Dydac Controls

Mayur Vihar, Delhi

We are offering Three Phase With Neutral Thyristor Power Controllers to our customers across the world. As a renowned Manufacturer, Exporter & Supplier from Delhi, India, we are committed in ensuring customers obtain a quality assured product. Hence, our quality auditors check the Thyristor Power Controllers on stringent quality parameters before approving for delivery.

Features :

• Soft start – bake out feature prevents moisture at start up
• Current Limit , Phase Loss Trip, Over temperature Trip
• Microprocessor Digital Programmable Thyristor Power Controller with Percentage
• Display. Program setting of Current Limit, Soft start etc by front keys

Ratings : Three Phase Star with Neutral - 35, 50, 70, 90, 150, 200, 250, 300, 350, 400 Amperes .

Dydac Controls Thyristor SCR Power Controllers some typical applications :

• Large tank heating and mechanical relay replacement.
• Thermoforming, textiles, industrial furnaces and ovens, extruders, kilns, chemical process heating, fast water heat.
• Paper and pulp drying, packaging machines, pharmaceutical processes, infrared ovens and dryers.
• High-temperature ovens and furnaces, kilns, glass, ceramics & hightemperature alloys.
• High-speed paper and ink dryers, high temperature IR heating, high temperature materials processing.
• Primary of transformer-coupled loads.
• Phase angle proportional control. No temperature or power cycling
• I2T Rectifier fuses standard
• Isolated SCR's
• Integrated thermal/mechanical design saves panel space
• Voltage protection - MOV capacitance
• 10 to 400 Ampere current ratings. Other Ratings Over 400 Amps Possible.
• Easy to install, test, service
• The Dydac Thyristor Power Controller is a heavy duty, fully Digital or Analog three phase power control unit for controlling the voltage applied to loads such as heating elements, thus, allowing temperature control while eliminating contactor switching and over/under heating. The first in a series of Digital or Analog Thyristor ( SCR ) Power Controllers incorporating protection functions.

Built in switching methods are : Phase Control Firing

Advantages at a glance:

• Fully digital Thyristor
• Analog Thyristor
• Phase Control and Zero Crossing
• Current - 15 – 400 A (consult us when higher ratings are needed)
• Voltage - 230- 500 V 50/60Hz
• Cooling Method - Forced air
• Ambient. Temp - 0 - 50°C
• Continuous Duty
• One, Two or Three controlled phases
• C.T.'s
• Input, 4-20mA or 0-20mA, 0-10VDC
• Digital display

Range : 15 A - 400 A , 220-1200V

LEDs :

• PLT
• Over Current
• Over Temperature
• Alarm
• Trip

Connection types : Three Phase Star with Neutral

Protection functions :

• Under & Over current
• Phase loss * Shorted SCR
• Heat sink over temperature Trip & Alarm
• Internal failure
• The SCR control can deliver electrical power to heaters in several ways: phase angle fired, zero voltage switched and on/off control.

Buyers can get in touch with us for obtaining the Three Phase Without Neutral Thyristor Power Controllers at nominal rates. Our Power Controllers are widely demanded in various industries across the world. We are an illustrious Manufacturer, Exporter & Supplier from Delhi, India and are capable of delivering Three Phase Without Neutral Thyristor Power Controllers within the promised time.

Features :

• Soft start – bake out feature prevents moisture at start up
• Current Limit , Phase Loss Trip, Over temperature Trip
• Microprocessor Digital Programmable Thyristor Power Controller with Percentage
• Display. Program setting of Current Limit, Soft start etc by front keys

Ratings :

• Single Phase – 25 , 34, 59, 70, 90, 150, 200 , 250, 300 Amperes
• Double Phase – 25 , 34, 59, 70, 90, 150, 200 , 250, 300 Amperes
• Three Phase Star/Delta- 35, 50, 70, 90, 150, 200, 250, 300, 350, 400 Ampers
• Three Phase Star with Neutral - 35, 50, 70, 90, 150, 200, 250, 300, 350, 400 Amperes .

