GE 845 Instruction Manual page 59

CHAPTER 2: INSTALLATION
Phase A
Phase B
Phase C
WYE VT
C
A
B
Typical auxiliary
contacts connection
52a
F13 DIGITAL INPUT 1
W1 BREAKER
52b
F14 DIGITAL INPUT 2
52a
F15 DIGITAL INPUT 3
W2 BREAKER
52b
F16
DIGITAL INPUT 4
52a
F17 DIGITAL INPUT 5
W3 BREAKER
52b
F18 DIGITAL INPUT 6
F19 DIGITAL INPUT 7
F20 COMMON
F21 +24 V
G/H13 DIGITAL INPUT 1
G/H14 DIGITAL INPUT 2
G/H15 DIGITAL INPUT 3
G/H16
DIGITAL INPUT 4
G/H17 DIGITAL INPUT 5
G/H18 DIGITAL INPUT 6
G/H19 DIGITAL INPUT 7
BCD DECODER
G/H20 COMMON
G/H21 +24 V
H1 DIGITAL INPUT 1
H2
DIGITAL INPUT 2
H3 DIGITAL INPUT 3
H4
DIGITAL INPUT 4
H5 DIGITAL INPUT 5
H6 DIGITAL INPUT 6
H7 DIGITAL INPUT 7
H8 DIGITAL INPUT 8
H9
DIGITAL INPUT 9
H10 DIGITAL INPUT 10
H11 COMMON
H12
+24 V
CH1 FIBER INPUT 1
CH2 FIBER INPUT 2
CH3 FIBER INPUT 3
CH4
FIBER INPUT 4
C1 HOT
C2 COMP
C3 RETURN
C4 HOT
C5 COMP
C6 HOT
C7 COMP
C8 RETURN
C9 SHIELD
C10 HOT
C11 COMP
C12 HOT
C13 COMP
C14 RETURN
C15 HOT
C16 COMP
C17 SHIELD
C18 RESERVED
CABLE SHIELD TO BE GROUNDED
AT PLC/COMPUTER END ONLY
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 2-17: Typical Wiring Diagram for a 3-Winding Transformer
TRANSFORMER
PHASE CTs
SLOT J
RTD 7
RTD 7/8
RTD 8
RTD 9
RTD 9/10
RTD 10
SLOT B OR C: I/O_R OR I/O_S* (OPTIONAL)
RTD 11
* SUPPORTS 10 OHM COPPER RTD AS WELL
RTD 12
SLOT E
SLOT D
ANY MEASURED
OR METERED
ANALOG PARAMETER
OUTPUTS
PHASE CTs
PHASE CTs
SLOT K
SLOT G OR H: I/O_A* (OPTIONAL)
* SLOT H I/O_A IS AVAILABLE WHEN SLOT G IS WITH I/O_L
845 Transformer Protection System
SLOT G: I/O_L (OPTIONAL)
DCmA I/O
ANALOG OUTPUT
ANALOG INPUT
1 1 2 3 4 5 6 7 1 1 2 3 4
G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12 G13 G14 G15 G16 G17 G18 G19 G20 G21 G22 G23 G24
ANY MEASURED OR
METERED ANALOG PARAMETER
INPUTS
ELECTRICAL INSTALLATION
TRIP
COIL
52a
COIL
52b
G/H1
TRIP
G/H2
COIL
52a
G/H3
G/H4
TRIP
G/H5
COIL
52a
G/H6
G/H7
G/H8
G/H9
G/H10
G/H11
G/H12
G/H22
G/H23
G/H24
HOT B1
RTD 1
COMP B2
RTD 1/2 RETURN B3
HOT B4
RTD 2
COMP B5
HOT B6
RTD 3
COMP B7
RTD 3/4 RETURN B8
SHIELD B9
HOT
B10
RTD 4
COMP B11
HOT B12
RTD 5
COMP B13
RTD 5/6 RETURN B14
HOT B15
RTD 6
COMP B16
SHIELD B17
RESERVED B18
OHMS
RTD
INPUT
LTC TAP AMBIENT
POSITION
TEMPERATURE
IF OHMS
INPUT
+
TRIP W1 BKR
- CIRCUIT
+
CLOSE W1 BKR
-
CIRCUIT
+
TRIP W2 BKR
-
CIRCUIT
+
TRIP W3 BKR
-
CIRCUIT
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