Switched-Mode Technology: The WR-5073 utilizes advanced switched-mode technology, ensuring efficient power conversion and reliable operation.
High Efficiency: Designed for energy savings, this inverter achieves efficiency levels ranging between 81% and 91%, minimizing energy losses.
Good Regulation Dynamics: The inverter offers excellent control and response times, maintaining stable output under varying load conditions.
High Short-Circuit Current: Capable of delivering a high short-circuit current, the WR-5073 ensures robust performance even during fault conditions.
Short-Circuit Protection: The inverter is designed to be short-circuit proof, providing enhanced safety and reliability.
Compact Design: With its compact form factor, the WR-5073 is ideal for installations where space is limited.
Lightweight: The lightweight design facilitates easy handling and installation.
Deep Discharge Protection: The inverter includes deep discharge protection to extend the lifespan of connected batteries.
Electronic Bypass: An integrated electronic bypass allows for seamless switching between the inverter and mains power without interruption.
N or N+1 Operation (Optional): The inverter supports both standard and N+1 redundant operation, enhancing system reliability.
Battery Filter: Equipped with a battery filter, the inverter ensures clean and stable DC input power.

Technical Specifications

Rated Power (VA): Available in 1000, 1500, 2000, and 3000 VA models
DC Input Voltage:
24 V: 1000 VA
48 V: 1500 VA
60 V: 2000 VA
110 V: 3000 VA
220 V: 3000 VA
Input Voltage Range: -15% to +20% (for <48 V, -10% to +20%)
Output AC Voltage: 230 V ± 1%
Output Frequency: Available in 25 Hz, 100 Hz, or 50 Hz ± 0.1%
Total Harmonic Distortion (THD): <3% (with linear load)
Power Factor: 0.3 inductive to 0.8 capacitive; power reduction when deviating from cos φ = 0.8 inductive
Efficiency: 81% to 91%
Overload Capability:
125% for 10 minutes
110% for 20 minutes
Short Circuit Behavior:
Short-circuit proof, with a short-circuit current of 3x I_N for 20 milliseconds, followed by 2x I_N for 5 seconds
Noise Level: < 55 dB(A)
EMC Compliance: EN 61000-6-2, EN 61000-6-4
Test Voltages:
Input to Output: 3.75 kV AC
Input/Output to Ground: 2 kV AC
Cooling Type:
“AF” for forced air cooling
“AN” for natural air cooling
Permissible Installation Height: 1000 meters above sea level at rated load
Environmental Conditions:
Operation: 3K3 according to EN 60721-3-3
Operating Temperature: -5°C to +40°C
Dimensions: As per the datasheet
Protection Class: IP20, according to EN 60529

Execution and Operation

Design:
19-inch rack-mount or partial rack-mount for easy installation
Front-mounted input/output terminals
Front panel on/off switch for the inverter
Operating mode selector:
Continuous operation
Standby operation
Startup operation
Signaling (LED indicators on the front panel):
Consumer voltage OK
DC voltage OK
Load on inverter
Load on mains
Inverter fault
Phase position OK
Operation

Functionality

PWM Technology: The inverter operates using PWM technology with state-of-the-art power transistors for efficient power conversion.
Galvanic Isolation: The input and output are galvanically isolated, ensuring safe and interference-free operation.
Uninterruptible Electronic Bypass: An electronic bypass is integrated, enabling seamless transition between the inverter and mains power during maintenance or faults.
Remote Signaling (2 potential-free contacts):
Inverter fault
Inverter operation

Protection and Monitoring Features

Overload and Short-Circuit Protection: The inverter is equipped with robust protection mechanisms to handle overloads and short circuits effectively.
Input Under-Voltage Protection: The inverter monitors the input voltage and provides protection against under-voltage conditions.
Output Over-/Under-Voltage Protection: Both over-voltage and under-voltage conditions on the output are monitored and controlled.

Optional Features

External Remote Signaling: Additional remote signaling options can be provided for external monitoring.
Special Frequencies: The inverter can be configured to operate at special frequencies to meet specific application requirements.

This static inverter, WR-5073, is designed for high performance and reliability, making it suitable for a wide range of industrial and critical applications. Its advanced features and robust construction ensure continuous and stable power supply, even under demanding conditions.

The post Inverter Modules first appeared on Westek Electronics.

