Energy Class VI
5V 1A 5W AC DC Switching White Power Adapter
Compact wall plug converter with universal 100-240V input, optimized for telecommunication, IoT modules, and smart meters in Bandung tech parks.
Product DetailsFeatured Voltage Transformers & Power Conversion Units
Engineered for 50Hz/60Hz frequency stabilization, dual 220V/110V stepping, clean DC conversion, and wide fluctuation tolerance across Indonesian electrical grids.
Multi-Voltage
Universal 5V to 19V Switch DC Power Adaptor
Dynamic voltage regulation supporting 500mA to 3A load handling. Built with reinforced insulation against sudden grid line surges.
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Heavy Industrial
360W High Efficiency Industrial Switch Power Supply
Heavy-duty SMPS supplying 10A-50A continuous DC load. Excellent thermal dissipation for non-stop textile factory automation and CNC lines.
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LED Lighting
DC 12V 24V Step Down Lighting Transformer
Ultra-low ripple AC 110V/220V step-down transformer driver. Delivers clean 1A-8A for architecture, commercial displays, and hospitality fixtures.
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Automation
Enclosed AC-DC Switch Mode Power Supply
12V/24V/48V high-amperage (up to 50A) power unit with integrated over-current, over-voltage, and short-circuit protection for factory DIN-rails.
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Precision Output
12V 2000mA 24W Multi-Standard Power Adapter
Isolated flyback topology engineered with reinforced safety class margins. Reliable power for CCTV security, embedded electronics, and lab equipment.
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UPS Back-up
100W 14.6V 5A UPS Charge Function Power Supply
Smart battery-charging and line-monitoring switching unit. Automatic seamless cutover protecting critical industrial sensors during blackouts.
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High Power
AC 120V/220V to 48V DC Step Down Heavy Supply
Custom industrial power module rated 30A-50A. Built with premium silicon steel and ferrite magnetics to handle fluctuating input voltages smoothly.
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4.8/5.0
Verified Client Rating
100%
Hi-Pot Dielectric Tested
25+
Testing Stations & QC Gates
IEC
61558 & 62368 Compliant
Bandung Industrial Power Landscape: Voltage Stabilization & Machine Adaptation
Bandung and the wider West Java industrial zone (encompassing Cimahi, Padalarang, Rancaekek, and Majalaya) serve as the historic epicenter of Indonesia's textile, garment, precision casting, and research engineering clusters. Nevertheless, procurement engineers and plant directors across Greater Bandung regularly confront substantial grid voltage variations. While the Perusahaan Listrik Negara (PLN) utility network operates nominally at 220V single-phase / 380V three-phase at 50Hz, peak-load factory hours frequently see line sags dropping below 190V, alongside high-energy transients induced by heavy industrial motors and textile weaving looms.
Simultaneously, the modernization of Bandung's textile machinery and pharmaceutical packaging facilities relies heavily on precision equipment imported from Japan (operating on 100V or 200V 50/60Hz), the United States (requiring 115V or 460V), and Taiwan (220V/440V). Sourcing direct-fit Step Up and Step Down transformers from Shaanxi Zelqo Power bridges this international voltage rift. Our toroidal, EI-laminated, and high-frequency ferrite magnetic architectures ensure imported computerized jacquard looms, stenter frames, ultrasonic welders, and automated packaging lines run seamlessly without overheating, harmonic distortion, or premature capacitor breakdown.
Technical Insight for Local Buyers: Due to Bandung’s high-altitude tropical highland climate (approx. 700m to 900m above sea level with ambient relative humidity consistently oscillating between 70% and 90%), magnetic coils must be protected against dielectric tracking. Zelqo transformers feature vacuum pressure impregnated (VPI) class H insulation varnish and optional flame-retardant epoxy encapsulation to avoid moisture condensation traps.
In-House Manufacturing & Strict Testing Protocols
From virgin copper wire spooling and silicon steel winding to impulse breakdown testing, we control every manufacturing variable inside our Xi'an plant.
Local Deployment Scenarios Across Greater Bandung
Customized Step Up, Step Down, Toroidal, and Switch Mode magnetics purpose-engineered for Bandung’s core economic pillars.
Textile & Garment Machinery
Facilities across Cimahi, Rancaekek, and Majalaya rely on our low-frequency step-down isolation units (e.g., 380V-to-220V and 220V-to-110V) to feed sensitive microcomputer controllers on weaving, knitting, and dyeing lines, preventing motor stall from voltage dips.
High-Speed Rail & Transport Links
With the Whoosh High-Speed Railway connecting Jakarta and Tegalluar (Bandung), auxiliary signaling, passenger terminal CCTV, gate access controls, and LED lighting demand rugged 24V/48V DIN-rail SMPS with low thermal dissipation and zero mechanical hum.
