1600XP Series Single Phase Uninterruptible Power Systems
Product Specifications – Rev 5.0 October 2013
3.6kVA – 22kVA
Page 3 of 9
interrupt the critical load. Transfer to Bypass may also be performed as a manual operation via
the UPS touch screen front panel.
E. POWER CONDITIONING MODE - Should the batteries be removed from the UPS, the UPS
continues to function and still provide protection against spikes, common/normal mode noise,
load steps and frequency shifts (without battery back-up capability).
4.3
Main Components Functions
4.3.1 Converter / Charger / DC Chopper
DESCRIPTION - The converter/charger consists of a solid-state three phase rectifier, DC
to DC converter (chopper), output filter, and transient suppresser network to regulate and
maintain DC power to the inverter.
1) TRANSIENT SUPPRESSER - The incoming AC utility connects first to a molded
case circuit breaker as a means of disconnecting power to the UPS. Power flows through
a surge absorber to prevent large transients from passing through to the load or damaging
the batteries. Power flows through a line filter to prevent sags or surges from passing to
the load.
2) CONVERTER/CHARGER - The converter serves to change incoming AC power to
DC, which is supplied to the DC chopper. From this point, DC power is used to recharge
the battery bank while simultaneously providing power to the inverter.
a)
Input Frequency Range: 45-65 Hz, continuous, without battery operation
b)
Capacity: Battery recharges to within 90% of nominal from a fully discharged
state in 10 times the discharge time.
3) DC CHOPPER - The chopper circuit consists of inductors, capacitors, diodes and
IGBT's (Insulated Gate Bipolar Transistors). The chopper provides start-up protection
(by checking phase rotation of incoming utility power), boosting the DC to the inverter
during low AC input voltage conditions, providing power factor enhancement, and
reducing reflected harmonics to incoming utility power.
4.3.2 Pulse Width Modulated (PWM) Inverter
DESCRIPTION - The PWM (Pulse Width Modulated) inverter incorporates an advanced
IGBT design and output over current protection for clean, regulated output power to the
critical load.
1) INVERTER - The inverter network consists of a high speed IGBT switching network
designed to supply non-linear loads with a clean and steady voltage waveform. The
inverter switching speed is fast enough to limit audible noise to 50 dBA at 3 feet
(measured on ‘A’ scale).
2) OVERCURRENT PROTECTION - The output circuitry is equipped with a Hall
Effect Current Transformer to detect and protect the inverter from excessively high
currents.
