EMHEATER Products and Services Blog – VSD Category
The following products are available from local suppliers (not sold/distributed by Clean Imports). Prices are last known prices. PLEASE CONTACT THE RELEVANT SUPPLIER FOR MORE DETAILS AND UPDATED PRICING. Remote Monitoring and Control Devices SMS, Handheld Remote, Smartphone Solutions … Continued
Understanding Harmonics VSD Working Principle VSDs consist of three sub-systems: the Diode bridge converter, DC Bus, and IGBT output inverter. The Diode bridge input rectifier rectifies the incoming AC voltage into a DC voltage. The DC Bus system utilises DC … Continued
Understanding EMI Electromagnetic Interference (EMI) or Radio Frequency Interference (RFI) is electromagnetic signals that interfere with the normal operation of electrical equipment. EMI problems often result in poor equipment performance (contributing to a loss of serial communication, nuisance VSD trips, … Continued
AGRICO – ADVANCED REMOTE CONTROLLED IRRIGATION -> integrated with EMHEATER Variable Speed Drives Agrico Web Control AGRICO offers the ultimate remote irrigation solution designed to provide simple yet effective control over irrigation systems, this solution allows farmers to fully … Continued
VSD Leader-Follower Applications In the past machine ‘synchronisation’ were done by using one large electric motor with a long central line shaft and many belts and cams to mechanically fix different axes together. This design had many flaws with belts … Continued
VSD Constant Water Pressure Setup The pumping industry has seen a big uptake in the use of Variable Speed Drives (VSDs), which opened many possibilities in pumping system controls, including methods for controlling the discharge pressure in pumping systems. The Problem Water pressure … Continued
Porcelain Windings (Braking Resistors) TCGC offers the following EMHEATER VSD (380V) Porcelain Winding (Braking Resistor) products: VSD kW Braking Resistor Resistor Model 0.75 100W / 500Ω PW-100/500 1.5 300W / 400Ω PW-300/400 2.2 500W / 250Ω PW-500/250 4 800W / 150Ω … Continued
Aluminium Housed Braking Resistors TCGC offers the following EMHEATER VSD (380V) Aluminium Housed Braking Resistor products: VSD (kW) Brake Unit Resistor 1.5 EMHEATER VSDs up to 22kW include built-in Braking Switches 480W / 220Ω 2.2 525W / 200Ω 4 850W / 130Ω … Continued
AC EMC/EMI Filters (Noise Filters) TCGC offers the following EMHEATER VSD AC EMC/EMI Filter products: Input Filters EM-FIT3 (3-Phase ~380V) EM-FIT5 (3-Phase ~525V) EM-FIT6 (3-Phase ~690V) Output Filters EM-FOT2 (3-Phase ~220V) EM-FOT3 (3-Phase ~380V) EM-FOT5 (3-Phase ~525V) EM-FOT6 (3-Phase ~690V) *Manufactured with Amp ratings according to specific requirement. … Continued
DC Chokes (Reactors) TCGC offers the following EMHEATER VSD DC Choke/Reactor products: EM-RAD2 (3-Phase ~220V) EM-RAD3 (3-Phase ~380V) EM-RAD5 (3-Phase ~525V) EM-RAD6 (3-Phase ~690V) *Manufactured with Amp ratings according to specific requirement. *Custom Voltage options and pricing available on request only. Installation of DC Bus/Link … Continued
Dynamic Braking Systems TCGC offers the following EMHEATER VSD Dynamic Braking System products: Brake Units EM-BU2: For 30~45kW Drives (Light Duty) – with matching resistor/s EM-BU3: For 55kW Drive (Light Duty) or 30~45kW Drives (Heavy Duty) – with matching resistor/s EM-BU3H: … Continued
Sine Wave Filters TCGC offers the following EMHEATER VSD Sine Wave Filters products: EM-SWF3 (3-Phase 380V) EM-SWF5 (3-Phase 525V) *From 0.75kW up to 630kW. *Manufactured with Amp ratings according to specific requirement. *Custom Voltage options and pricing available on request only. … Continued
AC Chokes (Reactors) TCGC offers the following EMHEATER VSD AC Choke/Reactor products: Input Chokes (Line Reactors): EM-RAI3 (3-Phase ~380V) EM-RAI5 (3-Phase ~525V) EM-RAI6 (3-Phase ~690V) Output Chokes (Load Reactors): EM-RAO2 (3-Phase ~220V) EM-RAO3 (3-Phase ~380V) EM-RAO5 (3-Phase ~525V) EM-RAO6 (3-Phase ~690V) *Manufactured with Amp ratings according to specific … Continued
VSD Peripherals TCGC offers the following EMHEATER VSD Peripheral products: DC Bus/Link Chokes/Reactors AC Chokes/Reactors (Input and Output) AC EMC/EMI Filters for Noise Disturbance (Input and Output) Sine Wave Filters Dynamic Braking Systems with: Porcelain Braking Resistors/Windings; or Aluminium Housed Braking … Continued
Variable Speed Drives TCGC offers the following EMHEATER Variable Speed Drive models: G Series: Vector Control Inverters for General Use: Single-Phase to 3-Phase Converters G1: Single-Phase (220V±15%) Input and 3-Phase (~220V) Output G13: Single-Phase (220V±15%) Input and 3-Phase (~380V) … Continued
