
L-MVE Soft Starter
< 1700A
2.3 - 13.8kV
Playing it Safe
L-MVE Series Soft Starters are a robust and advanced solution designed specifically for medium voltage applications requiring high levels of safety and reliability. Equipped with comprehensive motor and load protection, the L-MVE starter offers a user-friendly graphical interface and advanced safety features, making it ideal for heavy-duty industrial and government use. Its design includes enhanced interlocks, Arc Fault protection (AFL31.5kA/1s), and short-circuit protection up to 40kA/1s, providing extensive motor control and safeguarding capabilities in a single, compact panel. Available in both single or lineup configurations, the L-Series is a well-rounded choice for complex motor control requirements

Highlights
With models suitable for currents up to 1700A and voltages up to 13.8kV L-MVE starters have your motor control needs covered.
L-Series Panel Features
A | 2200 mm height for easier transportation |
B | Available in both stand-alone and line-up configuration |
C | IEC type tested |
D | Safe operation with separate galvanically isolated low voltage section via IBT technology |
E | Robust hinges and handles for convenient and safe closure |
F | Built-in locking on all compartment doors as standard |
G | Optional internal power factor correction including capacitor, vacuum contactor, fuses and inrush current limiter |
H | A range of switching options (vacuum contactor or vacuum circuit breaker) |
I | Corrosion resistant hot-dip galvanised steel sheets |
J | Front panel access with optional rear panel access available |
K | Top or bottom cable input and control wiring |
L | Maintenance friendly design |
M | Disconnecting switch viewing window for safer de-energising (back of enclosure) |
Fully type tested
AuCom L-Series panels are fully type tested according to IEC 62271-200:
- Short time withstand current
- Peak withstand current
- Internal arc fault (IAC Classification: AFL 31.5 kA for 1 second)
- Dielectric test on main auxiliary circuits
- IP rating
- Temperature rise tested to 50°C ambient temperature and main circuit resistance
L-Series Panel Specifications
- Rated voltage: 3.6 kV - 17.5 kV
- Rated busbar current: Up to 2000 A
- Rated short time withstand current/peak: Up to 40 kA for 1 second / 104 KA
- Internal arc fault IAC classification:
AFL 31.5 kA for 1 second - Partition classification: PM
- Loss of service continuity: LSC1/LSC2/LSC2B
- IP4X protection rating (IP54 optional)
- Altitude: < 1000 m [higher with derating]
- Ambient temperature: -10 °C -60 °C (above 50 °C with derating)
- Colour painting: RAL7035 (other colours optional)
MVE Soft Starter Features
Medium voltage installations are complex enough without making the starter hard to use as well. MVE is packed with features designed to make your life easier, including real-language feedback messages, so you don't have to look up codes to know what's happening.
Built-in monitoring and indicators, and extensive on-board input and output functionality reduce the need for space and avoid the cost of auxiliary equipment, while simplifying installation. Real-time graphs of motor operating performance and current quickly and clearly illustrate exactly how your motor is performing. No fuss, no trouble - a smoother start in every sense.
The MVE controller features simple, plain language feedback on the soft starter's operation and events - no need for trip code look-ups.

Feature | Benefit |
Quick Application Setup | Easy commissioning |
Dual Motor Set | Allows for two different starting and stopping motor data sets |
Starting and Stopping Options | A range of starting methods including current based torque control make the MVE soft starter suitable for all applications |
Simulation Mode | Fast and easy testing during installation and commissioning without the need for a mains supply or motor |
Real-time Performance Graph | Real-time graphs of motor performance and current quickly and clearly illustrate how your motor is performing |
Diagnostic Tool | Recorded waveforms can help diagnose conditions interfering with operation |
LV/MV Isolation via IBT Technology | AuCom IBT Interface Board Technology isolates the core starter control system and HMI from the MV power section, creating a safer work environment |
LV Motor Test | Conduct factory testing without the need for a medium voltage motor or supply |
Secondary Injection Testing | Allows full testing of motor protections via an external system such as Omicron |
Complete Motor Protection | A wide range of protection features including ground fault protection ensure that your equipment can operate safely even in the most demanding environments |
DOL+ Mode | Protects your motor even while operating in bypass mode |
Advanced Thermal Modelling | Intelligent thermal modelling allows the soft starter to dynamically calculate motor temperature and determine whether the motor can start successfully |
Protection Functionality
Description | Built-in Protection | Eq. ASI Code |
Maximum start time | Excess start time | 48 |
Too many starts | Restart delay and dynamic thermal model | 66 |
Undercurrent | Undercurrent | 37 |
Overcurrent - jam (Locked rotor, load increase) | Instantaneous/time-delay overcurrent | 50/51/51R |
Overcurrent - short (short circuit) | Instantaneous/time-delay overcurrent (stage 2) | 50/51 |
Checking or interlocking relay ` | Shorted SCR | 3 |
Thermal overload | Thermal overload - dynamic model | 49/51 |
Current imbalance | Current imbalance | 46 |
Undervoltage | Undervoltage | 27 |
Overvoltage | Overvoltage | 59 |
Phase loss | Phase loss | 47 |
Power loss | Power loss | 32 |
Ground fault | Ground fault | 50G |
Mains frequency | Frequency check, frequency variation | 81 |
External communications failure | Communications failure | 85 |
Internal communications failure | Internal failure | 85 |
Ext. fault 1/code-1 | Auxiliary trip A | 94/95 |
Ext. fault 2/code-2 | Auxiliary trip B | 94//95 |
Motor overtemperature | Thermistor protection* | 23 |
Stator winding overtemperature | Thermistor protection* | 49 |