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HRVS-DN Ex - MEDIUM VOLTAGE SOFT STARTER in explosion proof enclosure, for Explosion Proof Environments.

30-1800A, 1500-15000V, 30KW - 24000KW

Medium Voltage Soft Starter in EEx d[ia]I Explosion Proof enclosure

Sample Certificate for Medium voltage soft starter in an explosion proof certified enclosure

MV_soft_starter-Ex_certificate_BF

Introduction

Integrated into a uniquely certified explosion proof enclosure (see certificate above), the HRVS-DN Medium Voltage Soft Starter, is designed for use with standard MV asynchronous and synchronous motors. It eliminates high inrush current and damaging mechanical shock in mines, quarries and chemical plants. The HRVS-DN Ex is available as a stand-alone product or as part of a complete system including VCB's, Line and/or Bypass Contactors, etc.

Additional options for medium voltage soft starters include:

Load Break Switch

Fuses and fuse base

Motor Protection Relay

Digital Multi-meter, etc.

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Advantages at a Glance for HRVS-DN Ex

  • Eliminates high inrush current and high mechanical shock on startup.
  • Soft, stepless acceleration & deceleration with unique starting & stopping characteristics (Pump Control, Torque Control, Current Control).
  • Sophisticated motor protection package with user friendly set-up and operation.
  • 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.
  • Individual testing for Partial Discharge (corona) to ensure long term reliability.
  • Power factor capacitors can be connected directly to the upstream contactor.
  • EEx d[ia]I class explosion proof enironments certificatiion.
  • Chassis type for self assembly or Complete en closure with certifications
  • RS485 Communication with MODBUS, MODBUS/TCP, PROFIBUS or Device-Net protocols (others available on request)
  • Wide 45-65Hz Auto-tracking frequency range realized by special software with unique hardware arrangement. (designed for Generators operating under continuous frequency fluctuation)

On route to packaging

On route to packaging

Typical Explosion Proof Applications

  • Gaseus environments
  • LNG, LPG environmentsFans and centrifuges
  • Mining conveyors and monorail systems
  • Pumps, Compressors and Chillers
  • Starting large motors from weak power supply (diesel generators, long supply lines, etc.)

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The HRVS-DN medium Voltage Explosion Proof Soft Starter

on the assembly line, after testing, prior to delivery

Comprehensive Motor & Starter Protection
with Occurrence status table		 Active Status During:
Start Run Stop Soft Stop
Too many starts & Start Inhibit Time √
Electronic Overload with selectable curves ↔
Shear Pin (Jam)
Starter Protection - trip function at 850% FLC in less than 1 cycle √ √ √
Motor Protection - trip function
During Start-factory set at 850% FLA in less than 1 cycle √ √
During Run-adjustment 200-850% FLAwith adjustable delay √
Programmable setting
Starter Protection - trip function at 850% FLC √ √ √
Motor Protection - Alarm & Trip functions
On fault "Immediate Relay" acts as alarm w/adjustable delay.
Trip will not occur if fault is cleared within the time delay.
During Start - preset at 850% FLA with adjustable delay √ √
During Run - prog. 200-850% FLA with adjustable delay √
Under current √
Unbalance Current √ √ √
Ground Fault Current √
Phase loss √ √ √
Phase sequence √ √ √
Under voltage. Time delay is overridden in a "No-Volt" case √ √ √
Over voltage with adjustable time delay √ √ √
Under / Over Frequency when range exceeds "Auto Tracking" √ √ √
Long start time (Stall protection) √
Shorted SCR & Wrong connection(Load Loss) √ √
External fault 1 & 2 √ √ √ √
SCR protection by Metal Oxide Varistors (MOV) √ √ √ √
Starter over-temperature √ √ √ √
Starter internal test Passed
When supply voltage is connected and after the "On" LED is lit.		 √ √ √ √
Power ON & NO Start signal √
By-Pass contactor Open √
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