Dydac Controls Thyristor SCR Power Controllers some typical applications :

• Large tank heating and mechanical relay replacement.
• Thermoforming, textiles, industrial furnaces and ovens, extruders, kilns, chemical process heating, fast water heat.
• Paper and pulp drying, packaging machines, pharmaceutical processes, infrared ovens and dryers.
• High-temperature ovens and furnaces, kilns, glass, ceramics & hightemperature alloys.
• High-speed paper and ink dryers, high temperature IR heating, high temperature materials processing.
• Primary of transformer-coupled loads.
• Phase angle proportional control. No temperature or power cycling
• I2T Rectifier fuses standard
• Isolated SCR's
• Integrated thermal/mechanical design saves panel space
• Voltage protection - MOV capacitance
• 10 to 400 Ampere current ratings. Other Ratings Over 400 Amps Possible.
• Easy to install, test, service
• The Dydac Thyristor Power Controller is a heavy duty, fully Digital or Analog one, two or three phase power control unit for controlling the voltage applied to loads such as heating elements, thus, allowing temperature control while eliminating contactor switching and over/under heating.
• The first in a series of Digital or Analog Thyristor ( SCR ) Power Controllers incorporating protection functions.

Built in switching methods are :

• Phase Control Firing
• Zero Crossing Firing

Range : 15 A - 400 A , 220-1200V

Advantages at a glance :

• Fully digital Thyristor
• Analog Thyristor
• Phase Control and Zero Crossing
• Current: 15 – 400 A (consult us when higher ratings are needed)
• Voltage: 230- 500 V 50/60Hz
• Cooling Method: Forced air
• Ambient. Temp: 0 - 50°C
• Continuous Duty
• One, Two or Three controlled phases
• C.T.'s
• Input, 4-20mA or 0-20mA, 0-10VDC
• Digital display

LEDs :

• PLT
• Over Current
• Over Temperature
• Alarm
• Trip

Connection types :

• Single Phase
• Double Phase
• Three Phase Star or Delta Connection
• Three Phase Star with Neutral

Protection functions :

• Under & Over current
• Phase loss * Shorted SCR
• Heat sink over temperature Trip & Alarm
• Internal failure
• The SCR control can deliver electrical power to heaters in several ways - phase angle
• fired, zero voltage switched and on/off control.

Power Calculation : When selecting the correct sized SCR power controller, rate the SCR for at least 110% of the heater load. Heaters and power lines have tolerances that can swing on any given day or location.

Single Phase :

• Watts÷ Volts÷1.73 = Amps - Example: 18, 000W ÷ 415V÷1.73 = 75A
• Amps X Volts÷1.73 = Watts

Phase Angle Fired : These controls proportionally turn on a percentage of each power line half cycle. This gives smooth, infinitely variable application of power to the heaters. Imagine a light dimmer and how it provides power to a light bulb. This method will provide the most precise control of heaters. Phase angle fired SCR’s will respond the fastest to load change and provide maximum heater life. It is the most precise method of control. Phase angle firing can increase heater life up to seven times depending on heater type. Phase angle firing also allows options such as soft start, voltage limit and current limit. These options are not available with any other means of control.Equipment manufacturers and maintenance engineers need a reliable, flexible approach to controlling electric-heating processes in today’s competitive, cost-conscious, industrial environment. And making the right choices up front is vitally important. Let us help you Understand SCR Power Controls , compare Power Control Methods to make the right selection, and determine the type of Electrical enclosure you need.

Understanding SCR Power Controls : When selecting SCR Power Controls it is important to have a basic understanding of how SCRs work. This will help you select the right SCR for your application.

How SCR Power Controls Work : A silicon controlled rectifier (SCR) is a solid state switching device which can provide fast, infinitely variable proportional control of electric power. Not only does this give maximum control of your heat process, but it can extend heater life many times over other control methods. Since the SCR is solid state, it can cycle on and off over a billion times, if properly used.

The advantages of SCR Controls over other temperature control methods :

• Improved response time.
• Closer process control.
• Extended heater life.
• Reduced maintenance costs.
• Silent operation. No arcing and sparking.
• Reduced peak power consumption.
• Remember, a heating element is made of wire in most cases. If you use a mechanical relay to turn on your heater, it will cycle on or off within 30 seconds or longer. The heater will expand and contract, getting more and more brittle each time. This is called thermal shock. Temperature overshoot may also occur. Relays also arc, spark and will burn out on a regular basis. Mercury displacement relays can cycle from 3-15 seconds. While it controls better than a mechanical contractor, overshoot and thermal shock will still occur. If cycled too fast, Mercury relays can overheat and explode causing Haz-Mat problems

Description :

• Comparing Different Methods of Power Control : There are several methods commonly used to control power to electric heaters. Although some may seem “cheap and easy, ” the total costs are not always considered.
• Mechanical Relays/ Contractors : The up front cost for a simple relay is low on low power levels. As the power level goes up, the price rises. Since the mechanical relays will get dirty, arc and burn out, the relay has to be replaced every so many cycles. The labor cost associated with this is often overlooked. Due to the slow cycle time inherent for mechanical relays (30 seconds minimum) control is poor, heated process may be damaged and heater life is shortened due to thermal shock.
• Mercury Displacement Relays : (MDR) The up front cost of a mercury displacement relay, or MDR, is low at low power. The MDR can cycle faster than a mechanical relay, and will not burn out as quickly. MDR’s do have to be mounted in one direction. However, the MDR will explode if overheated due to cycling too fast, or if overpowered. This results in a Haz-Mat problem. Control is still poor compared with solid state devices. The heater is still receiving full line voltage for several seconds at a time.
• Solid State Relays : (SSR) The costs of low power Solid State Relays (SSRs), is also low. However, there are several cost factors forgotten about with SSRs. Common to all solid state devices, they generate heat and have to have heat sinks. Also, SSRs generate more heat than SCRs due to their packaging, and come without lugs that make a solid electrical connection for higher power levels. The MOVs and fuses needed for protection against electrical shorts and spikes have to be customer installed. Again, this is a hidden cost. Finally, when looking at the SSR data, you must alwaysDerate the Device. Manufacturers of SSRs have derating curves published in their catalogs. However, please note that all SSRs are rated for the name plate power rating at 25ºC/77ºF ambient temperature. So a 50 Amp SSR is not good for 50 Amps if the temperature in the enclosure or work area is above 25ºC/77ºF (how hot is your facility in July?). The single surge current and voltage spike ratings are not as strong as an SCR. The SSR can cycle once a second and deliver better performance to both process and heaters than mechanical means. However, SSRs can only turn cycles on or off.
• Silicon Controlled Rectifiers : (SCR) The costs of Silicon Controlled Rectifier (SCR) Controls, is higher at low power, but level out with other methods at mid to high power. All Dydac SCRs come equipped with proper heat sinks, semi-conductor fuses and power lugs installed as an integrated package. With standard MOVs and DV/DT protection for line noise and voltage spikes, an SCR control can operate for decades. There is no routine maintenance to carry out. The level of control that can be achieved with a SCR is unattainable with any other devices. Phase angle firing and zero voltage switched control offers 0.08 second response times on 60Hz power lines. Heater life can be extended by 7 times. Power to heaters is infinitely variable. Soft Start, Current Limit and Voltage Limit Options give advantages for controlling heaters. Soft Start allows the use of high inrush heaters. Current Limit gives control of high temperature elements for furnaces. Voltage Limit prevents temperature overshoot and extends heater life. Peak power is reduced, saving operators utility costs.
• Protecting Your SCR Controls from Failure : Heat is the main enemy associated with SCR Control Failure. In fact, heat is the main enemy of all solid state devices. Almost all semiconductors, including transistors, IC/s and thyristors (SCRs and TRIACs) will be destroyed at an internal junction temperature of 125ºC. Diodes can take a higher internal junction temperature (130-200ºC). This is one reason Dydac Controls uses back to back SCR and SCR-Diode combinations whenever possible. Heat is generated by voltage drops across a power device (SCR/TRIAC). This drop can be anywhere between 1 and 2 volts depending on the device. The more current (amps) put through the device, the higher the watts the device will dissipate in the form of heat. This heat must be removed or the device will fail. All Dydac SCR Controls are designed to run at full rated amperage at 50ºC / 122ºF ambient.Remember, you will need air inlet and outlet holes with fan cooling. Finally, plastic enclosures act as an insulator. You will most likely destroy an SCR control if you install it inside a plastic box. The only reliable way to use a plastic enclosure is to have a “thru-hole mounting” style heat sink, with the heat sink’s cooling fans outside of the box.

Buyers can obtain our top notch AXIS E Series 1 Phase Power Controller at most nominal rates. We are making available AXIS E Series 1 Phase Power Controller to our buyers in both national and international markets.

