INDUSTRIAL INVERTER SYSTEM UNITS
Industrial Inverter systems are used for rugged environments and designed particularly to safeguard critical loads in industrial applications. An galvanically isolationed transformer is used to isolate load from input supply. Otherwise, voltage transients, created by degraded mains supply, can seriously damage both inverter and the critical load.
The inverter converts DC voltage into pure sinusoidal AC voltage with constant amplitude and stable frequency. The unit works with an IGBT inverter bridge with PWM (pulse width modulation) having high efficiency in the partial load range as well as achieving a low distortion factor at non-linear load. Inverter output encompasses 6 IGBT modules, boosting the instant power capacity of the inverter by double fold with comparison to regular systems. This feature allows the inverter to handle higher capacity loads (inrush currents) with smaller capacity devices. In addition, switching at high frequency – 16KHz – keeps the output sin wave (THD) undistorted providing reliable solutions for nonlinear loads. On LCD panel all measurement values, real time base events and failures can be viewed and communicate remotely with RS485 port.
In the event of mains interruption or failure, the battery connected to the DC input feeds the load automatically and without interruption. If the battery discharge limit is exceeded, the inverter automatically turns off and a warning is given shortly before the discharged voltage limit is reached. Automatic change-over of the load to the bypass mains or a suitable spare supply occurs if the supply from the inverter falls outside the preset tolerances.
Having mono-phase and three-phase alternatives PMI Inverter systems are ideal for off-grid solar applications, wind turbine systems and for specific requirements ofmission-critical processes where there is a need for reliable AC/DC conversion
– IGBT (PWM) controlled inverter with high frequency switching to ensure no waveform distortion for reactive and nonlinear loads.
– Galvanically isolated output (inverter transformer is standard, bypass transformer is optional) for maximum safety on critical loads
– Thyristor controlled static bypass to ensure uninterrupted transfer between inverter and bypass source
– Communication (Free alarm contacts, remote PC monitoring, Modbus, SNMP, Profibus, DNP 3.0 via RS 232, RS 485, USB or Ethernet TCP/IP ports)
- Manual Bypass with 3 positions
- LC Filter for DC Input
- Electronic Over / Under Voltage, Over Current and Short Circuit Protections
- Parallel Redundant Operation (Optional)
- Internal Over Temperature protection
- LCD Panel with Mimic Diagram and LED Indication
- Event History for all Electrical values and failures
- 8 units Free Alarm Contacts
| GENERAL | |
|---|---|
| Model | INV Series |
| Topology | Online DC/AC Inverter System with Output Isolation Transformer |
| Control | Microprocessor Controlled System |
| INVERTER | |
| Topology | Full Bridge High Frequency IGBT Inverter Modules (3 Phase / 1 Phase) |
| Isolation Transformer | Galvanically Isolated (standard) |
| Power Factor | 0.8 |
| Nominal Input Voltage | 110 VDC / 125 VDC / 144 VDC / 220 VDC / 264 VDC / 360 VDC +/-15% |
| Nominal Output Voltage | 110 VAC / 220 VAC / 230 VAC / 240 VAC / 380 VAC / 400 VAC / 415 VAC / 480 VAC |
| Voltage Tolerance | |
| static | ± 1% |
| dynamic with 100% load change | ± 10% in 50 msec. |
| Overload | |
| Between 100% - 125% | 10 min. |
| Between %125 - 150% | 1 min. |
| Between %150 - 300% | 1 sec. |
| Waveform | Pure Sinusoidal |
| Total harmonic Distortion (ThDv) | |
| at Linear Load | < 3% |
| at Non-Linear Load | < 7% |
| Crest Factor | 3 : 1 (1 second) |
| Nominal Output Frequency | |
| while synchronized with the line | 50hz/ 60hz ±2% |
| while not synchronized with the line | 50hz/ 60hz ± 0.1% |
| Switching Frequency | 16KHz |
| Short-circuit behaviour: | 3 x Nominal Output Current |
| Protection | Short Circuit Protection, Over Voltage Protection, Under Voltage Protection, Over Current Protection and Over Temperature Protection |
| Front Panel Indicatiors | Inverter not Synchronized, Inverter DC Input High/Low, Bypass Out of Limit, Battery Fuse OFF, Bypass MCB OFF, DC Input MCB OFF, Inverter Overload, Internal Overtemperature, Inverter Failure, IGBT SCR Fuse Failure, Bypass Overtemperature Failure, Inverter Output High / Low, Inverter Overtemperature |
| Front Panel Set Menus | UPS Mode (UPS, ECO, Bypass Inhibit), DC Cut off, Low Battery Level, Output Voltage Adjustment, Set Output Frequency, Auto Start ON/OFF, Date, Alarm Sound ON/OFF, Password |
| Front Panel Monitoring Menus | Inverter Frequency, Inverter Output Voltage (per phase), Inverter/Bypass load percentage, Bypass Frequency, Bypass Voltage (per phase), Internal Temperature, DC Bus Voltage |
| Alarm Contacts (1 Open 1 Closed) | Inverter Failure, Overtemperature, Load on Bypass / Inverter, Inverter not Synchronized, DC Input Low /High, Battery Fuse OFF, Bypass out of Limit, Inverter Overload |
| Overall Inverter Efficiency (at full load) | >85% / >90% depending on DC Bus Voltage |
| Communication (OPTIONAL) | RS 485 / RS 232 / Ethernet Ports, Remote PC Control, Modbus, Profibus, SNMP, DNP 3.0 Protocols and TCP/IP options |
| Paralleling (OPTIONAL) | Parallel Redundancy |
| STATIC BY-PASS | |
| Topology | Uninterruptible static switch with back-feed protection |
| Bypass System | No break semiconductor thyristor - thyristor |
| Isolation Transformer (OPTIONAL) | Galvanically Isolated |
| Nominal Frequency | 50Hz / 60Hz ± 2% |
| Inverter/Bypass transfer time | |
| Inverter failure | Max. 5 msec. |
| Overload or manual transfer | 0 msec. |
| Bypass/Inverter transfer time | 0 msec. |
| Efficiency | >99% |
| MECHANICAL BY-PASS | |
| Topology | Make before break mechanical switch with locking system (OPTIONAL:External By-Pass Switch) |
| SAFETY & ENVIRONMENT | |
| Over Voltage Protection | IEEE 587 4500 A, 110 Joules (standard) / 40kA Surge Arrestor (OPTIONAL) |
| Electrical Interference Reduction | FCC Part 15 Class B |
| Electrical Standards | IEC 62040-3 (Performance), EN 50091-1 (Security) / EN 50091-2 (EMC) |
| Protection Level / Color | IP 20 / RAL 7035 (Standard), (Higher IP rating and different colors are available, please consult) |
| MTBF | 100,000 hrs. (w/out battery group) |
| Enclosure Material | Mild Steel, Zinc-phosphate coated; 100 µm electrostatic paint; 1.5 mm thickness |
| Cooling | Forced Fan (Standard) / Natural (OPTIONAL) |
| Cable Entry | Bottom (Standard) / Top (OPTIONAL) |
| Heater & Lightning | OPTIONAL |
| Distribution | OPTIONAL |
| Operating Temperature | -10 / +40 °C. (Higher operating temperatures are available, please consult) |
| Relative humidity | 5 - 90 % |
| Operating Altitude | Max. 1000 Mt. (Higher altitudes requires de-rating, please consult) |
| Noise Level | Max. 60 db |