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3 HARDWARE DESCRIPTION
3.1 CASE ASSEMBLY
3.1.2 ELECTRICAL CONNECTIONS AND WIRING
Electrical connections are made to the case through four terminal blocks (A, B, C, D) mounted on the rear
cover plate. Terminal blocks A, B and C contain 32 terminal points, which consist of a #6 screw threaded into a
flat contact plate. Terminal D contains 14 terminal points, which consist of a #6 screw threaded into a flat con-
tact plate.
The top and bottom printed circuit boards connect directly to terminal blocks A, B and C via edge connectors
along the rear of the boards. The magnetics module is wired directly to terminal block D.
The middle printed circuit board is connected to the top and bottom circuit boards via the Bus Card connected
on the front side of the circuit boards. The magnetics module is connected via a card edge connector to the
bottom circuit board (input board). The current block contacts are rated to handle current transformer (CT) sec-
ondary currents.
3
DIGITAL OUTPUTS / POWER SUPPLY
BOARD
MAGNETICS SERIAL
EPROM CONNECTOR
960 CPU BOARD
FRONT PANEL
CONNECTORS
BUS CARD
DIGITAL INPUTS /
SCADA BOARD
DSP / ANI BOARD
OPTION SWITCH
MAGNETICS
MODULE
Figure 3–3: CIRCUIT BOARD LOCATIONS
GE Power Management
LPS-D Line Protection System
3-
3
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