Majorsine Power Inverters feature the integrated utility bypass and pure ac sine-wave output from a dc source input. Designed for high Mean Time Between Failure, these inverters provide the dependable ac power that critical networks demand.
The compact 2U mounting package makes this model the right selection for limited space racks and remote network access is established by simply installing the plug-n-play communication card. Standard hardware connections, NEMA receptacles and input reverse polarity-proof protection simplify the installation process.
Majorsine Inverters are designed and built for full reliability at premium network locations. These intelligent telecom-grade inverters provide pure ac sine-wave power for all critical network needs. 100% Duty Cycle combined with the most common dc system voltages in telecom inverters (48V), wireless/LMR (24V) or utility inverters (125-130V) make this unit a superior choice for the best network deployments.
Specification Overview by Model
|Part Number/Cut Sheet||Input Voltage (VDC)||Output Voltage (VAC)||Capacity|
|MAJORSINE1000-24-2U||20-30||100, 110, 115, 120||1 kVA / 800 W|
|MAJORSINE1000-48-2U||40-60||100, 110, 115, 120||1 kVA / 800 W|
|MAJORSINE2000-48-2U||40-60||100, 110, 115, 120||2 kVA / 1600 W|
|MAJORSINE1000-125-2U||100-150||100, 110, 115, 120||1 kVA / 800 W|
|MAJORSINE2000-125-2U||100-150||100, 110, 115, 120||2 kVA / 1600 W|
|MAJORSINE1000i-48-2U*||40-60||208, 220, 230, 240||1 kVA / 800 W|
|MAJORSINE2000i-48-2U||40-60||208, 220, 230, 240||2 kVA / 1600 W|
* limited availability through 2021 – EOL
MAJORSINE 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.
1a) In the first option, Off-Line mode, AC output power will be supplied through the AC bypass circuit 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.
2a) 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 circuit. 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 less than 4 ms.
The Off-line/On-line mode is changed from one to the other by pressing the ON button for 2.5-3 seconds and release, when both input sources are available and output conditions are normal. The operational mode cannot be changed during an abnormal or fault condition.
Remote monitoring is a prime consideration and requirement to manage multiple network elements from a central location. Each utility inverter or telecom inverter is manufactured with an expansion slot to support the Majorsine-SNMP card installation in the field, at the time of service commissioning.
The Majorsine telecom inverter family allows bypass alarm configuration. End users can disable the bypass alarm when deployed into applications without a “mains” ac power circuit. Link: Programmable Option