GE SPA11A Instructions Manual page 11

Figure 14 is a labeled photograph of an SPA 11 B relay. With the exception of the
printed circuit boards, the other SPA relays have the same construction, with parts as
indicated in Table VII. Surge capacitors are not included in Table VII (refer to the internal
connections diagrams, Fig. 1 through 4).
RELAY TRANSFER TRIP PARTSt OC UNIT UC UNIT GND UNIT GND REACTOR
SPA 11A
SPA11B
SPA12A
SPA 12B
t Transfer Trip Parts:
There are six different printed-circuit boards used in the four SPA relays as indicated
in Table VIII. The sending-end relays, SPA 11 A and 11 B, each contain two printed-circuit
boards and the receiving-end relays, SPA 12A and 12B, each contain one printed-circuit
board. For later model SPA relays {identified by a "Rev.A" following the model number)
there is a new PCB-1, power supply and detection board. The following tables indicate
board positions for the original and "Rev.A" models. The internal-connection diagrams for
the printed-circuit boards are shown in Figures 5 through 10.
ASSEMBLY
RELAY : PC Board NUMBER
SPA11A: PCB-1
0184B8614
SPA 11A: PCB-2
0184B8617
SPA11B: PCB-1 0184B8612
SPA11B: PCB-2 0184B8616
SPA 12A: PCB-1
0184B8615
SPA12B: PCB-1 018488613
GEK-65512
CONSTRUCTION VARIATIONS
X
X
IT Unit
Target Seal-in Unit
ITA Unit
DC Voltage Volt Link
R8 - 1 50 Ohm Resistor
R93 - 1000 Ohm Resistor
R94 - 1000 Ohm Resistor
R95 - MOV
TABLE VIll-A
PRINTED CIRCUIT BOARD INFORMATION
PCB
FRONT VIEW
Hz
50/60
G2/G1
G2/G1
G2/G1
G2/G1
G2/G1
G2/G1
TABLE VII
X
X
X X
X
X
POSITION LED INDICA TORS
Left Slot (1} Power Supply (Yellow)
Right Slot {3) UC, OC, GND {All Red)
Left Slot (1) Power Supply {Yellow)
{3) UC, OC, GND (All Red)
Right Slot
Right Slot (2) Power Supply (Yellow),
UC (Red)
Right Slot (2) Power Supply (Yellow),
uc
(Red)
11
X X
X X
TRANSFER
TRIP
CIRCUITRY
NO
NO
YES
YES
NO
YES