RNHV high-voltage inverter IP30 degree of protection

Introduction: RNHV series intelligent high-voltage variable frequency speed regulation system adopts power unit series connection technology, directly outputs 6kV, 10kV voltage, belongs to high-high voltage source inverter. The company takes high reliability, easy operation and high performance as the design goal to meet the urgent needs of users for speed regulation and energy saving of fans and pumps, and improvement of production technology; In order to minimize the construction period of the installation and transformation of the high-voltage variable frequency speed control system, the system adopts an integrated design concept, including transformer cabinet, power cabinet, control cabinet, high-voltage switchgear (bypass cabinet optional) and other components and internal connections, users only need to connect high-voltage input and output cables, low-voltage control power supply and control signal lines. The whole system has been strictly inspected and tested before leaving the factory to ensure the quality and performance of each piece of equipment.

In order to meet the needs of the renovation project and reduce the investment of the new project, each functional component of the RNHV series high-voltage frequency conversion speed regulation system can be installed step by step, ensuring that the high-voltage frequency conversion speed regulation system will not have accidents during transportation and installation, convenient front and rear maintenance methods, high-performance important imported components, and production technology greatly reduce the requirements of the high-voltage frequency conversion speed regulation system on the site environment.

RNHV high-voltage inverter IP30 degree of protection

　　peculiarity

1) Adapt to harsh environments

-5°C-40°C working environment rated operation, no need to degrade;

Excellent heat dissipation design, S-shaped air duct, long life, large air volume cabinet top cooling fan, low wind resistance, high dustproof, easy to disassemble the air inlet filter;

Super power grid adaptability, can achieve non-stop work at +10——-25% rated voltage;

Circuit board coating is designed to withstand the environment;

Large margin design, the power unit is designed and operated according to 120% load, and all electronic components are designed with 90% derating according to national standard specifications.

2) Superior performance

Integrated V/F control mode, PG vector control mode, no PG vector control mode;

Multi-function adaptive V/F feature ensures maximum starting torque;

DSP+ Field Oriented (FOC) control technology ensures the best dynamic performance;

CAN bus communication torque distribution control is suitable for multi-machine reconnection;

Precise inverter nonlinear compensation obtains good low-speed characteristics;

Neutral drift technology can ensure the maximum output power as much as possible and reduce derating when the unit is running in the bypass;

unit automatic bypass technology;

Perfect fault self-diagnosis and self-repair capabilities;

Synchronous switching;

3) Higher reliability

The input on the grid side is perfect and there is no need for any harmonic control and suppression device;

The efficiency of the whole machine is more than 96%;

High-high structure, direct output 6KV (or 10KV) high voltage, no change to the motor;

Forward and reverse speed tracking start function (flying car start), especially suitable for wind turbine loads.

4) High-quality after-sales service

Provide a fast one-stop service throughout the life of the equipment

Advice and follow-up from specification development to after-sales service

Service outlets all over the country

Product parameters

input

Power supply: 3-phase 6kV, 10kV, 50/60HZ

Input voltage range: voltage: -15%-+10%; Frequency; ±2%

output

Rated voltage: 3-phase 6kV, 10kV, 50/60HZ

FM range: 0-120HZ

SET RESOLUTION: 0.01 HZ

Overcurrent capability: 120% of rated output current, 1 minute; 180% of rated output current, immediate protection

control

Control mode: V/F, with PG vector control, without PG vector control

Synchronous switching: The inverter follows the voltage phase and frequency of the power grid to achieve the state of grid-connected operation with the power grid, and realizes the smooth switching from frequency conversion to power frequency without impact.

Torque compensation: automatic torque increase when starting, reaching more than 150%.

Slip compensation: Compensates for speed drop under load and improves the hardness of mechanical characteristics

Upper and lower frequency: You can set the upper and lower frequency.

Jump frequency: The jump frequency can be set in 3 groups

Speed tracking and restarting: When the motor loses power and flies, the inverter can automatically search for the speed of the motor and track the start-up operation.

Acceleration and deceleration time: 0.1 - 3600 sec, acceleration and deceleration time can be set independently.

Acceleration and deceleration integration types: Linear, S1 and S2 curves can be selected to meet the needs of a variety of different applications.

Operation mode: local operation, local operation, remote operation.

Parking mode: free parking, deceleration parking and deceleration plus DC braking parking can be selected.

PID closed-loop control: It can be applied to a variety of different closed-loop control systems such as flow, pressure, temperature, etc.

Neutral point drift: any power unit can be bypassed, through the neutral point drift technology, the three-phase output is still balanced, so that the unit can be bypassed to ensure that the output power of the inverter is maximized, and to ensure that when a single unit fails, it can be bypassed and does not affect the normal production operation.

Automatic unit bypass: When a unit fails, the inverter can automatically bypass the faulty unit and continue to operate through neutral drift technology without manual intervention. When more than 2 units are bypassed, the user only needs to derate the operation as appropriate.

Power-off and restart: When the power grid is abnormally power-off, after the power grid is restored within the set time, the inverter can be restarted and automatically restored to the state before the power-off, without manual intervention.

Frequency setting: analog input signal setting through: 0-10VDC voltage signal, 0-20mA, 4-20mA current signal setting. Multi-segment frequency selection setting: It can be combined by the digital input port to select 1 to 7 steps of frequency operation.

Fieldbus: Modbus, Tcp/ip, Profibus-DP

Operation status output signal: relay output: selectable to indicate the operation status such as operation, stop, and fault;

Analog output: Frequency, current, voltage, speed and other operating parameters can be selected.

display

Running/Stopping: Frequency, current, voltage, and power are displayed.

When setting: Displays the set menu number or set parameter value.

When a function is operating: displays the function information prompt information that is being operated.

Alarm, failure: display various alarms, fault codes.

protection

Overload protection: monitor the output current of the inverter, and protect the inverter in case of overload.

Overvoltage protection: detect the overvoltage of the DC bus of the unit, and protect the inverter when the input overvoltage of the inverter.

Surge voltage protection: Monitor the inverter when there is a surge voltage between the input power side lines and between the lines and ground.

Undervoltage protection: monitor the input voltage, and protect the inverter when undervoltage.

Overheat Protection: Monitor the temperature rise of the radiator when it exceeds the set value, and protect the inverter.

Short-circuit protection: Monitor the inverter when the output side of the inverter is short-circuited or overcurrent-induced.

Motor overload protection: monitor the motor when the motor is overload running, and protect the motor.

Phase loss protection: protect the inverter when monitoring the input voltage phase loss.

environment

Place of use: indoor, below 1000 meters above sea level, no corrosive gas or flammable gas; No dust, oil mist and water droplets, etc., prevent direct sunlight, no strong magnetic field interference. Altitude above 1000m requires derating.

Operating temperature: -5°C - +40°C

Humidity: 5 —— 95%RH (no condensation)

Vibration: ≤0.5g

Storage temperature: -40°C - +70°C

Degree of protection: IP30

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This article introduces RENLE RNHV high voltage inverter protection grade IP30 products, if you are interested in RENLE inverter, please also contact our customer service, we are looking forward to your call, hope our technology and service can bring you a better experience.

RNHV high-voltage inverter IP30 degree of protection

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