HWAWAN HWA703V8D-2S-SS LED Display Common Cathode Power Supply

HWAWAN HWA703V8D-2S-SS LED Display Common Cathode Power Supply Description

The HWAWAN HWA703V8D-2S-SS is a compact, high-efficiency dual-output power supply engineered for common-cathode LED display modules. It provides two regulated outputs (typical factory-set +V1 ≈ 3.8V at up to 40A and +V2 ≈ 2.8V at up to 30A) in a small conduction-cooled package, designed for reliable operation across wide input voltages and harsh environmental conditions. Built-in protections (over-voltage, over-current, short-circuit, over-temperature) and broad regulatory compliance (UL, CE, CCC, FCC) make it suitable for professional LED display systems that require stable, high-current, low-voltage rails.

Product Features:
• Dual outputs optimized for common-cathode LED displays: +V1 (3.8V ± adjustable) up to 40A and +V2 (2.8V ± adjustable) up to 30A.
• High efficiency: up to 91% (efficiency curve referenced) with typical efficiency ~88% at 25°C, 230Vac, full load.
• Wide AC input: 90–264Vac, single-phase; power factor ≥ 0.95 at 230Vac, full load.
• Compact, lightweight construction: 185 × 55 × 26 mm, ≤450 g; designed for installation on recommended aluminum heat sink.
• Conduction cooling: requires mounting to a heat-dissipating plate (recommended 400 × 400 × 3 mm aluminum plate, center-mounted with thermal grease).
• Robust protections: output over-voltage protection (V1 hiccup, V2 latch-off), output over-current protection (hiccup behavior), long-term short-circuit endurance with auto-recovery, and over-temperature shutdown with auto-recovery.
• EMI/EMC stable: EN55032 Class A emission; meets IEC61000 immunities (ESD, EFT, surge, CS, RS) and harmonic/current flicker limits.
• Wide operating temperature: -40°C to +70°C (linear derating +50°C to +70°C at 1.25%/°C).
• Built to industrial reliability: MTBF ≥ 100,000 hours @ half load / 25°C; vibration and shock qualified; low leakage current <1 mA (240Vac/50Hz).
• Safety and compliance: UL, CE, CCC, FCC (per manufacturer claims).
• Installation notes: must be reliably grounded; observe high-voltage warning on AC input; do not operate during thunderstorms.

Protections:
• Over-voltage: +V1 hiccup (typical trip 4.5–5.5 V), +V2 latch-off (typical trip 3.1–3.8 V)
• Over-current: Hiccup modes (examples: +V1 60–90 A hiccup full load on +V2; +V2 40–75 A hiccup with 1A on +V1)
• Short-circuit: Long-term short-circuit endures; auto recovery
• Over-temperature: Shutdown at ≈85–100°C (surface center of cover); automatic recovery

Environmental & Mechanical:
• Operating temperature: −40°C to +70°C (full load −40 to +50°C; linear derate +50°C to +70°C at 1.25%/°C)
• Storage temperature: −40°C to +90°C
• Humidity: 5% to 95% RH non-condensing
• Altitude: 0–5000 m
• Acoustic noise: ≤ 45 dB(A) at 1 m
• Vibration & shock: Specified frequency/acceleration profiles; tested axes and durations per spec

EMC & Safety:
• EMI emission: EN55032 Class A
• Surge: IEC61000-4-5 (line-line 1 kV; line-PGND 2 kV)
• ESD: IEC61000-4-2 (contact ±4 kV; air ±8 kV)
• Conducted susceptibility: IEC61000-4-6
• Radiated susceptibility: IEC61000-4-3
• Harmonic current emission: IEC61000-3-2 Class A
• Insulation: Input-output 3000 Vac /1 min; Input-chassis 1800 Vac /1 min; Output-chassis 500 Vdc /1 min
• Grounding resistance: < 0.1 Ω (test 40 A/2 mins)
• Safety certifications: UL, CE, CCC, FCC (as declared)

Installation Notes & Warnings:
• The power supply must be mounted on a heat-dissipating aluminum plate (recommended 400 × 400 × 3 mm) at the center area; the surface must be smooth and coated with thermal grease for optimal heat transfer.
• Ensure reliable grounding before applying AC power; the product exhibits leakage current—the metal enclosure must be reliably earthed.
• High-voltage AC input terminal must not be touched during operation.
• Do not perform high-voltage operations in thunderstorms.
• This is a Class A product; it may cause radio interference in residential environments—users may need to apply countermeasures.

Dimensions and mounting holes – terminal coordinates:

HWAWAN HWA703V8D-2S-SS LED Display Common Cathode Power Supply Specification: