DirectConnect™ Medium Voltage Converter Systems
Low Maintenance
Rugged and durable design means intervention is rarely required.
Reduce Costs
Reduce installation costs and total cost of ownership compared to Low.
Proven Technology
Chromalox have been manufacturing and installing Medium Voltage technology for over 10 years.
Precise, dependable power control
for critical electric process heating
Your operations rely on consistent, accurate heating.
DirectConnect™ Converter Systems are designed to deliver exactly that, with technology built specifically for medium voltage electric heaters, and engineered to international safety standards.
You need power control you can depend on, and we've designed our converter systems to operate reliably, efficiently, and safely over the long term.
Designed for your process
Medium voltage heaters demand more than switching equipment. They require a system that can manage high‑energy loads safely, adjust power accurately, and integrate seamlessly with your process.
DirectConnect™ Converter Systems provide:
- Controlled, modulated power based on real‑time demand
- Protection for both equipment and personnel
- A fully engineered power path designed and manufactured by Chromalox for DirectConnect™ Medium Voltage heaters
- System monitoring and access to performance data through connection capability
- Compliance to IEC 62477, a specific standard for power converters used with electric heating
It's important to know, most alternatives use motor‑control assemblies built to IEC 62271. This is a standard not designed for electric heater power control. Our systems are specifically designed for, and are engineered in accordance with IEC 62477, helping you operate with greater confidence and clarity.
DirectConnect™ Converters
Chromalox DirectConnect™ systems bring a safe and reliable technical design for metal-sheathed electric process heating and power controls for heating systems operating at medium voltages (up to 7200 V). These patent-pending, DirectConnect™ medium voltage electric heating systems capture all the advantages of electric process heat while offering significant cost savings over low voltage, high amperage designs.
DirectConnect™ medium voltage electric systems slash installation and lifecycle costs while providing pollution-free operation for process heating. Aside from lower costs and clean operation, medium voltage electric heating offers advantages such as: lowered safety concerns (no open flames), stable electricity prices, minimal maintenance, and accurate temperature control.
Proactive moisture protection
Moisture inside heater elements is one of the most common causes of failure in medium voltage systems. Our converter system includes patented dry‑out logic that:
- Continuously monitors leakage current
- Identifies early signs of moisture
- Automatically initiates a controlled dry‑out sequence
This helps prevent damage before it occurs, reducing downtime and extending heater life.
Safety designed into every detail
Your teams work in environments where safety cannot be compromised. Our converter systems integrate:
- Arc‑resistant designs
- Optical arc‑flash detection
- Ultra‑Fast Earthing Switch (UFES) technology
- Kirk Key interlocks
- Fast‑acting fuse protection
- Ground‑fault interruption
These are all practical, real‑world measures that help protect people and equipment - designed with the careful attention to detail you expect from Chromalox.
Built-in protection and intelligence
DirectConnect™ converter systems integrate advanced monitoring and protection functions to ensure safe operation, reliable performance, and long-term asset protection in demanding environments.
- Electrical safety: Continuous monitoring of faults, supply conditions, and arc flash risks
Protects people and prevents electrical incidents before they escalate - Heater & process protection: Real-time detection of overheating, overcurrent, and load issues
Maintains stable process performance and prevents heater damage or downtime - Converter system health: Active monitoring of SCRs and cooling systems
Ensures reliable power control and extends system lifespan - Predictive diagnostics: Embedded monitoring of key system conditions and startup states
Identifies issues early, enabling proactive maintenance and reducing unplanned outages - Energy & performance insight capability: Visibility of power quality and system operation
Helps optimise efficiency and reduce operating costs - Operator visibility & control: Integrated interface for real-time monitoring and alarms
Gives operators confidence and faster response to changing conditions
Chromalox DirectConnect™ Medium Voltage Technology
DirectConnect™ brings together Chromalox’s medium-voltage expertise, application knowledge, and purpose-built converter technology to enable high-capacity electric heating with confidence.
Engineered specifically for process heating applications, each system integrates advanced control, protection, and monitoring functions to ensure safe operation, reliable performance, and long-term durability in demanding industrial environments.
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From high temperature gas heating to superheated steam and super-critical water processing, Chromalox is the leading partner for all process heating solutions.
