
MV Heater Control
≤ 10 MW
≤ 11 KV
Heating Systems Control
AuCom, with decades of experience in SCR-based solutions, now offers a high-performance medium voltage solid-state heater controller for systems up to 11 kV. This fully integrated control solution extends heater life, enabling the confident transition from fossil fuel to clean electric heating. Designed to meet key safety agency requirements, it also helps lower installation costs by eliminating the need for traditional step-down transformers—offering a space-efficient and reliable alternative. For companies looking to decarbonize their heating processes, AuCom’s solid-state heater controller delivers the performance, safety, and efficiency needed to make the change with confidence.

Highlights
- Up to 11kV
- Eliminates the need for costly step-down transformers typically required with lower voltage systems
- Operates at low current
allowing for up to 90%
reduction in cable costs - Based on an IEC Panel Design
- IP31/IP42
- Feeder Panel with Protection and Disconnect Option
- Delivers reliable and safe operation
- Integrates a full thermal system including
an electric heat exchanger, process controller and power system - Includes isolated low
voltage enclosure including
an HMI and PLC
- Up to 20 MW
- Delivers high-efficiency power > 99%
- Reduces overall size and weight of power controller solution
Features & Benefits
Advantages
- Replace fossil fuel heat solutions,
contribution to a carbon free production - Higher efficiency than tradition fossil heat systems to traditional heat exchanger
- Easier to install, easier to control,
easier to maintain - No risk of worker injury from hot oil,
explosions or vapours due to no
sedimentation, changing oil, leaks, gas or oil vapours - Emission free heating
- Oil, gas and chemical industry:
you don‘t have to burn what you
actually want to sell - Useable with Solar Electrical Energy
AuCom is well known in Oil & Gas
industry, Europe and MENA - Arc Flash resistant solution
(type approval) - Less space requirement,
innovative cooling concept - Own production of panels and
power stacks - Controller up to 11 kV / 10 MW
Technical Features
- Zero-cross SCR control for low electromagnetic interference
- Segregated low voltage compartment including HMI and PLC
- Fully protection functions for protection of Heater and SCRs
- Programmable metering
- Passcode protection
- Load element heater (anti-condensation)
- 99-event recorder
Load Protection Functions
- Over / Under voltage protection (ANSI 27/59)
- Undercurrent detection (ANSI 37)
- Current imbalance detection (ANSI 46)
- Residual ground fault detection (ANSI 51G)
- Alarm relay output available (ANSI 74)
- Thermal overload lockout (ANSI 86)
Configurations
- IEC Panel Design with multiple frame sizes
- Short circuit protection with fuses or Circuit breaker
- Safety Switches for disconnecting and earthing
- Cascading of ATL and controlled loads
- Degree of protection IP31 / IP42
- Line Contactor / Circuit Breaker
- Arc Flash Detection optional

Specifications
General
Current Range | 70 - 1700 A |
Supply
Mains Voltage (L1, L2, L3) | |
MVE-xxxx-V02 | 2.3 kV Phase-phase |
MVE-xxxx-V04 | 4.2 kV Phase-phase |
MVE-xxxx-V06 | 6.6 kV Phase-phase |
MVE-xxxx-V11 | 10/11 kV Phase-phase |
MVE-xxxx-V13 | 13.2-13.8 kV Phase-phase |
Control Voltage (A1, A2, A3) | 85 ~ 264 VAC or 90 ~ 350 VDC* |
Rated Frequency | 50/60 Hz |
Rated lightning impulse withstand voltage (Up) | |
2.3 - 6.6 kV
|
60 kV |
10/11 kV
|
75 kV |
13.2/13.8 kV
|
95 KV |
Rated short-time withstand current (symmetrical RMS) (lk) | 50 kA** |
Short Circuit Capability
Current Range | 24 A ~ 1250 A (nominal) |
Motor connection | In-line or inside delta |
Bypass | Integrated internal |
ANSI Protection Codes
Code | Description | Built-in Protection |
48 | Maximum start time | Excess start time |
66 | Too many starts | Restart delay and dynamic thermal model |
37 | Undercurrent | Undercurrent |
51L | Load Increase (alarm) | High current frequency output |
51R | Overcurrent - jam | Excess start time, electronic shearpin |
50 | Overcurrent - short | Shorted SCR, electronic shearpin |
49/51 | Thermal overload | Thermal overload - dynamic model |
46 | Current imbalance | Current imbalance |
27 | Undervoltage | Undervoltage |
59 | Overvoltage | Overvoltage |
47 | Phase loss | Phase loss |
47 | Phase sequence | Phase sequence |
50G | Ground fault | Ground fault |
85 | Communications failure | Communications failure |
85 | Internal failure | Internal failure |
94/95 |
Ext. fault 1/code-1 |
Auxiliary trip A |
Ext. fault 1/code-2 |
Auxiliary trip B | |
23 |
Motor overtemperature |
Thermistor protection* |
49 |
Stator winding overtemperature |
Thermistor protection* |
32 |
Under power |
Power Loss |
Inputs on Controller
Start (C23, C24) | 24 VDC, 8 mA approx |
Stop (C31, C32) | 24 VDC, 8 mA approx |
Reset (C41, C42) | 24 VDC, 8 mA approx |
Input A (C53, C54) | 24 VDC, 8 mA approx |
Input B (C63, C64) | 24 VDC, 8 mA approx |
Motor thermistor (B4, B5) | Trip point > 2.4 kΩ |
Outputs
Rating of output relays on Controller | 10 A @ 250 VAC resistive |
6 A @ 250 VAC 15 p.f. 0.3 | |
10 A @ 30 VDC resistive | |
Outputs | |
Relay output A (41, 43, 44) | Normally Open |
Output Relay B (51, 52, 54)
|
Changeover |
Output Relay C (61, 62, 64) | Changeover |
Analog output (B10, B11)
|
0-20 mA or 4-20 mA |
Environmental
Degree of Protection | |
Power Assembly | IP00 |
Controller | IP54 / NEM12 |
Operating Temperature | |
Humidity
|
5% to 95% Relative Humidity |
Storage Temperature | -25 °C to +70 °C |
Humidity
|
5% to 95% Relative Humidity |
Operating Altitude | 1000 m ASL, higher with derating |
Pollution Degree | IP00 |
Vibration | Designed to IEC 60068 |
Equipment Class (EMC) | Class A |
EMC Emission | IEC 60947-4-2 |
EMC Immunity | IEC 60947-4-2 |
Certification
CCC | GB 14048.6 |
CE | EN 60947-4-2 |
C-UL | C22.2 No. 60947-4-2 |
UL | 60947-4-2 |
Marine | |
Lloyds | Lloyds Marine No 1 Specification |
ABS | Steel Vessel Rules 2010 |
RCM |
IEC 60947-4-2
|