Features and Advantages
2.6
a.
Reliable input protection:
Circuit breakers are in each input loop to ensure
power can continue through the other loops in the event of a breaker trip
caused by abnormal conditions in either the rectifier or the load.
b.
Input surge protection:
Input surge protection is added at the input to
provide enhanced protection to both the ELI and the load and also protects
against lightning effects and/or surges caused by large cycling loads or those
that are being turned on and/or off.
c.
EMI suppression:
An EMI filter is added to meet the international EMC limits
to ensure that No noise will effect or interfere with other equipment
connected to the same AC source.
d.
Ruggedness:
The rectifier employs phase control technology to regulate the
DC bus voltage allowing the batteries to be charged while supplying DC
power to the inverter. This has been proven to be the most efficient method
to control and regulate the charge on the batteries. The SCR technology and
PFC circuit also assist in maintaining the input waveform.
e.
High frequency design:
The inverter design incorporates high frequency,
highly efficiency Insulated Gate Bi-polar Transistors (IGBT). A PWM wave,
synchronized to the bypass input, triggers the IGBT’s, which invert the DC
into AC power required by the loads. This design decreases the number of
required components, increases reliability and performance while decreasing
acoustic noise, size and weight.
f.
True galvanic isolation:
The isolation transformer addresses ground
differentials between the input and output, and prevents ground leakage
current problems, common mode and normal mode noise. This transformer is
located on the output side of the ELI system providing isolation under every
mode of operation.
g.
PNP modular design:
The circuit boards are designed into several modules,
which are plugged into slots in the ELI. These plug-able modules allow for
easy replacement in the field when necessary and eliminate field diagnostics.
h.
Cold start function:
The ELI can be started without the utility AC supply
being activated. Or present at the input terminal strip because our designed
system is designed with current limiting circuitry, which allows Startup of the
ELI on battery DC power.
i.
Multi-CPU design:
Several CPU’s are designed into the control circuit.
These critical functions are designed with multi-level redundancy increasing
reliability and up-times by eliminating field problems.
6
M4102 Ty-Borealis 8-48KW Operators Manual v1.0 2013-08-14