Telecommunication & IT Hubs
Bandung's burgeoning tech incubator ecosystem and university research centers require ultra-clean, ripple-free 5V-19V power supplies and toroidal isolation transformers for audio testing, laboratory instrumentation, and edge servers.
Future Technical Trends in West Java's Power & Magnetic Equipment Sector
As Indonesia accelerates its "Making Indonesia 4.0" masterplan, manufacturing centers across Bandung are rapidly moving away from standard, unregulated analog autotransformers toward intelligent, high-efficiency power architectures. Three distinct trends dominate current technical procurement specifications:
1. Shift Toward Toroidal Core Architectures: Traditional grain-oriented silicon steel EI transformers exhibit significant acoustic humming and stray electromagnetic interference (EMI). Industrial plants in Bandung are aggressively transitioning to continuous wound-tape toroidal cores for step-up/down processes. Toroidal transformers offer up to 95% efficiency, emit minimal radiated flux, and offer up to a 50% physical volume reduction—vital for space-constrained machine control cabinets.
2. Adoption of Wide-Bandgap (GaN/SiC) Switching Topologies: High-frequency power adapters and industrial SMPS supplying automation networks are shifting to high-frequency ferrite architectures. By using specialized Mn-Zn and Ni-Zn core shapes (PQ, RM, EE), modern transformers achieve ultra-low core losses even under extreme 100kHz-500kHz switching frequencies, lowering factory electricity tariffs significantly.
3. Grid Resilience and Severe Tropical Climate Protection: Increased lightning frequency and wet seasons in Bandung demand heavy-duty varistor clamping, electrostatic shielding between primary and secondary windings, and Class H 180°C thermal ratings to resist long-term insulation breakdown.
Why Southeast Asian Importers Partner With Zelqo
Direct manufacturer credentials verified on-site by Intertek. Engineering depth built on over five years of dedicated custom export operations.
Intertek Audited Factory
No trading markups. On-site assessed production workshop in Xi'an featuring 25+ advanced test and winding stations for complete supply chain transparency.
Custom ODM/OEM Capability
From single prototype validation to container-load volume: custom primary/secondary voltages, multiple taps, thermal fuses, and copper/aluminum configurations.
100% Quality Inspection
LCR bridge measurement, DC low resistance, impulse winding surge testing, and full-load burn-in aging accompany every delivery before departure.
Direct Export Logistics
Seasoned containerized maritime freight direct to Tanjung Priok (Jakarta) with streamlined multimodal customs haulage directly to Bandung warehouse addresses.
Frequently Asked Questions by Bandung Engineers
Clear, engineer-to-engineer answers regarding importation, technical specs, customs clearance, and voltage matching in Indonesia.
How do I choose between an Autotransformer and an Isolation Transformer for my Bandung factory?
If your primary requirement is simple step-down (e.g., adapting 380V to 220V or 220V to 110V) for machinery where the electrical ground is shared and budget/cabinet space is tight, an Autotransformer is the most cost-effective choice. However, if your equipment contains sensitive microprocessors, CNC logic boards, or biomedical sensors vulnerable to common-mode electrical noise, or if you need complete galvanic isolation to protect operators from electric shock during line surges, a Galvanic Isolation Transformer with an electrostatic shield is strongly recommended.
Can your step-up and step-down transformers handle Bandung's PLN grid frequency (50Hz)?
Yes. While many US-imported machines are rated specifically for 60Hz, our transformers can be wound with extra magnetic core volume and precise turn ratios to operate cooler at 50Hz without core saturation. When operating 60Hz equipment on a 50Hz PLN Indonesian line, magnetic flux density increases by approximately 20%; we compensate for this during the custom winding engineering phase.
What documents do you provide for Indonesian customs clearance at Tanjung Priok Port?
We provide full export clearance packs including the Commercial Invoice, Packing List, Bill of Lading (B/L), Certificate of Origin (Form E under ACFTA for reduced or zero import tariffs), and factory test inspection certificates confirming IEC compliance.
How do you protect transformers and SMPS against Bandung's humid tropical weather?
Our transformers are treated with deep Vacuum Pressure Impregnation (VPI) using class H/F insulating varnish that locks out moisture, fungal spores, and dust. For damp or outdoor environments, we offer IP65-rated weather-resistant metal enclosures, polyurethane or epoxy potting, and moisture-sealed terminal blocks.
What technical data is required to request a formal quotation?
To provide an accurate design quote within 24 hours, our sales engineers need: Primary Input Voltage (e.g., 220V ±10%), Secondary Output Voltage (e.g., 110V), Total Power Capacity (kVA or Watts), Phase Type (Single or Three Phase), Frequency (50Hz/60Hz), Type of Core (EI Laminated or Toroidal), and any specific dimensional or enclosure restrictions.