The FCMA Soft starter achieves this through a unique system of flux compensated non saturated magnetic amplifier for controlling the motor current and hence. Frequently asked questions about FCMA soft starters. 1. What is the difference between an FCMA and conventional magnetic amplifier or saturable core reactor . Eltech Engineering provides complete starting solutions, slip ring, squirrel cage and synchronous motors, provides services to FCMA soft starters and any other.

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Soft starter wiring The soft starter has following wiring connections: A built-in bypass device closes to ensure full voltage running of the motor after starting, bypass operation can be time, current or speed based.

how a soft starter works?

Does soft starter suitable sft crane? FCMA soft starter are stepless voltage reducing starters which ensure a constant low starting current with incremental voltage and torque to the motor to achieve a continious and smooth acceleration of the drive. To summarize, Soft Starters can optimize the starting performance of motors and motor manufacture can concentrate on improving running performance to ensure lower life cycle costing.

The values of starting current can be adjusted at site and six such adjustments are provided. The Soft starters provide gradual increase in voltage up to rated voltage ensuring even acceleration.

I have talked to many users they are satisfied with FCMA technology as it requires nearly no spft I have never heard or seen this type of starter. Natural Side Soft Starters.

Neutral side connection Low fault level on neutral side, highly economical, easy retrofitting on existing installations, Can be located near the motor. Types of Soft Starters Various reduced voltage starting options have been available. Need serious technical arguments to convince the end customer for SCR soft aoft. Advantages Customized starting on limited power source, smooth starting and acceleration. This paper deals with innovative magnetic soft starters based on flux compensation technology FCMA.


ER and MC options are designed to reduce the line current down to 1.

FCMA Soft starter

The large pumps, in many water systems, are driven starte induction and synchronous motors. Fastest payback period Avoids fluid hammer Easy to install In built protection Designed for extreme operating conditions Programmable current and torque limits Programmable acceleration and deceleration ramps Two set point current limits Instantaneous protections The soft starting sequence A Soft starter normally operates in three distinct stages: As such, optimization is needed for reducing life cycle cost of the entire establishment in terms of capital cost, minimum downtime, and maximum availability.

As the motor speed increases the impedance of FCMA ssoft steplessly to keep the current constant and increase the motor torque so that the load is accelerated. No forced cooling required. The magnet is provided with a retentive core so that even in the event of control supply failure the magnet opens only after ssoft. JavaScript startrr disabled for your browser.

Soft starter setting Soft starter allows the output voltage decreases gradually to achieve soft stop, in order to protect the equipment. The softest start for your electrical motor, with a constant, stepless acceleration and without harmonics. It also assists in enhancing motor efficiency. Higher motor life due to reduced Mechanical and Electrical stresses, Capital cost saving in power systems. The motor current is kept constant due to the balancing effect of Cemf staryer.

They can boost current and voltage at start, but it’s a voltage boost to initiate movement if the motor bogs at start, after which the boost voltage An aggregate of approx.

An additional coil protection relay is provided for additional safety. Blogger integrates with Amazon Associates. Thursday, May 13, Blogger Buzz: This leads to large saving in Genset capacity and spft.

I talked with manufacturers and find FCMA technology very useful No special protections are required for soft starters. Why bunkering pump motor trip in the morning? This stafter to saving in transformer capacity and cost. Some features of this site may not work without it. Soft starters have no Hz regulation capabilities. So, that is why your soft starter is probably tripping.


Closed transition hence no momentary disconnection of supply. This is innovative technology for incremental motor voltage and torque at constant reduced current.

Innovative Electrosoft

The FCMA main winding is in series with the motor and drops a voltage across itself to limit the motor voltage and motor current. B] Transformer starting Considerations — Transformer p. Posted by Hitesh Vadnagare at 4: Low Voltage compensators are connected to the MC winding and this current is reflected by the ER winding into the line high voltage system. Unique FCMA technology, Low starting current, Amplitude control, Sinusoidal Waveform, Rugged magnetic design No harmonics, No maintenance, Suitable for extreme weather conditions, Built in bypass for full voltage, Run Indoor and outdoor models Line or neutral models available, Optional soft stop feature.

With the rugged FCMA technology this could be done without any electronic or moving parts. Such as the impact of the water pump, when the pump stops suddenly, the water flow The FCMA is connected in series with the motor either on the line or neutral side, so that the starting current is limited to a low value. These motors pose a problem of high starting currents leading to voltage dips, large thrust on pumps, and jerks on equipment affecting the life of the system adversely.

Thanks osft I will read his over the weekend, mag amps were big things some time ago, then came semiconductors. Hope you have ome more information on the subject. Collections Turbomachinery and Pump Symposia. Follow us on Twitter Youtube.