Product description
An industrial power system converting energy from an existing DC bus or battery into controlled AC voltage and frequency.
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Industrial inverters generate critical AC power from an existing DC bus or battery system. The DC input range, output waveform, transient loads and bypass requirement determine the design.
ENERGO PRODUCTS
Inverter Systems
PRODUCT AND TECHNOLOGY
Role in the system and operating principle
Operating principle
The semiconductor switching stage converts DC input into an AC waveform. Filtering and the control loop maintain output quality as the load changes.
Maintenance and lifecycle
Fans, capacitors, filters, power connections and bypass components are monitored. Capacity adequacy is reassessed when loads change.
APPLICATIONS
Engineering for the duty profile.
- Substation AC loads
- Rail signalling
- Communications
- Emergency control systems
- Mobile and field systems
TYPICAL OPTIONS
Technical framework confirmed in the quotation
Values and options are for initial selection. Final values are determined after the selected product, manufacturer data, specification and site conditions have been verified.
ParameterTypical optionSelection basis
DC input rangeNominal value and lower/upper limitsAccording to the battery discharge curve
AC outputVoltage and frequencyAccording to load requirements
WaveformSine wave / special arrangementAccording to load sensitivity
Transient loadPeak power and durationAccording to motor and capacitive loads
BypassManual / staticAccording to continuity requirements
SYSTEM ARCHITECTURE
Topology, protection and control
Topology and redundancy
- Single or parallel inverters
- N+1 modular arrangement option
- Static or manual bypass
- Single-/three-phase project architecture
Protection features
- DC input polarity and overcurrent protection
- AC short-circuit and overload protection
- Low/high DC voltage protection
- Overtemperature and unsuitable bypass source
Control and communication
- Local measurements and alarms
- Dry contacts and serial communication
- Remote on/off option
- Bypass synchronisation monitoring
Options
- Static bypass
- Parallel/N+1 arrangement
- Output transformer
- Remote monitoring
- Special DC input range
PROJECT INPUTS
Information for the right selection
Unknown values can be clarified through site inspection and engineering before quotation.
- 01
Minimum, nominal and maximum DC bus voltage
- 02
Load kW/kVA, power factor and starting current
- 03
Output voltage, phase and frequency
- 04
Bypass source and transfer requirements
- 05
Mechanical and environmental requirements
TECHNICAL QUESTIONS
Frequently asked questions
Can it supply any AC load?
Selection should not be based on nominal power alone without verifying starting, harmonic and power-factor characteristics.
Can it replace a UPS?
Where a reliable DC bus already exists, it may provide a suitable solution for specific critical AC loads.