VSD impact on Power Factor A Variable Speed Drive (VSD), delivers power from the source (typically the utility) to a motor in three basic steps: The Rectifier converts AC power to DC power; The DC Bus receives, smooths, and stores … Continued
What are VSDs Used for? VSDs can be set up to the requirements of various individual applications. Compared to Soft Starters, Variable Speed Drives (VSDs) offer much more flexibility in terms of features and settings and, depending on the application, … Continued
The EMHEATER Variable Speed Drives (VSDs) and Solar Drives include 35 types of warning/protection functions. In case of a fault, the protection function will be triggered, the inverter will stop output, and the faulty relay contact of the inverter will … Continued
How do Variable Speed Drives (VSDs) Work? AC induction motor speed depends on the number of motor poles and the frequency of the applied power. When operated from a constant frequency power source (typically 50Hz in South Africa), AC induction … Continued
Solar Drive vs VSD AC pumps are usually used for high volumes of water supply and require well-regulated AC power (usually 3-Phase). Using a Variable Speed Drive (VSD), pump motor efficiency can be increased, and electricity use can be decreased … Continued
What is the difference between Variable Frequency Drive’s (VFDs) and Variable Speed Drive’s (VSDs)? There are two primary methodologies for controlling electrical motors with subtle differences: – Variable Speed Drives (VSDs): Controls the speed of a motor by changing the … Continued
VSD vs Soft Starter Soft Starters utilise silicon-controlled rectifiers (SCRs) to perform phase angle control, while Variable Speed Drives (VSDs) use insulated-gate bipolar transistors (IGBTs) to perform pulse-width-modulation (PWM) control. VSD technology continues to evolve, while Soft Starters are considered … Continued
Using VSDs for Lowering Costs The electric motors that drive pumps on irrigation systems are extremely energy-intensive, making irrigation systems one of the largest consumers of electricity on South African farms. Variable Speed Drives (VSDs) can reduce energy consumption at … Continued
Using VSDs for Lowering Costs By virtue of their energy intensiveness, heating, ventilation and air conditioning (HVAC) systems account for a large percentage of companies’ energy costs. Continued misuse can dramatically impact on the effectiveness of companies’ energy-saving projects and … Continued
Using VSDs for Lowering Costs Many applications in the oil, gas and petrochemical industries rely on motor driven pumps and pumping systems that are energy-intensive. Installing Variable Speed Drives (VSDs) on motor driven equipment can be an effective energy and … Continued
Using VSDs for Lowering Costs Because of the growing consciousness of the enormous challenges of feeding the world’s expanding population in future, the concepts “farm to the fork” and “farm for the future” are extremely important. Both concepts place the … Continued
New EM15 Series VSDs and Solar Drives TCGC is pleased to announce that we will be receiving our first shipment of the new EMHEATER EM15 Series VSDs and Solar Drives (replacing the previous EM12 Series) during November 2020. Below is … Continued
Single-Phase To 3-Phase Converters If you have a 3-Phase motor/device and do not have ready access to 3-Phase power, there are workarounds you can use to get your equipment properly powered. Numerous types of 3-Phase Converters are available. These units … Continued
Advantages of using a Variable Speed Drive (VSD) A Variable Speed Drive (VSD) is also called a Variable Frequency Drive (VFD), Adjustable Speed Drive, Adjustable Frequency Drive, AC Drive, Microdrive or Inverter. A VSD is a type of motor controller … Continued
EMHEATER – Variable Speed Drives (VSDs) EMHEATER Variable Speed Drive Product Intro Video… Manufacturers of Variable Speed Drives, Soft Starters, Solar Drives and Servo Drives/Motors. For more information regarding VSDs, please refer to the following related blog posts: What is … Continued
Variable Speed Drives (VSDs) Explained Variable Speed Drives (VSDs) are also known as Adjustable Speed Drives, Variable Frequency Drives (VFDs), Adjustable Frequency Drives, Inverter Drives, Microdrives or AC Drives. These drives are an excellent method for controlling motor speed in … Continued
