PRODUCT OVERVIEW
The Cooperheat 70kVA Heat Treatment Unit is a robust and high-capacity thermal control system engineered for precise and dependable industrial heat treatment operations. Integrating Cooperheat’s proprietary Advantage 3™ temperature programmer/controllers with a panel-mounted 12-point chart recorder, the unit delivers accurate temperature regulation alongside comprehensive process monitoring. Designed with more than 70 years of industry expertise, this heat treatment unit is tailored to address the practical and operational demands of modern heat treatment.
Product description
The Cooperheat 70kVA Heat Treatment Unit is developed to provide enhanced power capacity and advanced process control for complex industrial heat treatment applications. Combining high output performance with precise thermal management, the unit is ideal for large-scale operations such as post-weld heat treatment (PWHT), stress relieving, and controlled heating of heavy components and pipework.
At the heart of the system are Cooperheat’s Advantage 3™ temperature programmer/controllers, which maintain consistent temperature uniformity across each control zone. This ensures stable and repeatable heat treatment cycles, improving process accuracy and weld integrity. Complementing this control capability is a panel-mounted 12-point chart recorder that enables real-time temperature tracking and documentation, supporting quality assurance and compliance with industry standards.
Built on over 70 years of Cooperheat’s global leadership in heat treatment technology, the unit’s design emphasizes reliability, operational flexibility, and long service life. The layout and controls are engineered for ease of use, allowing operators to manage complex heat treatment tasks with confidence while minimizing setup time and maintenance effort.
The Cooperheat 70kVA Heat Treatment Unit offers a balanced combination of power, precision, and practicality. It delivers strong value for money through durable construction and efficient performance, while its versatile configuration supports a wide range of industrial heat treatment requirements.
Product specifications
Transformer core
- Three phase, forced air cooled, class H, 70kVA.
- Primary winding connected in Delta.
- Secondary winding connected in Star.
- Auxiliary winding: 110V a.c. 3.3kVA single phase.
Primary supply
- Primary voltage: 380V, 415V, 440V.
- Primary current: 106A, 97A, 92A.
- Frequency: 50/60 Hz.
Protection
- Three phase 125A circuit breaker with shunt trip.
- Three primary core winding over temperature thermostats. linked to circuit breaker shunt trip.
Secondary outputs
- Output: 32.5V – 0V – 32.5V (for 30V and 60V heating element operation).
- Auxiliary outputs: Two 110V, 10A, 50/60Hz output sockets.
- Number of temperature controlled output channels: 6 channels.
- Maximum load per output channel: 10.8kW (e.g. three 60V, 2.7kW heating elements).
- Maximum current per output channel: 180A.
Switching
- Six double pole, 180A, contractors with 110V a.c. coil.
Temperature control
- Temperature measurement, display and control.
- Degrees Fahrenheit or Degrees Centigrade.
- Start temperature.
- Temperature ramp up and down in degrees per hour.
- Hold/soak temperature set point and hold/soak time period setting.
Temperature recording
- Ambient temperature: Minus 0˚C to 50˚C.
- Humidity: 20% to 80% RH, non-condensing is required (temperature x humidity < 3200).
- Environmental protection: IEC IPSO (front door of panel mounted unit).
- Input points: 12 Points.
- Input thermocouple types: Thermocouple inputs – K.
- Reference range: Type K: -200˚C to 1370˚C (-326˚F to 249˚F).
- Printing system: Ink jet system, 6 colour.
- Chart Width: 180mm.
- Chart Length: Z fold 20m.
- Chart Speed: 5 to 300mm per hour.
Construction
- Case: 304 Stainless Steel case fitted with four 150mm nylon wheels.
Dimensions
- Weight: 355kg.
- Case Dimensions:
– Height: 1545mm;
– Width: 680mm;
– Depth: 665mm.
Product resources
Cooperheat Heat Treatment Equipment Catalog
Frequently asked questions
What distinguishes the Cooperheat 70kVA Heat Treatment Unit from lower-capacity models?
The Cooperheat 70kVA Heat Treatment Unit provides higher power output and enhanced capability for large-scale or heavy-duty heat treatment tasks. Its combination of Advantage 3™ temperature programmer/controllers and a 12-point chart recorder enables precise control and detailed monitoring for more demanding industrial applications.
How does the chart recorder enhance heat treatment process control?
The integrated 12-point chart recorder continuously logs temperature data from multiple channels during the heat treatment cycle. This allows engineers to verify temperature profiles, maintain documentation for quality assurance, and ensure compliance with strict industry heat treatment standards.
What types of applications is the Cooperheat 70kVA Heat Treatment Unit best suited for?
This unit is well suited for high-capacity industrial heat treatment processes such as post-weld heat treatment, stress relieving of heavy components, and controlled heating of large pipework or vessels where precise temperature uniformity and reliable power output are critical.
Why is long-term reliability a key advantage of the Cooperheat 70kVA Heat Treatment Unit?
The unit is designed using over 70 years of Cooperheat’s experience as a market leader in heat treatment technology. This heritage ensures a robust build, dependable performance, and a user-focused design that simplifies operation, enhances safety, and supports long-term industrial use.