Solar Drive PV Array Design EMHEATER offers 3 different Solar Drive (Solar VSD) models as follows: SP1S: Solar DC 300-380V (or Single-Phase AC 200-240V) Input and Single-Phase (200-240V) AC Output SP1: Solar DC 300-380V (or Single-Phase AC 200-240V) Input and … 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 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 PW-800/150 … Continued
Aluminium Housed Braking Resistors TCGC offers the following EMHEATER VSD Aluminium Housed Braking Resistor products: Model VSD kW Resistor AHR-100/500 0.75 100W / 500Ω AHR-300/400 1.5 300W / 400Ω AHR-500/250 2.2 500W / 250Ω AHR-800/150 4 800W / 150Ω AHR-1200/100 5.5 … Continued
AC EMC/EMI Filters (Noise Filters) TCGC offers the following EMHEATER VSD AC EMC/EMI Filter products: Input Filters: EM-FIT3 (3-Phase 380-450V) EM-FIT5 (3-Phase 525-575V) Output Filters: EM-FOT3 (3-Phase 380-450V) EM-FOT5 (3-Phase 525-575V *From 0.75kW up to 560kW. *Manufactured with Amp ratings according … Continued
DC Chokes (Reactors) TCGC offers the following EMHEATER VSD DC Choke/Reactor products: EM-RAD3 (3-Phase 380-460V) EM-RAD5 (3-Phase 525-575V) *From 0.4kW up to 560kW. *Manufactured with Amp ratings according to specific requirement. *Custom Voltage options and pricing available on request only. Installation … Continued
Dynamic Braking Systems TCGC offers the following EMHEATER VSD Dynamic Braking System products: Brake Units (for VSDs form 0.75kW up to 500kW): EM-B U1 EM-B U2 EM-B U3 EM-B U3H EM-B U4H EM-B U5H With each Brake Unit requiring either: Porcelain … Continued
Sine Wave Filters TCGC offers the following EMHEATER VSD Sine Wave Filters products: EM-SWF3 (3-Phase 380-440V) EM-SWF5 (3-Phase 525-575V) *From 0.75kW up to 630kW. *Manufactured with Amp ratings according to specific requirement. *Custom Voltage options and pricing available on request … Continued
AC Chokes (Reactors) TCGC offers the following EMHEATER VSD AC Choke/Reactor products: Input Chokes (Line Reactors): EM-RAI3 (3-Phase 380-450V) EM-RAI5 (3-Phase 525-575V) Output Chokes (Load Reactors): EM-RAO3 (3-Phase 380-450V) EM-RAO5 (3-Phase 525-575V) *From 0.75kW up to 600kW. *Manufactured with Amp ratings … 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
Servo Drives TCGC offers the following EMHEATER Servo Drive models: Z Series: Vector Control Inverters / Servo Drives for Injection Moulding Machines and Permanent Magnet AC Motors – PMAC: Z1: Single-Phase (200-240V) Input and 3-Phase (200-240V) Output Z3: 3-Phase … Continued
Single-Phase to 3-Phase Converters TCGC offers the following EMHEATER single-phase to 3-phase converter Variable Speed Drive models: G1: Single-Phase (200-240V) Input and 3-Phase (200-240V) Output G13: Single-Phase (200-240V) Input and 3-Phase (380-440V) Output TCGC offers the following EMHEATER single-phase to 3-phase converter Solar Drive … Continued
Solar Drives TCGC offers the following EMHEATER Solar Drive (for water pumps) models: Single-Phase SP1S: Solar DC 300-380V (or Single-Phase AC 200-240V) Input and Single-Phase (200-240V) AC Output Single-Phase to 3-Phase Converter SP1: Solar DC 300-380V (or Single-Phase AC … Continued
Soft Starters TCGC offers the following EMHEATER Soft Starter models: GW Series: Online – Bypass Contactor Optional GW3: 3-Phase (380-440V) Input and 3-Phase (380-440V) Output GW4: 3-Phase (440-480V) Input and 3-Phase (440-480V) Output GW6: 3-Phase (525-690V) Input and 3-Phase … 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 (200-240V) Input and 3-Phase (200-240V) Output G13: Single-Phase (200-240V) Input and 3-Phase (380-440V) … 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
How Do Servo Systems Work? Servo Systems includes four main components, a Servo Drive, a Servo Motor, a motion Controller, and a Feedback Device (usually referred to as an Encoder). Basically, a Servo Drive takes a command signal for position, … Continued
What are Servo Systems Used For? Servo Drives (as a component of complete Servo Systems) are generally used to control the speed, position, and torque of Servo Motors. These Servo Drives come in a variety of sizes (scaling to sizes … Continued
Benefits of Servo Systems The main advantage of a Servo System compared to traditional DC or AC motors is the addition of motor feedback. This feedback can be used to detect unwanted motion, or to ensure the accuracy of the commanded motion. … Continued
