MVC 4
Medium voltage soft starter for AC motors up to 15 kV, combining a high-end motor protection relay with a solid-state starter for smooth, stepless acceleration and deceleration control.
Product Details
OVERVIEW
The MVC4 Medium Voltage Series Soft Starter is designed to start AC motors in any fixed speed application. It provides maximum protection with 'True Thermal Modeling,' while allowing smooth, stepless control of acceleration and deceleration.
Motor and starter protection is taken to a new level by combining a high-end motor protection relay with a heavy duty solid state starter.
Rated at 500% for 60 seconds, the MVC4 Series starter will never be the limiting factor in your application.
MVC 4
Medium voltage soft starter for AC motors up to 15 kV, combining a high-end motor protection relay with a solid-state starter for smooth, stepless acceleration and deceleration control.
Advanced Programming
Motor protection relay and ramp features configurable via keypad or laptop computer.
Fiber Optic Isolation
Low voltage compartment is fiber optically isolated, offering up to 110kV BIL rating for safety and reliability.
Built-in Control Power
Includes a built-in 120V control power transformer along with voltage and current metering.
Disconnect Switch
Load-break / fault-make rated disconnect switch with door safety interlocking.
Visible Grounding Bar
Provided for safe operation.
Motor Fuses
Coordinated motor fuses with blown fuse indicators.
Line Isolation Contactor
Line isolation vacuum contactor.
Bypass Contactor
Fully rated bypass contactor for increased thermal capacity and optional across-the-line starting.
SCR Stack Assemblies
Heavy duty SCR stack assemblies with ring transformer isolation for reliable SCR gate firing.
RTD Option
Accepts up to 12 RTD inputs.
Ground Fault Protection
Zero sequence ground fault protection available as an option.
Cable Entry/Exit
Top entry, bottom exit with room for stress cones.
Removable Entry Plates
Facilitates easy connections.
Enclosure Rating
NEMA 12 gasketed enclosure (NEMA 3R optional).
True Thermal Modeling
Monitors the motor for excessive thermal conditions from starting, running, and ambient factors.
Retentive Thermal Memory
Provides continuous overload protection even after a complete power loss.
MVC Plus Memory
Remembers the motor's last thermal state, tracks off time via real-time clock, and adjusts the model accordingly.
Non-Volatile Memory
Stores the thermal memory without the need for batteries.
True Time Thermal Tracking
Adjusts the thermal model based on motor temperature, running state, or power loss for accurate cooling rate modeling.
Dynamic Reset Response
Reset is only allowed after the motor has sufficient thermal capacity for a successful restart.
Thermal Model Biasing
Adjusts for heating effects from phase current imbalance or optional RTD inputs.
Flexible Setup
Allows the user to choose the level of overload protection.
Programmable Trip Classes
Selectable from NEMA/UL Classes 5 - 30.
Dual Mode Protection
Separate trip curves for start and run modes (e.g., Class 20 for start, Class 10 for run).
Warning Levels
Programmable and assignable to one of six built-in output relays.
Custom Trip Curve
Programmable based on the motor manufacturer's data.
Remote or Automatic Overload Reset
Can be activated for unattended operations.
SPECIFICATIONS
ELECTRICAL
5 SPECSINSULATION
8 SPECSENVIRONMENTAL
4 SPECSDIGITAL CONTROL UNIT (DCU)
2 SPECSAUXILIARY CONTACTS
3 SPECSPROGRAMMABLE FEATURES
8 SPECSMOTOR AND STARTER PROTECTION
1 SPECSTATISTICAL DATA
2 SPECSMETERING
1 SPECCOMMUNICATIONS
2 SPECSUse Cases
APPLICATIONS
Engineered for demanding environments across multiple industries and operating conditions.
DOCUMENTS
MVC4 Brochure
brochure
Coming soonWiring Diagram (Line Start)
manual
Coming soonWiring Diagram (Soft Start Only)
manual
Coming soonREQUEST A QUOTE
Contact Athena Control for pricing, availability, and technical support for the MVC 4.