Advanced Transistor Inverter Technology: The WR-5080 and WR-5081 inverters utilize transistor inverters with PWM (Pulse Width Modulation) technology, ensuring efficient and precise power conversion. The incorporation of an isolation transformer in the inverter output enhances the quality and safety of the power delivered to the load.
Electronic and Manual Bypass: Both electronic and hand-operated bypass options are integrated into the system, allowing seamless transitions between inverter and bypass modes during maintenance or faults, ensuring uninterrupted power delivery.
User-Friendly Interface: A color TFT touchscreen display provides an intuitive interface for easy monitoring and control of the inverter’s operation. The clear display simplifies the management of system parameters and enhances user experience.
High Power Availability: The WR-5080 supports single-phase systems up to 200 kVA, while the WR-5081 supports three-phase systems up to 500 kVA. This scalability ensures that the inverters can meet a wide range of power requirements.
Parallel Operation Capability: Up to eight inverter units can be connected in parallel, allowing the system to scale up to a total of 1500 kVA. This feature provides flexibility in designing larger power systems while maintaining high availability.
Two-Stage Fan Monitoring: The power units are equipped with two-stage fan monitoring (warning and shutdown) to ensure the longevity and reliability of the inverters by preventing overheating.

Customization Options

Input Voltage Flexibility: Available input voltage options include 24, 48, 60, 110, 220, and 372 V DC, with the possibility of configurations up to 1000 V for specific applications.
Isolating Transformer Compliance: The inverters can be equipped with isolating transformers that meet VDE 0558-507 or ÖVE/ÖNORM E 8007 standards for bypass cabinets.
Parallel Operation Support: Parallel running devices can be integrated, enabling the creation of highly scalable and redundant power systems.
Interface Variety: A wide range of communication interfaces are available, including SNMP, Modbus, and other industry-standard protocols, to facilitate easy integration into existing infrastructure.
Enhanced Cabinet Configurations: Cabinets can be customized with options such as interior lighting, heating, sealed cable entry, and protection classes higher than IP20, ensuring that the inverters can operate in a variety of challenging environments.

Technical Specifications

Rated Power:
WR-5080: 5-200 kVA (1~)
WR-5081: 5-500 kVA (3~)
Execution: Transistor, PWM, galvanically isolated
DC Input Voltage: 24, 48, 60, 110, 120, 220, up to 1000 V possible
AC Input Voltage (Bypass):
1/N/PE AC 230 V
3/N/PE AC 400/230 V
AC Input Voltage Tolerance: ± 10%
Frequency: 50 or 60 Hz ± 5%
Nominal AC Output (Inverter Output):
Voltage: 1/N/PE AC 230 V or 3/N/PE AC 400/230 V
Frequency: 50Hz ± 5%
Overload Capability:
10 x I_N for 10 ms
1.50 x I_N for 60 seconds
1.25 x I_N for 10 minutes
1.10 x I_N for 20 minutes
Short Circuit Behavior:
Short-circuit proof, with a short-circuit current of 2x I_N (1-phase) and 2-4x I_N (3-phase)
Inverter stop after 5 seconds
Permissible Power Factor: 0.0 inductive to 0.0 capacitive (Power reduction when deviating from cos φ 0.8 ind.)
Permissible Crest Factor: ≤ 2.3 at rated power
Output Voltage Adjustment Range: ± 5% (with a restriction of nominal data at +5%)
Settling Time: < 4 ms (instantaneous value control)
Waveform: Sinusoidal with a distortion factor of ≤ 3% under linear load
Synchronization Range: 50Hz ± 3%
Frequency Change Rate: 1Hz/s

Environmental and Safety Standards

Protection Class (EN 61140): I
Protective Conductor Current: < 5% I_N, typically 50 mA
Protection Class (EN 60529): IP 20 (floor IP00)
Permissible Installation Height: 1,000 m above sea level, with a minimum air pressure of 870 hPa
Painting: RAL 7035, solid textured paint
Cooling Type: Natural cooling (“ON”) or forced air cooling (“AF”)
Relay Interface: 8 signals with 2 potential-free changeover contacts per signal, covering:
Inverter operation
Network operation
Battery discharge
Advance warning of deep discharge
Network failure
System malfunction
2x Reserve
Environmental Conditions:
Storage: EN 60721-3-1, 1K21 / 1M11, +5 to +40 °C
Transport: EN 60721-3-2, 2K12 / 2M4, -45 to +70 °C
Operation: EN 60721-3-3, 3K22 / 3M11, +5 to +40 °C, 5-85% relative humidity, no condensation, Pollution level 2

Compliance and Standards

EMC Directive: 2014/30/EU
RoHS Directive: 2011/65/EU
EMC Standards: EN61439-1, EN61439-2, EN 62040-2

These static inverters provide a reliable and versatile solution for maintaining power continuity across various critical applications. Their modularity, scalability, and customization options make them adaptable to a wide range of environments and power requirements.

The post Static Inverters first appeared on Westek Electronics.