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Krones BSAB3000-480T-300C
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Big Daishowa BT50-LCZ56T-195
Big Daishowa BT50-LCZ56T-195

Krones BSAB3000-480T-300C

Product Brief Introduction

Air-cooled high-power dynamic braking resistor assembly custom-engineered for Krones beverage packaging line variable frequency drive systems; dissipates regenerative motor energy during conveyor deceleration and emergency stop operations.
Category:
Description

Technical Specifications

  1. Continuous Rated Dissipation Power: 3000 Watt
  2. Nominal Operating Voltage Rating: 480 VAC three-phase drive system matching
  3. Thermal Capacity Constant: 300 second peak overload energy absorption rating
  4. Resistance Element Per Phase: Balanced three-phase resistive load matrix
  5. Cooling Method: Forced air convection cooling via integrated axial cooling fan
  6. Over-Temperature Protection: Bi-metallic thermal cutout safety switch
  7. Enclosure Ingress Rating: IP20 cabinet grade metal housing
  8. Mounting Standard: Floor-standing vertical rack frame installation
  9. Maximum Surface Operating Temperature: 280°C resistive element surface peak

Functional Features

  • Balanced three-phase resistive load for symmetric regenerative energy dissipation
  • Integrated cooling fan interlock circuit; resistor power cut upon fan failure
  • Thermal bi-metal switch hard interlock with VFD drive enable circuit to prevent overheating burnout
  • Modular stacked resistive element design for uniform heat distribution
  • Terminal block phase separation to eliminate inter-phase short circuit risk

Structural Characteristics

  • Welded steel vertical rack frame housing with front protective perforated metal grille
  • Horizontal stacked resistive wire-wound elements with vertical air flow channels
  • Bottom-mounted axial cooling fan pushing upward forced cooling airflow through element stacks
  • Rear three-phase high-current terminal bus bar assembly
  • External mounting lugs for floor bolt-down anchoring against mechanical vibration

Material Composition

  • Main support frame: Hot-rolled carbon steel with anti-rust powder coating
  • Resistive heating element: Nickel-chromium alloy wire wound on ceramic insulating mandrels
  • Cooling fan housing: Die-cast aluminum alloy
  • Thermal safety switch: High temperature resistant ceramic encapsulated bi-metal assembly
  • Internal insulation barriers: High temperature mica sheet thermal insulation

Working Principle

During packaging conveyor deceleration, asynchronous motor operates in regenerative generator mode and feeds excess electrical energy back to connected variable frequency drive DC bus; BSAB3000-480T-300C resistor bank acts as controlled load to convert regenerative electrical energy into thermal energy via nickel-chromium resistive elements; integrated cooling fan circulates forced air through stacked elements to evacuate waste heat from enclosure; thermal cutout switch interrupts drive enable circuit if element surface temperature exceeds safety threshold, preventing resistor burnout and cabinet fire hazard; fan interlock disables resistor power dissipation upon cooling fan malfunction.

Advantage Highlights

  • 3000W continuous power rating matches high-speed beverage packaging line heavy conveyor loads
  • 300-second peak overload capacity accommodates frequent emergency stop cyclic operation
  • Balanced three-phase construction eliminates DC bus voltage unbalance during braking cycles
  • Integrated dual safety interlocks (fan fault + over-temperature) for unattended production line operation
  • Original Krones OEM design with direct plug-and-play wiring compatibility for standard bottling line VFD systems

Applicable Industries

Beverage bottling production lines, food packaging conveyance systems, glass container manufacturing transport equipment, plastic blow molding automation lines, canned food processing conveyor drives

Installation Requirements

  1. Bolt unit vertically to reinforced concrete production floor using four base mounting lugs
  2. Maintain minimum 50cm unobstructed clearance above unit top air exhaust grille
  3. Route three-phase power bus cables via rear terminal bus bar with specified 8 N·m bolt torque
  4. Wire thermal cutout and fan fault interlock contacts in series with main VFD safety enable circuit
  5. Install unit in well-ventilated production area free of accumulated plastic dust and paper debris

Usage Precautions

  • Do not block cooling fan intake or exhaust air grilles at any operating time
  • Conduct monthly inspection of thermal safety switch continuity during production downtime
  • Clear accumulated packaging dust from resistive element stacks quarterly with compressed dry air
  • Avoid positioning unit adjacent flammable packaging materials within 1.5m radius
  • Replace cooling fan immediately upon abnormal vibration or airflow reduction to prevent resistor overheating failure
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