Model Amount: EM12-G3-355
Output Energy: 1 – 200KW
Enter Voltage: 110v/120v/220v/230v
Output Voltage: ~rated Enter Voltage
Kind: AC-DC-AC, AC/DC/AC inverters
Output Sort: Triple
Output Existing: -30A
Output Frequency: 50-60HZ
Measurement: 297.5*468*125mm
Weight: 3.5KG
Identify: frequency converter for 3hp water pump
Gain: built-in IGBT
OEM: Recognized
Certificate: CE,SGS
Shipping time: 1-7 organization working day
Guarantee: 18 Months
Color: White
Management model: Sensorless Vector
Shell: plastic/metal
Packaging Information: Common export packing, suited for lengthy length transportation.
Port: HangZhou

355kw 470hp variator velocity travel vector management EM12-G3-355 ac motor velocity controller and variable velocity ac generate
Merchandise OverviewsWe have many kinds of frequency drive as below:
a.1ph 220V enter and 3ph 220V output
b.3ph 220V input and 3ph 220V output
c.3ph 380V enter and 3ph 380V output
d.3ph 480V enter and 3ph 480V output
e.1ph 220V input and 3ph 380V output
f.1ph 220V enter and 1ph 220V output
g.DC 300~380V/450-650V enter and AC 220V/380V output solar inverter

Merchandise Requirements
EM12 series frequency inverter is based on the precisely understanding of EMHEATER for customer’s specifications, inheriting the constant pursuit of EMHEATER for high-top quality, .75kw 380v variable speed travel variator frequency inverter large dependability. EM12 sequence frequency inverter will deliver you a new making use of expertise with its excellent efficiency and powerful characteristics.

Merchandise Features
Characteristic:1.EM12 is 1st course frequency inverter with very sturdy software program and components.2.It has servo generate characteristic, with ideal pace management mode, and exceptional torque management manner.3.It can preserve 2 team motor parameters , and can push synchronous motor and asynchronous motor.4.It has sensor-significantly less vector management (SVC), vector control+ PG V/F management and V/F separation management.5.It has 49 sorts electronic enter capabilities and 38 types digital output features.6.It has S curve of acceleration and deceleration, 3 Period 380v Variable Frequency Generate 1.5kw Pace Variator consumer can self defined S curve turning time.7.The IGBT provider frequency can auto adjustment in accordance to heat sink temperature.8.35 sorts security purpose, which includes auto detecting brief circuit soon after electricity on.9.Such as textile swing frequency and skip frequency purpose, and so on.10.Voltage Range:220V~240V 380V~440V.eleven.Input Frequency Selection:forty five~65Hz.12.Output Voltage Variety:0V~rated enter voltage.thirteen.Output Frequency Selection:V/F( ~3000Hz) Vector Control (~300Hz).fourteen.Overload Potential:60s with a hundred and fifty% of rated current, 3s with 180% of rated present.fifteen.From .75~7.5KW Plastic house 220V Vector manage VFD inverter 4kw 5.5kw 7.5kw variable frequency travel 5hp 7.5hp 10hp motor speed variator 11~400KW is metal house.16.Velocity Precision: ±0.5% (SVC) ±0.02% (VC).seventeen.Pulse setting input: 0Khz~100Khz.eighteen.All product created-in RS485 card, and authorized by CE.19.EM12-G3/P3 types are integrated IGBT.twenty.The malfunction ratio is .1% within 18 months warranty.

Solution of EMHEATER

Technological Profession

hammer crusher machine
Brick manufacturing unit
Tower crane transformation venture
Plastic Injection Molding Machine Air Conditioning Technique Air Compressor Pump Elevator System Steel Processing Equipment Conveyor Device Textile Device Design Developing Customer Merchandise
and etc

Packaging & Delivery

Worm gear reducer

A worm gear reducer is a gear reducer that uses a worm gear train to reduce the required force. Unlike traditional gear reducers, these units are small and require low horsepower ratings. This reduces their efficiency, but their low cost and compact design help make up for this shortcoming. However, these gear reducers have some drawbacks, including their tendency to lock up when reversing.

high efficiency

High-efficiency worm reducers are ideal for applications where high performance, repeatability, and accuracy are critical. It consists of an input hypoid gear and an output hypoid bevel gear. The input worm rotates perpendicular to the output worm, so for every revolution of the input worm, the output gear makes one revolution. This arrangement reduces friction (another source of energy loss) in a high-efficiency worm gear to at least two arc minutes.
Compared with worm gear reducers, hypoid gearmotors offer several advantages, including lower operating costs and higher efficiency. For example, hypoid gear motors can transmit more torque even at high reduction ratios. Also, they are more efficient than worm gear reducers, which means they can produce the same output with a smaller motor.
In recent years, the efficiency of worm gear reducers has been dramatically improved. Manufacturers have made great strides in materials, design, and manufacturing. New designs, including dual-enveloping worm gear reducers, increase efficiency by 3 to 8 percent. These improvements were made possible through countless hours of testing and development. Worm gear reducers also offer lower initial costs and higher overload capability than competing systems.
Worm gear reducers are popular because they provide maximum reduction in a small package. Their compact size makes them ideal for low to medium-horsepower applications and they are reticent. They also offer higher torque output and better shock load tolerance. Finally, they are an economical option to reduce the device’s power requirements.

low noise

Low-noise worm gear reducers are designed to reduce noise in industrial applications. This type of reducer uses fewer bearings and can work in various mounting positions. Typically, a worm reducer is a single-stage unit with only one shaft and one gear. Since there is only one gear, the noise level of the worm gear reducer will be lower than other types.
A worm gear reducer can be integrated into the electric power steering system to reduce noise. Worm reducers can be made and from many different materials. The following three-stage process will explain the components of a low-noise worm reducer.
Worm gear reducers can be mounted at a 90-degree angle to the input worm shaft and are available with various types of hollow or solid output shafts. These reducers are especially beneficial for applications where noise reduction is essential. They also have fewer parts and are smaller than other types of reducers, making them easier to install.
Worm gear reducers are available from various manufacturers. Due to their widespread availability, gear manufacturers maintain extensive inventories of these reducers. The worm gear ratio is standard, and the size of the worm gear reducer is universal. Also, worm gear reducers do not need to be sized for a specific purpose, unlike other load interruptions.


A worm gear reducer is a transmission mechanism with a compact structure, large transmission ratio, and self-locking function under certain conditions. The worm gear reducer series products are designed with American technology and have the characteristics of stable transmission, strong bearing capacity, low noise, and compact structure. In addition, these products can provide a wide range of power supplies. However, these worm reducers are prone to leaks, usually caused by design flaws.
Worm gear reducers are available in single-stage and double-stage. The first type consists of an oil tank that houses the worm gear and bearings. The second type uses a worm gear with a sleeve for the first worm gear.
When choosing a gear reducer, it is essential to choose a high-quality unit. Improper gear selection can cause rapid wear of the worm gear. While worm gear reducers are generally durable, their degree of wear depends on the selection and operating conditions. For example, overuse, improper assembly, or working in extreme conditions can lead to rapid wear.
Worm reducers reduce speed and torque. Worm gears can be used to reduce the speed of rotating machines or inertial systems. Worm gears are a type of bevel gear, and their meshing surfaces have great sliding force. Because of this, worm gears can carry more weight than spur gears. They are also harder to manufacture. However, the high-quality design of the worm gear makes it an excellent choice for applications requiring high torque and high-speed rotation.
Worm gears can be manufactured using three types of gears. For large reduction ratios, the input and output gears are irreversible. However, the worm reducer can be constructed with multiple helices. The multi-start worm drive also minimizes braking effects.

Self-locking function

The worm reducer is self-locking to prevent the load from being driven back to the ground. The self-locking function is achieved by a worm that meshes with the rack and pinion. When the load reaches the highest position, the reverse signal is disabled. The non-locking subsystem back-drives the load to its original position, while the self-locking subsystem remains in its uppermost position.
The self-locking function of the worm reducer is a valuable mechanical feature. It helps prevent backing and saves the cost of the braking system. Additionally, self-locking worm gears can be used to lift and hold loads.
The self-locking worm gear reducer prevents the drive shaft from driving backward. It works with the axial force of the worm gear. A worm reducer with a self-locking function is a very efficient machine tool.
Worm gear reducers can be made with two or four teeth. Single-ended worms have a single-tooth design, while double-ended worms have two threads on the cylindrical gear. A multi-boot worm can have up to four boots. Worm reducers can use a variety of gear ratios, but the main advantage is their compact design. It has a larger load capacity than a cross-shaft helical gear mechanism.
The self-locking function of the worm reducer can also be used for gear sets that are not necessarily parallel to the shaft. It also prevents backward travel and allows forward travel. The self-locking function is achieved by a ratchet cam arranged around the gear member. It also enables selective coupling and decoupling between gear members.

high gear ratio

Worm reducers are an easy and inexpensive way to increase gear ratios. These units consist of two worm gears – an input worm gear and an output worm gear. The input worm rotates perpendicular to the output worm gear, which also rotates perpendicular to itself. For example, a 5:1 worm gearbox requires 5 revolutions per worm gear, while a 60:1 worm gearbox requires 60 revolutions. However, this arrangement is prone to inefficiency since the worm gear experiences only sliding friction, not rolling friction.
High-reduction applications require many input revolutions to rotate the output gear. Conversely, low input speed applications suffer from the same friction issues, albeit with a different amount of friction. Worms that spin at low speeds require more energy to maintain their movement. Worm reducers can be used in many types of systems, but only some are suitable for high-speed applications.
Worm gears are challenging to produce, but the envelope design is the best choice for applications requiring high precision, high efficiency, and minimal backlash. Envelope design involves modifying gear teeth and worm threads to improve surface contact. However, this type of worm gear is more expensive to manufacture.
Worm gear motors have lower initial meshing ratios than hypoid gear motors, which allows the use of smaller motors. So a 1 hp worm motor can achieve the same output as a 1/2 hp motor. A study by Nissei compared two different types of geared motors, comparing their power, torque, and gear ratio. The results show that the 1/2 HP hypoid gear motor is more efficient than the worm gear motor despite the same output.
Another advantage of the worm gear reducer is the low initial cost and high efficiency. It offers high ratios and high torque in a small package, making it ideal for low to medium-horsepower applications. Worm gear reducers are also more shock-resistant.
China 355kw 470hp variator speed drive vector control EM12-G3-355 ac motor speed controller and variable speed ac drive     with Good quality China 355kw 470hp variator speed drive vector control EM12-G3-355 ac motor speed controller and variable speed ac drive     with Good quality
editor by czh 2023-02-10