Features :Soft start – Bake out feature prevents moisture at start up

Ratings :

• Single Phase – 30 ,   40, 60, 80, 100,   120 Amperes
• Input Control -  4- 20 mA DC, 0-10 V, Potentiometer

AXIS  Thyristor  SCR Power Controllers some typical applications :

• Large tank heating and mechanical relay replacement.
• Thermoforming, textiles, industrial furnaces and ovens, extruders, kilns, chemical process heating, fast water heat.
• Paper and pulp drying, packaging machines, pharmaceutical processes, infrared ovens and dryers.
• High-temperature ovens and furnaces, kilns, glass, ceramics & high-temperature alloys.
• High-speed paper and ink dryers, high temperature IR heating, high temperature materials processing.

AXIS  Thyristor  SCR Power Controllers some typical applications :

•  Phase angle proportional control. No temperature or power cycling
• I2T Rectifier fuses standard
• Isolated SCR's
• Integrated thermal/mechanical design saves panel space
• Voltage protection - MOV capacitance
• 30 to 120 Ampere current ratings.
• Easy to install, test, service

Application :

• Switching of Heater by Temperature Controller
• Heater applications in Furnace/Oven industry
• Plastic Processing Machinery, Injection Molding, Blow Molding and Extruder
• Solder Screen Printers, Solder Wave / Re-flow Machine        
• Solid and Liquid Packaging Equipments and Machinery
• Texturising Machinery
• Printing Machinery
• Controlling of Infrared Heaters.

We are well-reckoned as the Manufacturer, Exporter & Supplier of SCR Voltage Thyristor Power Controllers based in Delhi, India. Our Thyristor Power Controllers is noted for features such as durability, unmatched quality and reliable performance. Owing to our efficient logistics network, customers across the world can count on us for handling small or bulk orders of SCR Voltage Thyristor Power Controllers and ensuring their prompt delivery.

More about SCR Voltage Thyristor Power Controllers : TM isolation three-phase voltage regulating module sets three-phase potential detection, phase shifting circuit, trigger circuit and three groups of anti-parallel one-way SCR at an organic whole, need not external synchronous transformer, through 1-5VDC, 0-10VDC 4-20mA signal, automatic control or external potentiometer manual control to achieve change conduction Angle is implemented three-phase load voltage from 0 to grid whole voltage of adjustable sleeplessly, widely used in industrial furnace, electric oven, lamplight illume, transformer primary surge in equipment such as temperature adjustment, dimmer, voltage regulating control.

Main characteristic : Three-phase integration design, have power, control and fault indication, convenient installation, input and output terminal photoelectric isolation, built-in overheating protection function and the RC surge absorbing circuit, adjust the linear good strong anti-jamming capability, which can be directly and temperature is used together.

The Axis family of microprocessor based controllersc ombine a high degree of functionality and reliability at a very low price, in 4 different formats : 1/16 DIN, 1/8 DIN, 1/ 4 DIN.

They are ideal controllers for regulating temperature in a variety of applications, including :

Dryers.

Semiconductor packaging /testing.

Plastic processing.

Packaging machinery.

Painting and coating.

Climatic chambers.

The Axis family satisfies low cost basic control requirements and also provides advanced features such as motor position control, phase angle power control and Set-point programming

Dual displays and Bargraph. Programmer functionality.

Two 4 digits displays and one LED bargraph to display the PV and SP.

Easy to configure. Two different configuration levels provide easy access to parameters.

A 4-digit security code preventsunauthorized changes. Parameters can be hidden to the user to prevent misconfiguration of the unit.

Various Control algorithms.

PID or ON/OFF control.

Universal Power supply.

Operates on any line voltage from 85VAC TO 265VAC AT 50/60HZ.

1. Specifications

Standard spec.

Model LT 400- ES LT 600-ES LT 700 - ES LT 800 - ES LT 900 - ES

Dimension48X48mm96X48mm72X72mm48X96mm96X96mm

Supply voltageAC 85265VDC 1550V (Option)AC 85265V

Frequency50 / 60 HZ

Power

consumptionapprox

3VAapprox

4VAapprox

3VAapprox

4VAapprox

4VAapprox

4VA

Accuracy0.2 % FS 1digit

Sample time250ms

TCK , J , R , S , B , E , N , T , W5Re/W26Re , PLII , U , L

InputRTDPT100, JPT100, JPT50

RelaySPST typeSPDT typeSPST typeSPDT typeSPDT typeSPDT typeSPDT type

13A , 220V , electrical life:100, 000 times or more (under rated load)

