Electrical Connections And Wiring - GE ALPS Instruction Manual

3 HARDWARE DESCRIPTION
Electrical connections are made to the case through four terminal blocks (A, B, C, D) mounted on the rear cover plate. Ter-
minal 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 consisting of a #6 screw threaded into a flat contact 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) secondary currents.
960 CPU BOARD
BUS CARD
DIGITAL INPUTS
SCADA BOARD
The ALPS system model number label is located on the front cover. The terminal blocks located on the rear cover plate are
uniquely identified by a label that is found along the side of each terminal block Each terminal is also identified.
Four connectors, PL1, PL2 (A & B), and PL3 are used for serial communication between the ALPS and a PC or modem.
PL3 is an optional communications port. All three communications ports work independently.
GE Power Management
DIGITAL OUTPUTS / POWER SUPPLY
BOARD
/
OPTION SWITCH
Figure 3–3: CIRCUIT BOARD LOCATIONS
ALPS Advanced Line Protection System
3.1 CASE ASSEMBLY

3.1.2 ELECTRICAL CONNECTIONS AND WIRING

MAGNETICS SERIAL
EPROM CONNECTOR
FRONT PANEL
CONNECTORS
DSP / ANI BOARD
MAGNETICS
MODULE
3.1.3 IDENTIFICATION
3
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