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ABB DSTX152 Transformer Unit 

1. Key Parameters

• Product Model: DSTX152
• Product Series: ABB AC500 Series Industrial Isolated Power Transformer Units (PLC Power Supply & Isolation)
• Core Function: Converts single-phase AC input to isolated 24V DC output for AC500 PLC peripherals; provides galvanic isolation between input and output circuits; supports 5A continuous output current (sufficient for 8–10 AC500 I/O modules); integrates overcurrent/overvoltage protection, EMI filtering, and thermal safeguards; enables DIN rail mounting; ensures stable, noise-free power supply for AC500-based automation systems
• Electrical & Power Specifications:

  Parameter	Details	Performance Metrics
  Power Conversion Ratings	- Input Voltage: 100V AC~240V AC (50/60Hz, wide-range auto-adaptation) - Output Voltage: 24V DC ±2% (regulated, load-independent) - Output Current: 5A continuous; 8A peak (10s, for startup inrush) - Power Rating: 120W (24V DC × 5A) - Isolation Voltage: 2.5kVrms (input-output, per IEC 61558-1) - Ripple & Noise: ≤50mVpp (24V DC output, at full load)	Wide-range AC input adapts to global power grids (110V AC/220V AC), eliminating regional variants; 2.5kVrms isolation prevents ground loops and protects AC500 modules from line voltage transients; ≤50mVpp ripple ensures noise-free power for sensitive sensors (e.g., 4-20mA pressure transducers)
  Protection & Safety Features	- Overcurrent Protection: 5A self-resetting PTC fuse (output side, auto-recovery) - Overvoltage Protection: 30V DC clamp (transient suppression diode) + 250V AC input surge protector (MOV) - Short-Circuit Protection: Current limiting (≤6A, hiccup mode) - Thermal Protection: 95℃ ±5℃ thermal shutdown (auto-recovery when cooled) - EMI Filtering: Built-in Class B EMC filter (input side, per EN 61000-6-3)	Self-resetting PTC fuses avoid manual replacement after temporary overloads (e.g., sensor inrush); 2.5kVrms isolation blocks line noise from reaching AC500 I/O modules; thermal shutdown prevents damage from cabinet overheating (common in dense PLC racks)

• Mechanical & Environmental Specifications:

  Parameter	Details	Performance Metrics
  Mechanical Design	- Dimensions: 125mm (W) × 100mm (H) × 65mm (D) - Mounting Type: DIN rail mount (EN 50022, 35mm, tool-less snap-on with anti-vibration latch) - Housing Material: Flame-retardant thermoplastic (UL 94 V0) + aluminum heat-dissipating base - Weight: Approximately 850g - Indicators: 1× input power LED (green = AC input present); 1× output power LED (green = 24V DC normal); 1× fault LED (red = overcurrent/overtemp)	Aluminum base enhances heat dissipation for 5A continuous output, avoiding thermal throttling; anti-vibration latch prevents dislodgment in high-motion environments (e.g., near conveyors); compact form factor fits in standard AC500 control cabinets
  Environmental Ratings	- Operating Temperature Range: -25℃~+70℃ (-13℉~158℉) - Storage Temperature Range: -40℃~+85℃ (-40℉~185℉) - Humidity Tolerance: 5%~95% RH (non-condensing/condensing, up to 55℃) - Vibration Resistance: 10~500Hz, 1.2g acceleration (IEC 60068-2-6) - Shock Resistance: 25g (11ms half-sine, IEC 60068-2-27) - EMC Compliance: EN 61000-6-2 (immunity: Level 3); EN 61000-6-3 (emission: Class B)	-25℃~+70℃ range suits unconditioned industrial spaces (e.g., factory floors, outdoor substation cabinets); condensing humidity tolerance eliminates dehumidifiers in damp areas (e.g., water treatment pump stations); Level 3 EMC immunity withstands noise from VFDs and motors

• Compliance Specifications:

  Parameter	Details	Performance Metrics
  Safety & Compliance	- Safety Standards: CE, UL 508, CSA C22.2 No.14, IEC 61558-1 (power transformers) - Flame Retardancy: Housing (UL 94 V0); internal wiring (UL 1015, 105℃) - RoHS Compliance: EU RoHS 2.0 (Restriction of Hazardous Substances) - EMC Standards: IEC 61000-6-2 (immunity), IEC 61000-6-3 (emission)	UL 508/CSA certification ensures compliance with North American industrial safety requirements; IEC 61558-1 compliance validates isolation safety; flame-retardant design reduces fire risk in dense PLC cabinets