Output

Voltage pulseFor SSR drive. ON : 12 V , OFF : 0V , max load current : 20mA

mA dc420mA, Maximum load resistance:560

Alarm 13A , 220V , electrical life:100, 000 times or more (under rated load)

Control algorithmPIDPIPDPON / OFF(P=0)

PID rangeP: 0.0 200.0 %I: 03600sD: 0900s

IsolationOutput terminals(control output , alarm , transmission) and input terminals are isolated separately

Isolated resistance10M or more between input and case (ground) at DC 500 V

10M or more between output and case (ground) at DC 500 V

Dielectric strength1000V AC for 1 minute between input terminal and case (ground)

1500V AC for 1 minute between output terminal and case (ground)

Operating Temp050

Humidity range2090%RH

Weight150g225g225g225g300g130g80g

Display HeightPV:7mmPV:7mmPV:14mmPV:7mmPV:14mm

SV:7mmSV:7mmSV:10mmSV:7mmSV:10mm

We are instrumental in offering Axis LT Series Digital Temperature PID Process Controller to our buyers throughout the world. We offer the PID Process Controller in various modes to cater to variegated demands of the customer. 

More about Axis LT Series Digital Temperature PID Process Controller : The Axis family of microprocessor based controllers combine a high degree of functionality and reliability at a very low price, in 4 different formats: 1/16 DIN, 1/8 DIN, 1/ 4 DIN.

They are ideal controllers for regulating temperature in a variety of applications, including:

• Dryers.
• Semiconductor packaging /testing.
• Plastic processing.
• Packaging machinery.
• Painting and coating.
• Climatic chambers.

The Axis family satisfies low cost basic control requirements and also provides advanced features such as motor position control, phase angle power control and Setpoint programming Dual displays and Bargraph. Programmer functionality.Two 4 digits displays and one LED bargraph to display the PV and SP.Easy to configure.  Two different configuration levels provide easy access to parameters.A 4-digit security code prevents unauthorized changes. Parameters can be hidden to the user to prevent misconfiguration of the unit. 

Various Control algorithms.

• PID or ON/OFF control.
• Heat/Cool Algorithm.
• Motor Position control.
• Single phase or 3 phase control.
• 2 programs available, each of 8 segments. Programs can be linked to form a single 16 segments program. Extended Alarm capability.
• Up to 3 different alarm outputs per instrument, 17 different alarm modes available.

Universal Power supply : Operates on any line voltage from 85Vac to 265Vac at 50/60Hz.

We are offering AXIS E Series 3 Phase Power Controller to customers all over the world. We check the Power Controller on stringent quality parameters before the final delivery to the buyer. 

Features :Soft start –   Bake out feature prevents moisture at start up

Ratings :

• Single Phase – 30 ,   40, 60, 80, 100,   120 Amperes
• Three Phase Star/Delta- 30, 50, 70, 90, 150, 200, 250, 300, 350, 400 Ampers
• Input Control - 4- 20 mA DC, 0-10 V, Potentiometer

Dydac Controls Thyristor  SCR Power Controllers some typical applications :

• Large tank heating and mechanical relay replacement.
• Thermoforming, textiles, industrial furnaces and ovens, extruders, kilns, chemical process heating, fast water heat.
• Paper and pulp drying, packaging machines, pharmaceutical processes, infrared ovens and dryers.
• High-temperature ovens and furnaces, kilns, glass, ceramics & high-temperature alloys.
• High-speed paper and ink dryers, high temperature IR heating, high temperature materials processing.
•  Phase angle proportional control. No temperature or power cycling
• I2T Rectifier fuses standard
• Isolated SCR's
• Integrated thermal/mechanical design saves panel space
• Voltage protection - MOV capacitance
• 30 to 400 Ampere current ratings.
• Easy to install, test, service

Application :

• Switching of Heater by Temperature Controller
• Heater applications in Furnace/Oven industry
• Plastic Processing Machinery, Injection Molding, Blow Molding and Extruder
• Solder Screen Printers, Solder Wave / Re-flow Machine        
• Solid and Liquid Packaging Equipments and Machinery
• Medical Equipments
• Texturising Machinery
• Printing Machinery
• Controlling of Infrared Heaters (Inductive Heaters) by Analog SSRs.

Our company is an esteemed Manufacturer, Exporter & Supplier of Single Phase Thyristor Power Controllers from Delhi, India. Our Power Controllers are fabricated by skilled professionals in adherence to norms set by industrial regulatory bodies. Customers can avail our range of Single Phase Thyristor Power Controllers at industry leading prices.

Features :

• Soft start – bake out feature prevents moisture at start up
• Current Limit , Phase Loss Trip, Over temperature Trip
• Microprocessor Digital Programmable Thyristor Power Controller with Percentage Display. Program setting of Current Limit, Soft start etc by front keys

Ratings : Single Phase – 25 , 34, 59, 70, 90, 150, 200 , 250, 300 Amperes

Dydac Controls Thyristor SCR Power Controllers some typical applications :

• Large tank heating and mechanical relay replacement.
• Thermoforming, textiles, industrial furnaces and ovens, extruders, kilns, chemical process heating, fast water heat.
• Paper and pulp drying, packaging machines, pharmaceutical processes, infrared ovens and dryers.
• High-temperature ovens and furnaces, kilns, glass, ceramics & high-temperature alloys.
• High-speed paper and ink dryers, high temperature IR heating, high temperature materials processing.
• Primary of transformer-coupled loads.
• Phase angle proportional control. No temperature or power cycling
• I2T Rectifier fuses standard
• Isolated SCR's
• Integrated thermal/mechanical design saves panel space
• Voltage protection - MOV capacitance
• 10 to 400 Ampere current ratings. Other Ratings Over 400 Amps Possible.
• Easy to install, test, service he Dydac Thyristor Power Controller is a heavy duty, fully Digital or Analog one phase power control unit for controlling the voltage applied to loads such as heating elements, thus, allowing temperature control while eliminating contactor switching and over/under heating. The first in a series of Digital or Analog Thyristor ( SCR ) Power Controllers incorporating protection functions.

Built in switching methods are :

• Phase Control Firing
• Zero Crossing Firing

Range : 15 A - 300 A , 220-1200V

Advantages at a glance :

• Fully digital Thyristor
• Analog Thyristor
• Phase Control and Zero Crossing
• Current - 15 – 300 A (consult us when higher ratings are needed)
• Voltage - 230 V 50/60Hz
• Cooling Method - Natural or Forced air
• Ambient. Temp - 0 - 50°C
• Continuous Duty
• One controlled phases
• C.T.'s
• Input, 4-20mA or 0-20mA, 0-10VDC
• Digital display

LEDs :

• PLT
• Over Current
• Over Temperature
• Alarm
• Trip

Connection types : Single Phase

Protection functions :

• Under & Over current
• Phase loss * Shorted SCR
• Heat sink over temperature Trip & Alarm
• Internal failure
• The SCR control can deliver electrical power to heaters in several ways: phase angle fired, zero voltage switched and on/off control.

Power Calculation : When selecting the correct sized SCR power controller, rate the SCR for at least 110% of the heater load. Heaters and power lines have tolerances that can swing on any given day or location.

Single Phase :

• Watts÷ Volts= Amps - Example: 18, 000W ÷ 240V = 75A
• Amps X Volts= Watts - Example: 60Ax 480V = 28, 800W

We are engaged in manufacturing, exporting & supplying of Double Phase Thyristor Power Controllers from Delhi, India. Our Thyristor Power Controllers is known for their durability, power consumption, and smooth operation. Buyers can rely on us for delivering small or bulk orders of Double Phase Thyristor Power Controllers within the postulated time.

Features :

• Soft start – bake out feature prevents moisture at start up
• Current Limit , Phase Loss Trip, Over temperature Trip
• Microprocessor Digital Programmable Thyristor Power Controller with Percentage Display.
• Program : Setting of Current Limit, Soft start etc by front keys

Dydac Controls Thyristor SCR Power Controllers A sample of some typical applications :

• Plastic Extruders , Plastic Injection Moulding machines
• Thermoforming, textiles, industrial furnaces and ovens, extruders, kilns, chemical process heating, fast water heat.
• Paper and pulp drying, packaging machines, pharmaceutical processes, infrared ovens and dryers.
• High-temperature ovens and furnaces, kilns, glass, ceramics & high-temperature alloys.
• Large tank heating and mechanical relay replacement.
• High-speed paper and ink dryers, high temperature IR heating, high temperature materials processing.
• Primary of transformer-coupled loads.
• Phase angle proportional control. No temperature or power cycling
• I2T Rectifier fuses standard
• Isolated SCR's
• Integrated thermal/mechanical design saves panel space
• Voltage protection - MOV capacitance
• 10 to 400 Ampere current ratings. Other Ratings Over 400 Amps Possible.
• Easy to install, test, service
• The Dydac Thyristor Power Controller is a heavy duty, fully Digital two phase power control unit for controlling the voltage applied to loads such as heating elements, thus, allowing temperature control while eliminating contactor switching and over/under heating. The first in a series of Digital ( SCR ) Power Controllers incorporating protection functions.

