BE1-BPR Breaker Protection Relays are three-phase and neutral,
microprocessor based relays designed to provide power systems
with protection and security against monitored breaker failure or
to initiate multiple shot breaker reclosings.
These relays incorporate a powerful means of programming internal
relay logic to satisfy a wide range of user requirements without making
any relay hardware changes. Microprocessor-based design provides
the basic features of a programmable logic controller (PLC) combined
with an instantaneous overcurrent module.

Cased in a 19 inch rack-mount or a vertical panel mount, the relay offers
installation versatility. A wide temperature, 2 lines by 16 character display
provides diagnostic and setup information. Two RS-232 serial ports (one
each front and rear) and one RS-485 serial port (rear) provide remote
communication and relay control.
Built-in diagnostics and monitoring features provide information for both
the health of the relay and the health of the breaker being monitored.
Relay diagnostics include continuous background monitoring of the
power supplies, analog-to-digital (A/D) converter, random-access memory
(RAM), read-only memory (ROM), and electrically-erasable programmable
ROM (EEPROM). A dedicated alarm (ALM) relay output provides power
supply, microprocessor, and software alarm status. Breaker diagnostics
include a timing diagnostic log, breaker contact duty monitoring, breaker
resistor protection, and breaker arc detection.
Other monitoring features include oscillographic fault records and fault
summary logs. BE1-BPR relays use the Inter-Range Instrumentation Group
(IRIG), Format B for high timing accuracy and resolution.
Mounting Hardware
The AVC Sensing Module can be mounted directly on a genset using #10-32 or
equivalent hardware. A lock washer should be used between the screw head and
body of the module. Torque applied when tightening the mounting hardware
should not exceed 25 inch-pounds (2.8 N•m).
The AVC Sensing Module provides a convenient and cost-effective method
for expanding the applications where AVC63-12 and AVC125-10 voltage
regulators can be applied. The AVC Sensing Module increases the nominal
sensing voltage of style BX AVC63-12 and AVC125-10 voltage regulators
from 200/240 Vac to 480 Vac or 600 Vac. The AVC Sensing Module is
compatible with nominal sensing frequencies of 50/60 Hz and 400 Hz.
A compact, rugged (potted) case enables the AVC Sensing Module to be
mounted directly on the generator.
Other than making connections during installation, the AVC Sensing Module
requires no adjustment or calibration.
MOUNTING –40 to 70°C (–40 to 158°F) operation and storage
95%, non-condensing
160 g (6 oz.)
The AVC Sensing Module is housed in a potted, plastic case that can be
mounted in any convenient position.
Overall module dimensions and panel drilling dimensions are illustrated in Figure 1.
CONNECTIONS
All AVC Sensing Module connections are located on the back panel. Sensing voltage
is applied to the lower, six position terminal block. Sensing voltage is supplied to the
voltage regulator from the upper, three-position terminal block. Connections consist
of #6 terminal screws. Each terminal accepts a maximum wire size of 12 AWG (13
mm2). When securing connections, apply no more than 9 in-lb (1 N•m) of torque to
each terminal screw.
Before connecting the module, review the terminal descriptions listed in Table 1 and
the connection diagram of Figure 2. At any given time, only one of the two sets of
sensing voltage input terminals can be used. Under no circumstance can both the
480 Vac and 600 Vac sensing input terminals be connected to a voltage source.
Enjoy proven, dependable, high performance with Basler Electric’s AVC line.

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