 N-m).
•
The uncovered communications cable shield connected to the common terminal
should not exceed 1" (2.5 cm) for proper EMC shielding of the communications cable.
•
Minimum suggested temperature rating for the conductors is 75C.
•
Wire type: copper
For correct operation of the relay features, the user must follow the instrument
transformer polarities, shown in the Typical Wiring Diagram. Note the solid square
markings shown with all instrument transformer connections. When the connections
adhere to this drawing, the arrow shows the direction of power flow for positive watts and
the positive direction of lagging vars. The phase sequence is user programmable for either
ABC or ACB rotation.
1
INPUT 1
2
INPUT 2
3
INPUT 3
4
INPUT 4
5
INPUT 5
6
INPUT 6
7
INPUT 7
8
INPUT 8
9
INPUT 9
10
INPUT 10
1 1
INPUT COM
12
CHASSIS GND
PHASE A CT
5
PHASE B CT
6
7
PHASE C CT
GND CT
8
PHASE A VT
9
PHASE B VT
10
PHASE C VT
1 1
12
AUX VT
2
2
to 0.3 mm
): Single wire termination with/without
2
2
to 0.3 mm
): Multiple wire termination with matching
2
2
to 0.3 mm
): Multiple wire termination with 9.53 mm
350 FEEDER PROTECTION SYSTEM – QUICKSTART GUIDE
CHAPTER 2: INSTALLATION
PHASE A CT
5
6
PHASE B CT
PHASE C CT
7
GND CT
8
PHASE A VT
9
PHASE B VT
10
PHASE C VT
1 1
AUX VT
12
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