Built in switching methods are :

• Phase Control Firing
• Zero Crossing Firing

Advantages at a glance :

• Fully digital Thyristor
• Analog Thyristor
• Phase Control and Zero Crossing
• Current: 15 – 300 A (consult us when higher ratings are needed)
• Voltage: 230- 500 V 50/60Hz
• Cooling Method: Natural or Forced air
• Ambient. Temp: 0 - 50°C
• Continuous Duty
• Two controlled phases
• C.T.'s
• Input, 4-20mA or 0-20mA, 0-10VDC
• Digital display
• Control Input: Analog (4-20mA/0-20mA/1-5V/0-5V)
• Indicating of analog signal.
• Automatic Output-limit cognition of external volume or internal limit setting.
• Various alarm mode(over current, line failed, over temperature, load unbalance)
• Fault alarm output / Run output
• Programmable soft start.
• True RMS current display
• Auto/Manual mode operation is possible.
• Over current trip
• Output Current Limit Function
• Built-in watch timer
• Heat-sink temperature
• Load unbalanced level is programmable
• Compact size

LEDs :

• Over Current
• Over Temperature
• Alarm
• Trip

Protection functions :

• Under & Over current
• Shorted SCR
• Heat sink over temperature Trip & Alarm
• Internal failure
• The SCR control can deliver electrical power to heaters in several ways: phase angle fired, zero voltage switched and on/off control.

Double Phase:

• Watts÷ Volts= Amps - Example: 18, 000W ÷ 440V = 40.9 A
• Amps X Volts= Watts - Example: 40.9Ax 480V = 18, 000W
• Amps X Volts X 1.73 = Watts - Example: 60A x 480V x 1.73 = 49, 824W, Example: 18, 000W ÷ 240V = 75A

Specification :

• Ratings : Double Phase – 25 , 34, 59, 70, 90, 150, 200 , 250, 300 Amperes
• Range : 15 A - 400 A , 220-1200V
• Connection types : Double Phase
• Power Calculation : When selecting the correct sized SCR power controller, rate the SCR for at least 110% of the heater load. Heaters and power lines have tolerances that can swing on any given day or location.

Ideal for synthetic fibre, photographic films, etc., our another variety, that we deal in, is Melt Pressure Controllers. We are tagged as a prime Manufacturer, Exporter and Supplier of Melt Pressure Controllers based in Delhi, India. The offered product is made from the finest quality material and used to display pressure, temperature, etc. Offered at economical prices, our Melt Pressure Controllers have long lifespan and compact in size.

Details :

• Display pressure, temperature
• Optional second input/output for cost-effective single instrument
• View display information locally or remotely by optional Modbus RTU
• Bar graph display for quick-glance scaled value
• Two alarm relay output, third alarm optional
• Analog retransmission of process variable allows signal to be sent to other devices
• Configure locally or remotely by optional Modbus RTU
• Digital security code prevents unauthorized use
• IP65/NEMA 4X rated for harsh environments

Ideal For :

• Synthetic Fibres

• Photographic film
• Plastics - Solid extrusion
• Wire coating
• Multi-layer extrusion

Extrusion Melt Pressure Controllers :

• Melt pressure control
• Suitable for 4 or 6 wire transducers
• Pre-screen pressure monitor and alarm
• Pressure alarms
• Simple calibration
• Fieldbus communication options
• The Controllers are fully programmable melt pressure controller, suitable for precision pressure control in the plastic extrusion industries.
• In its basic format the Controller  standard hardware includes an input for melt pressure measurement, an analog output to drive the extruder screw and alarms to detect high and low pressure conditions. 
• Additionally, a second pressure input can be connected providing the facility to put a differential pressure alarm across the screen.  Automatic transducer calibration procedures and 5Vdc or 10Vdc transducer power supplies are provided for both inputs