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Dowei Electric
Dowei Electric MV Soft Starter VFS

Dowei Electric MV Soft Starter VFS

Product catalog summary

General Description:
The MV Soft Starter by Ningbo Dowei Electric Co., Ltd. complies with international standards such as IEC 62271, IEC 61800, IEEE 519, and NEMA. It is certified by ISO 9001, KEMA, CESI, CE, TUV, UL, and ASTA. The design includes seismic and structural considerations, suitable for high altitudes up to 5000m. It features Smooth Start Technology for flexible motor control.

Product Scope:
The soft starter supports a voltage range of 6-13.8kV with a power range of 4000kW-50000kW, depending on the model. It uses 24 to 42 SCRs and requires a control supply voltage of 110V or 220V AC/DC. It has an overload capacity of up to 500% of full-load current for 30 seconds.

Typical Specifications:
The device operates on a 3-phase AC voltage ranging from 2.3kV to 13.8kV and supports a power range of 100kW to 50000kW. It is designed for indoor use in non-explosive environments with an ambient temperature range of 0°C to 40°C. The altitude limit is 2000m.

Starting Data:
The start current is adjustable to less than 4 times the rated motor current, with a start time of 60 seconds. It can start up to 6 times per hour at 20°C.

Control and Communication:
The control supply voltage is 110V or 220V AC/DC. The power circuit can include 18 to 42 thyristors. Communication options include Modbus RTU, Profibus, and Ethernet, with an RS-485 interface. The device records up to 100 recent events and features a 3.5" LCD display.

Protection Parameters:
The soft starter includes various protection features such as over-current, under-current, over-voltage, under-voltage, motor short-circuit, motor locked-rotor, phase unbalance, load phase-loss, and power factor protection. Each protection type has specific alarm and trip settings with adjustable time ranges.

Catalog excerpts

Power Transmission & Distribution One stop equipments solution

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• ISO 9001, KEMA, CESI, CE, TUV, UL, ASTA • Seismic design, ETGI-1.020, IEEE Std 693, NCh2369 • Structural design, ASTM A325, ANSI/AISC 360, AWS D1.1 • High altitude correction per IEC 62271 & IEEE C37, ~ 5000m • Smooth Start Technology without Impact, Flexible Control of Motor Start/Stop Product Scope: • Rate voltage: 6-13.8kV (-15% to +10%) • Quantity of thyristors: 24 SCRs; 30 SCRs; 42 SCRs (model dependent) • Control supply voltage: 110V AC/DC or 220V AC/DC, 2000VA (customer supply) • Overload capacity: 400% full-load current of the motor / 60s 500% full-load current of the motor / 30s •...

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Starting Data Start current < 4 rated current of motor (adjustable) Start time Start times Control Control supply voltage 110V AC/DC or 220V AC/DC, 2000VA (customer supply) Power circuit 18 thyristors, 24 thyristors, 30 thyristors, 36 thyristors, 42 thyristors (model dependent) Communication protocol Modbus RTU, Profibus (option), Ethernet (option) Communication interface Event history It can display continuous recording 100 recent events of all kinds of action, such as start, stop, alarm, trip, external fault, etc. Natural cooling Ingress protection of enclosure Standards The MV Soft Starter...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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