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MEDIUM VOLTAGE SOFT STARTER, DIGITAL for MOTORS 30-2700A, 1500-15000V
		Download brochure : Brochure HRVS-DN (323 Ko) (En)

Medium Voltage Soft Starter & Integrated Motor Insulation Protection

Introduction

The HRVS-DN is a third generation, digital Medium Voltage, Soft Starter, designed for use with standard MV asynchronous and synchronous motors. This highly sophisticated soft starter ensures smooth, step-less acceleration and deceleration, eliminating high inrush current and damaging mechanical torque on startup and mechanical wear on stopping. The HRVS-DN is available as a stand-alone product or as part of a complete system including Line and/or Bypass Contactors. Additional options for medium voltage soft starter include Load Break Switch, Motor Protection Relay, Digital Multimeter, etc. 

We can customise our medium voltage soft starters to solve all of your inrush and starup problems.

Advantages at a Glance for the HRVS-DN Medium Voltage Soft Starter

Eliminates high inrush current and high mechanical torque on startup.

• Soft, stepless acceleration & deceleration.
• Unique starting & stopping characteristics.
• User friendly, straight forward set-up and operation.
• Sophisticated motor protection package.
• Heavy duty design: 50°C ambient temperature.
• Innovative low voltage test mode - full function-testing with a small L.V motor, using LV mains.
• Advanced Electronic Potential Transformer utilizing Patent Pending "wireless" fiber-optic controlled firing system.
• Each starter is tested for Partial Discharge (corona) to ensure long term reliability.
• Power factor capacitors can be connected directly to the upstream contactor.
• IP30-standard, higher protection by special order.
• Two optional methods of delivery: Chassis type for self assembly or Complete system
• RS485 Communication with MODBUS, PROFIBUS or MODBUS/TCP protocols (others available on request)
• Wide 45-65Hz Auto-tracking frequency range realized by special software with unique hardware arrangement.
  (designed for Marine, Offshore and Generators operating under continuous frequency fluctuation)
• Torque and current starting and stopping characteristics.
• Pump control software.
• Analog output option.
• Motor Insulation Protection option (with programmable alarm and trip levels via seperate additional output).

• Some of the approval bureau's we work with :  

  as well as :  BV, RINA

Medium Voltage Soft Starter Range: 2300-7200V, 30-2700A :

Exemples of complete integrated solutions :

Medium Voltage Soft Starter Range: 10000-13800V, 30-2700A 

Starting & Stopping

Soft start and soft stop

Current limit

Torque & Current Control ramps

Pump Control characteristics

Pulse (kick) start

Tacho/encoder feedback (option)

Dual Adjust - 2 start/stop characteristics for varying loads, two speed motors, etc.

Soft starting and stopping utilizing our world renown "Pump Control Program"- choose the most effective curve for acceleration, deceleration and adjust for final torque. 

Set-up & Supervision of a Medium Voltage Soft Starter Illuminated LCD with 2 lines, 16 characters each.                                Selectable languages: English, German, French or Spanish. The LCD displays motor current, fault description as well as statistical data. Easy set-up using six soft-touch keys to change preprogrammed default parameters. Eight LEDs for a quick status display:  Control voltage On & Self Test OK                                           Motor soft starting                                                           Motor running Motor soft stopping Motor stopped Test Mode Activated Dual Adjust mode Fault

Statistics

Last Starting Period

Last Start Maximum Current

Total Run Time

Number of Starts

Last Trip

Trip Current

Total Number of Trips

Historical Trip Event Recorder (10 Event conditions)

Control Inputs & Outputs for a Medium Voltage Soft Starter

Control voltage: 110-120, 220-240VAC / 50-60Hz or 110 - 220VDC to be specified at time of order.

Separate inputs for Start, Stop (Emergency) and Soft Stop.

Two programmable External fault inputs - will stop the motor 2 sec. after the contact closes

Aux. Contacts - three C/O relays, 8A, 250V, 2000VA (four C/O relays when Insulation option is used) :

1) Immediate Relay - changes position upon start signal, with adjustable On & Off delays.
Returns to original position upon Voltage Outage, Fault, Stop signal and Soft stop signal.
at the end of soft stopping process. It can also be configured as a "Shear-pin Alarm" contact.
2) End of Acceleration Relay - operates upon completion of starting process, with adjustable
On delay. Returns to original position upon Voltage outage, Fault, Stop and Soft Stop signals.
3) Fault Relay - can be programmed as:
     Fault - changes position upon Fault, returns to original position upon Reset.
     Fault-Fail-Safe - changes position upon control voltage connection, returns upon fault.

4) Insulation Alarm relay - changes position upon insulation detection at a pre-programmed level.

Typical Applications for a Medium Voltage Soft Starter
Fans and centrifuges Conveyors and monorail systems Pumps, Compressors and Chillers Starting large motors from weak power supply (diesel generators, long supply lines, etc.)
Marine & Offshore Applications for a Medium Voltage Soft Starter
Thrusters Cargo Pumps (LNG, LPG, etc.)   Water & Ballast pumps Refrigeration compressors Hydraulic pumps & power packs Main Propulsion (Variable Pitch Propellers)
	Northern Swan, soft starting 8 cargo pumps and 2 compressors. Courtesy: Woodside

Download brochure :

Brochure HRVS-DN
(323 Ko) (En)

Scope of supply

Chassis type or Cabinet (IP 30-54) or NEMA,with L.V. & M.V. segregated compartments.
Single or Multi-Motor Versions.

     Single : One Soft-Starter and One Motor

     Multi : One Soft-Starter and Two to Four Motors

HRVS-DN M.V. soft starter

Line & Bypass Vacuum Contactors

Low voltage control system

Download brochure :

Brochure HRVS-DN
(323 Ko) (En)