ASR WIFI Intelligent Three-Phase Static Contactless Voltage Regulator

Why choose the ASR Series? Fast & precise: DSP control zero-crossing SCR triggers give a 10 ms response and about 100 ms stabilization. Very efficient: Overall efficiency ≥98.5%, so less energy loss and heat. Smooth, contactless control: No carbon brushes or moving parts — long life and low maintenance. Safe & reliable: Multiple protection layers (over/under voltage, phase loss, overcurrent, automatic/manual bypass). Smart interface & communications: 7″ multilingual touchscreen, data logging, historical fault query and RS485/RS232/SNMP for remote supervision. Three-phase auto balance: Automatically balances heavily unbalanced loads (works up to 100% unbalance). Main features Intelligent microcomputer (MCU) DSP metering control. Thyristor (SCR) contactless switching with current zero-crossing trigger. Step-by-step superposition switching compensation — smooth, surge-free. Isolation transformer SCR module design for surge reduction and high transient overload capacity. 7-inch multilingual LCD touchscreen with graphs and historical fault logs. Communication: RS485 (default), RS232 and SNMP (optional). Forced fan cooling; indoor installation. Automatic and manual bypass with uninterrupted transfer option. Password protected UI (two levels). Fast fault diagnosis and configurable protection settings. Key technical specs (model example) Item Specification Model (example) ASR-1000 KVA Input 3Φ4W PE, AC 380V ±20% Output (rated) 3Φ4W PE, AC 380V / 220V Output setting range 400V ±3% Voltage regulation accuracy ±1–5% (factory typical ±3V phase mean) Rated current 1443 A Response speed 10 ms Stabilization time ≈100 ms Overall efficiency ≥98.5% Waveform distortion No additional (static) Three-phase imbalance Automatic balancing (up to 100% unbalanced) Protection O/V, U/V, overcurrent, overload (inverse time), phase loss, optional phase sequence, fuse alarm Cooling Forced fan cooling Display / HMI 7″ multilingual touchscreen, voltage/current curves, fault logs Comms RS485 (default), RS232, SNMP (optional) Insulation resistance Main circuit to ground ≥ 2.0 MΩ Dielectric strength Main circuit to ground 50 Hz / 2000 V / 1 min (no breakdown) Dimensions (ref) 1600 × 1300 × 1900 mm Weight (ref) ~2100 kg Warranty & Service 1 year warranty; after-sales reply within 48 hours Note: dimensions, weight and wiring differ by model. The ASR series is customizable — contact Zhengxi for model drawings and exact data for your configuration. Protection & safety details Output overvoltage: protection triggers when output phase voltage exceeds 10% (adjustable). Output undervoltage: protection when output phase voltage is lower than 12% (settable). Overload / overcurrent: electronic detection 100%–200% with inverse time protection (600s to 2s); instantaneous trip for ≥300% (≤100 ms). Fuse alarm and clear alarm display on the touchscreen. Phase loss / imbalance and (optional) phase sequence protection. Automatic bypass on severe fault (configurable) and manual bypass for maintenance — transfer can be uninterrupted. Operation & human-machine interface Switch between Voltage Stabilization Mode and Mains Power Mode. Intuitive control via 7″ touchscreen — set parameters, view live volt/current, show historical curves and faults. Two-level password protection for UI settings. Full true-RMS measurement and display for phase and line voltages and currents. Communications & monitoring RS485 (Modbus) standard for integration with building management systems. Optional RS232 and SNMP for network monitoring and remote alarm/reporting. Useful for remote sites, telecom, data centers, and any installation needing centralized monitoring. Standards, documentation & factory support Manufactured to meet YD/T1270-2003 and relevant industry standards (SBW/IMT 01-92, JB/T7620-94, Q/OADRI-94). Factory technical package includes: complete machine certificate, factory inspection report, product manual, and electrical schematic. Remote guidance for installation and commissioning provided. Free remote operation training available. Typical applications Industrial plants and workshops Telecom stations and data centers Hospitals and medical equipment rooms Railways, airports and transport hubs Hotels, schools and government buildings Oil fields and energy infrastructure Installation & maintenance Install indoors on a stable, vibration-free surface with adequate ventilation. Ensure qualified electrician carries out wiring and earthing. Check input/output on HMI during initial commissioning. Keep vents clean; inspect electrical connections periodically. For high-altitude installations, apply derating per table above. After-sales, warranty & customization Warranty: 1 year. After-sales: Response within 48 hours for technical support. Custom options: Phase-sequence, communications, enclosure, and control settings can be customized to suit site needs. Factory test & docs: Full test report and installation drawings provided before shipment. FAQ Q1: What’s the difference between a static (contactless) voltage regulator and a traditional compensated stabilizer? A: A static (contactless) regulator uses thyristors (SCRs) for fast, electronic switching — no moving parts — so it’s faster, quieter, more reliable and needs less maintenance than mechanical compensated stabilizers. Q2: Can the ASR handle very unbalanced loads? A: Yes. The ASR Series has automatic three-phase balancing and can handle severe imbalance (design supports up to 100% unbalanced conditions). Q3: How fast does the ASR respond to grid changes? A: Typical response speed is about 10 ms and stabilization around 100 ms, so it corrects voltage dips and spikes very quickly. Q4: Do you provide remote monitoring? A: Yes — RS485 is standard (Modbus), and RS232/SNMP are optional for integration with remote monitoring systems.