Inverter Technical specifications:
defines the electrical and mechanical characteristics
and requirements for an uninterruptible stored
emergency power supply system. The system as specified
herein includes all the components required to
deliver reliable, high quality uninterruptible
power for emergency illumination and related life
safety equipment. The system consists of a microprocessor
controlled IGBT based PWM inverter, high speed
transfer devices, battery charging system, energy
storage battery platform, a diagnostic monitoring
display panel, and all the related hardware components
and software to facilitate a functional centralized
system. The emergency power supply system provides
immunity from power interruptions. The system
includes an uninterrupted, normally on output
power section and a normally off standby output
power section, thus enabling compatibility with
emergency lighting fixtures operating in normally
on and standby operating modes with a negligible
changeover time. A self-diagnostic monitoring
alarm system continuously advises of system status
and battery condition.
The system is designed and manufactured
to assure maximum reliability, serviceability
and performance. The system's microprocessor,
IGBT based PWM inverter, battery charger, high
speed transfer devices, filtering components,
diagnostic monitor display electronics and all
other active and passive components shall be installed
into one vertical profile, side accessible cabinet.
The diagnostic monitor display panel and operational
push buttons shall be mounted on the front of
the system for easy operation and viewing. The
system is furnished with internally located AC
input circuit breaker; DC circuit breaker and
AC output circuit breaker. All conductors and
transformer windings shall be copper constructed.
Cabinets shall be constructed of steel, lockable
doors for access to all components.
Emergency Operation: Upon the failure or unacceptable
deviation of commercial AC power, battery power
is converted by the PWM inverter and filtered
through the constant voltage-regulating transformer.
There shall be no break or interruption of power
to the load upon failure or restoration of the
commercial AC power. Any transfer time resulting
in a break or loss of power is unacceptable with
reference to the uninterrupted output.
In the case of a commercial power outage that
exceeds the battery run time requirement, the
output of the inverter shall shut off, but automatically
restart once commercial AC power returns. Recharging
of the batteries shall commence immediately.
· Input Voltage:
170 VAC - 270 VAC for single phase input &
350 VAC - 450 VAC for three phase input.
· Frequency Range: 45 - 55 Hz.
· Output Voltage:
170 to 270 VAC while on Mains & 230V+/-1%
while on batteries for single phase
350 - 450 VAC while on Mains & 415+/-1% while
on batteries for Three phase
· Wave form: Sine Wave
· Crest Factor: 3: 1.
· Line Voltage Regulation: +/-3%.
· Load Regulation: Typically better than
· Isolation: Achieved during unit working
· Battery backup time: As per requirement
· Battery Type: SMF, Thick Plate, Tubular
· Charger: Full wave, filtered CVCC type
for better battery life.
· Recharge Time: 0 - 90% of the charge
in 4 -5 hours & 90 - 100 % in 4 - 5 hours.
· Bus Voltage:
1 Ø i/p - 1Ø o/p - 5 KVA - 7.5 KVA
= 120 VDC
3 Ø i/p - 1Ø o/p - 10 KVA - 15 KVA
= 180 VDC or 240 VDC
3 Ø i/p - 3Ø o/p - 30 KVA - 100
KVA = 360 VDC or 384 VDC
· Overload Capability: 120% for ten
· Frequency Stability: +0.1 Hz on batteries.
· Efficiency: Not less than 90% under full
Operating Temperature: 0 to 40 degrees Celsius
· Storage Temperature: -20 to 50 degrees
· Relative Humidity: 95% non-condensing.
· Elevation: 5,000 feet, 1,500 meters.
· Audible Noise Level: Not greater than