Page 5
Advanced Protection Features:
¾
Input reverse polarity-proof protection
¾
Internal over temperature protection
¾
Output overload protection
¾
Output over/under voltage protection
¾
Output short circuit protection
¾
DC input short circuit protection: fuse and breaker
¾
AC input short circuit protection: breaker
¾
Input over/under voltage protection
¾
Fan failure detection and protection
3-2 Block Diagram
Rackmount Pure Sine Wave Inverter Block Diagram
Rackmount Pure Sine Wave inverters feature IGBT (Insulated Gate Bipolar Transistor) technology, minimizing
weight and dimension, while enhancing output short circuit reliability and overload capacity.
Output voltage is provided in one of two ways:
1) From AC input bypass mode: (Off-Line Mode)
2) From DC to AC inverter mode: (On-Line Mode)
Either mode is front panel programmable; the selected operational mode will predetermine the “default” output.
In the first option,
Off-Line mode
, AC output power will be supplied through the AC bypass mode in its “normal”
operation. Upon AC input failure, output power will be diverted through the DC to AC inverter mode. Once AC mains
are restored, the unit will revert from inverter mode to bypass mode.
In the second option,
On-Line mode
, AC output power will be provided directly by the inverter from the VDC source.
Should the DC source or inverter fail, the system will transfer its output power through the bypass mode. Once the
DC power source is restored, the system will revert to “inverter” mode.
Transfer time from inverter to bypass, or bypass to inverter is < 4 ms.
The Off-line/On-line mode is changed from one to the other by pressing the ON button for less than 3 seconds when
normal output is available. The operational mode cannot be changed during an abnormal or fault condition.
3-3 Front Panel
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Tel: 514.369.4919 Fax: 514.369.4817
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DC INPUT
DC
DC
DC
AC
AC
OUTPUT
DC to DC Converter
FILTER
OUTPUT RELAY
BREAKER
DC to AC Inverter
AC BYPASS
INPUT
FILTER
BYPASS RELAY
