1–3.5 kW UV Lamp Driver Direct Replacement for Nedap 9985123 & 9931147

1–3.5 kW UV Lamp Driver Direct Replacement for Nedap 9985123 & 9931147 
Product Features:
1> Direct replacement for NEDAP 9985123 & 9931147
2> Constant Output Stability.
3> Superior Power Quality, Ultra‑high power factor and low total harmonic distortion.
4> High Efficiency & Reliability.
5> Perfect Mechanical Compatibility.
6> Full Industrial Control Interface

Product Details

Product Tags

Nedap 9985123 Lamp Driver 1-3.5KM MODBUS _6.5_5 Cost Effective Replacement.jpg

This 1-3.5KW Electronic UV Ballast is a high‑performance, single‑phase electronic UV lamp driver designed as a full direct replacement for Nedap 9985123 and 9931147. Engineered for industrial medium‑pressure UV systems, this driver delivers stable, constant‑power output for 1–3.5 kW UV lamps, ensuring reliable operation in water disinfection, advanced oxidation processes (AOP), UV curing, and industrial water treatment applications.

Built with industrial‑grade components and optimized circuit design, it maintains consistent UV output even under grid voltage fluctuations, extends UV lamp service life, reduces energy consumption, and supports seamless integration with PLC and SCADA systems. It provides a cost‑effective, plug‑and‑play upgrade and maintenance solution for Nedap‑based UV equipment.



Parameters for this Nedap Nedap 9985123 & 9931147 Replacement

       Start Mode       Instant Start

Operating Voltage Range

198-264

Max Input Power

3200W

Max Input Current

14A @ 230V 

Lamp Power

400W-3000W

Lamp Current

9A Max

Operating Frequency

40-70KHZ

Power Factor

≥ 0.99

 Efficiency

 >95%

Total Harmonic Distortion

<10%

Crest Factor

<1.7

Ambient Humidity

5%-85%

Ambient Temperature 

-15-40℃

Max Case Temperature

70℃

Case Material

Aluminum Shell

Safety Norm

EN61347-1-2-3, EN62493


Product Features of this UV Lamp Driver:

1–3.5 kW UV Lamp Driver Direct Replacement for Nedap 9985123 & 9931147.jpg

1> Perfect Compatibility & Direct Replacement

  • 1:1 electrical, mechanical, and control interface compatible with Nedap 9985123 & 9931147

  • Identical mounting dimensions and installation hole positions

  • No rewiring, no program modification, no mechanical adjustment – plug‑and‑play

  • Fully compatible with mainstream 1–3.5 kW medium‑pressure UV lamps

2>  Stable & Constant Power Output

  • Maintains stable lamp power during input voltage fluctuations

  • Ensures consistent UV intensity for reliable treatment performance

  • Insensitive to ±10% mains frequency changes

  • High overall efficiency up to ≥95%, low power loss

3>  Excellent Electrical Performance

  • Wide input voltage range: 198–264V, 220V/230V 50/60Hz

  • Ultra‑high power factor >0.99, low input current THD <15%

  • Max output current 9A, instant start for fast lamp ignition

  • Standby power <5.5W for energy saving

4> Intelligent Control & Monitoring

  • 1–4kHz PWM dimming: 400W to 3000W stepless adjustment

  • MODBUS communication for remote control and status monitoring

  • Complete I/O interface: start/stop, dimming, driver fault, system fault, lamp fault, lamp start feedback

  • Open‑collector fault signals for easy PLC integration

5> Robust Mechanical & Environmental Design

  • Aluminum alloy housing for superior heat dissipation

  • Compact structure for high‑density cabinet installation

  • Protection class: IP20

  • Operating temperature: −5°C to 40°C

  • Humidity range: 5%–85% RH (non‑condensing)

  • CE certified, industrial‑grade reliability



Dimension Wiring Diagram & Control Ports Indentification:

Dimension for Nepad 9985123 & 9931147 Replacement.png

Control ports definition.jpg


PinNameType

1Dimming Control1-4kHz,InputDuty Cycle Dimming
%pwm (0, <1V; 1, 24V)
2Driver FaultCollector Open CircuitOutputHigh level indicates a fault
3Start, StopHigh and low level (0, <1V; 1, 24V)InputHigh level to start, low level to stop
4System FaultCollector Open CircuitOutputHigh level indicates a fault
5Lamp Successful Start SignalCollector Open CircuitOutputLow level indicates successful start
6Lamp FaultCollector Open CircuitOutputHigh level indicates a fault
7Must be suspended


8Common Terminal (0V)



Installation & Safety Guidelines

  • Disconnect power before installation or replacement

  • Use flame‑retardant cable rated ≥600Vrms

  • Recommended wire cross‑section: 2.5–4 mm²

  • Maximum lamp cable length: 5 meters

  • Ensure correct input/output wiring orientation for optimal heat dissipation

  • Properly connect protective ground

Typical Applications

  • Municipal drinking water disinfection

  • Industrial and municipal wastewater treatment

  • Advanced oxidation processes (AOP) for micropollutant removal

  • Ultrapure water and process water disinfection

  • Aquaculture, swimming pool, and marine water treatment

  • Food and beverage, pharmaceutical, and electronics water systems

Core Advantages

  • Direct Replacement: Fully replaces Nedap 9985123 & 9931147 with zero modification

  • Stable UV Output: Constant power ensures consistent treatment effect

  • Energy Saving: High PF and high efficiency reduce operating costs

  • Longer Lamp Life: Optimized drive reduces lamp wear and extends service life

  • Intelligent Control: PWM dimming and MODBUS for smart system integration

  • Industrial Reliability: Rugged design, wide temperature range, CE certification


  • No previous
  • NEXT：6000W Ballast Water UV Lamp 6521A441-1200 for Leesgreen BWMS
    • Tags:      
    Leave Your Message
    Write your message here and send it to us

    Products categories

    Hit enter to search or ESC to close
    Leave Your Message
    Write your message here and send it to us