Servo Drives Explained A Servo Drive is a special electronic amplifier used to power electric motors. The main task of a Servo Drive is to monitor feedback and continually adjust for deviation from expected behaviour. A Servo Drive is thus … 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 Solar Drives Work? Solar Inverters All solar powered systems require a Solar Inverter to operate AC powered equipment and appliances. A Solar Inverter is a device that converts direct current (DC) generated by solar panels (or other alternative … 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
EMHEATER Business and Product Listing Platforms For EMHEATER business listings and adverts, please see the list of links to the various platforms below: OLX Variable Speed Drives Soft Starters Solar Drives (for Water Pumps) Servo Drives Single-Phase to 3-Phase Converters … Continued
EMHEATER Social Media Platforms Following are links to all the Social Media Platforms used by EMHEATER South Africa:
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
Soft Starter Industry Applications Soft Starters can be set up to the requirements of various individual applications. Compared to Variable Speed Drives (VSDs), Soft Starters require very few user adjustments while some Soft Starters also include a ‘learning’ process to … Continued
How do Soft Starters Work? Soft Starters are electrical devices connected between a power supply and an AC motor which regulates the amount of current fed to the motor (allow the motor to use a different start-up method). Soft Starters … 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 Soft Starter Soft Starters are also known as Reduced Voltage Soft Starters (RVSSs). A Soft Starter is a solid-state device used with AC Motors to temporarily reduce the starting current and torque during start-up (avoiding undue … 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
Advantages of using a Solar Drive (for Water Pumps) Solar Drives for surface and borehole pumps are ideal for use in South Africa which gets plenty of sunshine. Solar Drives for water pumps are a popular choice for converting an … Continued
The NAMPO Harvest Day, which has been bringing agriculture together for almost six decades, has sadly for the first time had to be cancelled by organisers Grain SA, due to the COVID-19 pandemic. The show was postponed to August 2020 … Continued
Solar Drives Explained Solar Drives (for water pumps) provides an energy efficient, environmentally friendly way to pump water for a variety of purposes (Irrigation of land, domestic/community water supply, fish farming, livestock, swimming pool, fountain, drip irrigation & sprinkler, industrial … Continued
Soft Starters Explained A Soft Starter is a device used with AC electrical motors to temporarily reduce the load and torque in the power-train and electric current surge of the motor during start-up. This reduces the mechanical stress on the … Continued
Die KragDag Ekspo wat jaarliks in Augustus gehou word (weens COVID-19 gaan dit in Desember wees hierdie jaar), is die hoogtepunt op die KragDag-kalender en bied ’n uitstalkas vir energie- en ander selfstandigheidsoplossings. Dit sluit ’n Opvoedkunde sub-ekspo, Entrepreneurskap en … Continued
The 2021 Africa Agri Tech Event Scheduled for 22 – 24 June 2021 Africa Agri Tech is the annual meeting point where the Southern African agricultural community gathers to explore the latest trends, scientific advances and technology solutions that will … Continued
New Event Dates The Solar Show Africa 2020 has been moved from 20-21 August to 4-5 November at the Sandton Convention Centre. https://www.terrapinn.com/exhibition/solar-show-africa/index.stm
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
EMHEATER Soft Starter Product Intro Video… Manufacturers of Variable Speed Drives, Soft Starters, Solar Drives and Servo Drives/Motors. For more information regarding Soft Starters, please refer to the following related blog posts: What is a Soft Starter? How do Soft … Continued
EMHEATER – Servo Drives EMHEATER Servo Drive Product Intro Video… Manufacturers of Variable Speed Drives, Soft Starters, Solar Drives and Servo Drives/Motors. For more information regarding Servo Systems, please refer to the following related blog posts: What is a Servo … Continued
