Bentek Solar 1000V BUSS Series, Installation And Operating Instructions Manual, Page: 13 / 54

Installation and Operating Instructions – 1000V BUSS, Grounded (125A to 400A)
950-003342-000 Rev B 13
Chapter 2: Product Description
Components
NOTE
Figure 2 and show the arrangement of the components for a unit containing 12
circuit breakers. Units with fewer than 12 circuit breakers do not have the top
circuit breakers. Units with 13 or 14 circuit breakers are in the taller cabinet and
are arranged similarly.
The free-standing Breaker Universal Safety System is a floor-mounted NEMA-3R
electrical enclosure that contains the following components:

Circuit Breakers (CB)—1000VDC-rated integral unit are designed to open a
circuit automatically on a predetermined overload of current. The circuit
breakers are installed in two banks. Each circuit breaker has a lock out/tag
out to accommodate a tag or padlock with a shackle up to 1/4-inch.

Dead Fronts—Steel circuit breaker dead fronts inside the door provide access
to the circuit breakers while providing a barrier to prevent unintentional
contact with live parts.

Circuit Breaker Dead Fronts—Covers over each bank of circuit breakers
provide additional protection. The covers do not need to be removed to wire
the BUSS.

Equipment Ground Busbar—Aluminum bar used to combine individual
source circuit grounds to system ground.

Grounded Busbar—Aluminum bar used to combine circuit breakers. The
busbar provides for 16 lug locations or 32 back-to-back connections.

Ungrounded Busbar—Aluminum bar used to connect ungrounded outputs.

Insulators—Plastic standoffs used to isolate the electricity between the
busbars, weldments, and the enclosure.

Fan, Vent, and Thermostat—Provide cooling to the BUSS when the inside
reaches a set temperature (recommended temperature setting is 40
o
C)
.

Heater and Hygrostat (optional)—The hygrostat monitors humidity in the
enclosure and controls heat to the BUSS when the humidity reaches a certain
level. Recommended for environments of -20
o
C and below.

The Bentek Zone Monitoring system or the Current Sense feature
(optional)—Uses an Ethernet or RS-485 interface to provide a method for
monitoring individual source circuits from a PV array. The system is described
in more detail in Appendix A, “Bentek Zone Monitoring System using an
Ethernet Interface,” or Appendix B, “Bentek Zone Monitoring System using an
RS-485 Interface.” The system consists of:

Analog Input Module.

Current Sensors.

Power Supply.