2. Core Features

• Wide-Range AC Input (100V~240V AC): Auto-adapts to global power grids, eliminating the need for regional transformer variants—ideal for multi-site operations (e.g., a manufacturer with plants in Europe [230V AC] and North America [120V AC]); simplifies inventory management and global deployment.
• 2.5kVrms Galvanic Isolation: Isolates input line voltage from 24V DC output, preventing ground loops and blocking line-frequency noise (e.g., 50Hz/60Hz hum) from reaching AC500 I/O modules and sensitive sensors—critical for analog signal accuracy (e.g., 4-20mA temperature readings) in noisy industrial environments.
• 5A High-Current Output: Delivers 5A continuous 24V DC power, sufficient to supply 8–10 AC500 I/O modules (e.g., DSMB178 digital I/O, DSTK151V output modules) plus 15–20 low-power sensors (e.g., proximity switches)—eliminates the need for multiple small transformers, reducing cabinet clutter and wiring complexity.
• Comprehensive Fault Protection: Self-resetting PTC fuses + overvoltage clamping + thermal shutdown—covers all common power anomalies (overcurrent from shorted sensors, voltage spikes from grid transients, overheating from blocked airflow); auto-recovery features minimize downtime in 24/7 operations (e.g., chemical processing lines).
• Industrial-Grade Durability: UL 94 V0 housing + aluminum heat sink + -25℃~+70℃ operating range—withstands harsh industrial conditions (dust, moisture, temperature fluctuations) that damage consumer-grade transformers; 25g shock resistance survives accidental impacts during cabinet maintenance, extending service life to 10+ years.
• EMI Filtering for Clean Power: Built-in Class B EMC filter reduces conducted and radiated noise from the AC input—prevents transformer-generated noise from interfering with AC500 PLC communication (e.g., Profinet, Modbus) and ensures compliance with industrial EMC standards (EN 61000-6-3).
• Seamless AC500 Integration: Optimized for ABB AC500 PLC systems—output terminals align with AC500 I/O module power inputs; DIN rail mounting coordinates with AC500 racks and connection units (e.g., DSTC160, DSTD155); no external configuration needed, enabling plug-and-play deployment in AC500 automation networks.

3. Application Fields

• Manufacturing Automation: PLC Power Distribution:
  • Automotive Assembly Lines: Powers AC500 I/O modules and robotic peripherals—5A output supplies 8 DSMB178 digital I/O modules (controlling welding robots) + 15 proximity sensors; 2.5kVrms isolation blocks noise from welding inverters, avoiding false sensor triggers; wide AC input adapts to factory 230V AC grids.
  • Electronics SMT Factories: Supplies power to reflow oven control systems—24V DC output powers 6 AC500 analog I/O modules (monitoring oven temperatures) + 10 photoelectric sensors (PCB detection); ≤50mVpp ripple ensures stable analog temperature readings (±0.1℃), preventing soldering defects; thermal shutdown protects against cabinet heat buildup near ovens.
• Process Control: Hazardous Environment Power:
  • Chemical Plants: Powers AC500-based reagent dosing systems—5A output supplies 7 DSTD155 connection units (controlling dosing pumps) + 12 float switches (tank levels); 2.5kVrms isolation prevents ground loops between process equipment and PLCs; overvoltage protection withstands transients from chemical pump motors.
  • Oil Refineries: Supplies power to pipeline monitoring stations—24V DC output powers 5 AC500 remote I/O modules (monitoring flow/pressure) + 8 pressure transducers; -25℃~+70℃ range suits outdoor substation cabinets; EMI filtering resists noise from pipeline pumps, ensuring reliable data transmission.
• Energy & Utilities: Substation/Renewable Power:
  • Power Substations (220kV+): Powers AC500 auxiliary controls—5A output supplies 9 DSTX151 connection units (monitoring transformer cooling) + 14 temperature switches; 2.5kVrms isolation protects PLCs from high-voltage substation transients; wide AC input adapts to substation 110V AC/220V AC backup grids.
  • Solar PV Plants (1GW+): Supplies power to inverter auxiliary systems—24V DC output powers 8 AC500 digital I/O modules (controlling inverter cooling fans) + 16 current sensors (PV string monitoring); condensing humidity tolerance suits desert substation cabinets; EMI filtering resists noise from inverters, ensuring stable sensor data.
• Building Automation: Commercial HVAC Power:
  • Airports/Stadiums: Powers AC500-based HVAC zone controls—5A output supplies 10 DSTV110 connection units (controlling damper actuators) + 20 occupancy sensors; wide AC input adapts to building 120V AC/230V AC grids; flame-retardant housing meets commercial fire safety standards; DIN rail mounting fits in central electrical rooms.
  • Data Centers: Powers server room environmental controls—24V DC output supplies 7 AC500 I/O modules (monitoring rack temperatures) + 18 airflow sensors; low ripple (≤50mVpp) ensures stable sensor readings; thermal shutdown protects against data center cabinet overheating; EMI filtering avoids interference with server communication.

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