18+ Years
Power Conversion R&D
TÜV Rheinland
Onsite Verified Facility
CE Certified
Low Harmonic & EMC Spec
100% Burn-in
Full Load Aging Verification
Product Catalog
High-Reliability Industrial UPS & DC Power Systems
Engineered for continuous duty cycles, harmonic mitigation, and microsecond switchover times across industrial control, telecommunications, and field automation equipment.
Ultra-Slim Building Automation
HDR-30 30W DIN Rail Power Supply 85-264VAC Universal Input 12V 2A 24V 1.5A 5V 3A Slim Industrial Switching Power Supply
Mission-Critical Deployment
Localized UPS Architectures for Penang's Industrial Sectors
George Town, as the administrative and economic nerve center of Penang—the "Silicon Valley of the East"—demands power protection standards far exceeding generic commercial tolerances. Our hardware is engineered for these exact demands.
Semiconductor & Electronics Fab
Within Bayan Lepas and Perai industrial zones, microsecond voltage sags on automated SMT, wire bonding, and automated test equipment cause irreversible wafer losses. Our zero-transfer-time online UPS units and buffer modules maintain steady DC link voltages through transient sags.
Penang Port Maritime Terminals
The Swettenham Pier Cruise Terminal and container handling facilities at North Butterworth operate under severe salt mist, humidity, and tropical heat. Our IP67-rated power supplies and conformal-coated UPS electronics withstand marine corrosive factors without electrolytic breakdown.
Colocation & Edge Data Centers
George Town's expanding fintech and regional telecommunication exchanges depend on continuous, high-efficiency three-phase online double-conversion UPS systems. High power density, active power factor correction (PFC > 0.98), and N+1 modular redundancy minimize facility PUE.
Heritage Hospitality & Smart Buildings
UNESCO World Heritage conservation regulations in downtown George Town restrict structural modifications. Slim DIN rail modules (HDR & EDR series) and compact DC-UPS backup units integrate discreetly into existing building automation panels, fire controls, and security surveillance networks.
Engineering Whitepaper
Overcoming Power Quality Challenges in Tropical Industrial Grids
Deploying uninterruptible power systems in Southeast Asia requires addressing electrical disturbances specific to monsoonal weather, lightning-induced grid surges, and high harmonic distortions caused by non-linear industrial loads.
High Keraunic Surges (Lightning)
Penang experiences some of the highest lightning flash densities in the world. Standard line-interactive UPS systems often suffer varistor degradation. Our industrial units integrate multi-stage Class II / III surge protective devices (SPD) capable of clamping transient surges up to 6kV/3kA, diverting surges away from critical control processors.
Thermal Derating & Humidity Aging
With ambient temperatures frequently exceeding 34°C and relative humidity above 85%, conventional commercial power supplies experience rapid electrolytic capacitor dry-out. Keldan implements 105°C long-life Japanese electrolytic capacitors, generous heatsink thermal dissipation margins, and conformal PCB coating to guarantee continuous operation without severe derating.
Harmonic Attenuation & PFC
Heavy variable frequency drives (VFDs) and induction furnaces throughout mainland Penang create massive harmonic feedback on local feeder lines. Our active power factor correction (APFC) circuits ensure THDi < 5% and a power factor greater than 0.95 across wide load ranges, maintaining compliance with Tenaga Nasional Berhad (TNB) utility connection guidelines.
| Topological Parameter | Commercial Off-the-Shelf (COTS) UPS | Keldan Industrial On-Line Double Conversion | Keldan DC-UPS & Buffer Module |
|---|---|---|---|
| Transfer Time | 4 to 10 ms (Standard Relay Switch) | 0 ms (Continuous Inverter Feed) | 0 ms (Diode-OR / FET Seamless Transfer) |
| Input Voltage Tolerance | ±10% to ±15% before battery engagement | -30% to +25% (Ultra-Wide AC Window) | 85 VAC to 264 VAC (Universal Global Grid) |
| Operating Temperature | 0°C to +40°C (Rapid derating above 30°C) | -25°C to +70°C (Industrial specification) | -20°C to +70°C with Full Load Burn-In |
| Enclosure & Protection | IP20 Sheet Metal, no conformal coating | Heavy-gauge steel, conformal coated PCB | IP20 to IP67 sealed aluminium chassis |
| Overload Capability | 110% for 60 seconds | 150% for 60s, 200% for 200ms (Inrush Handling) | Constant current limiting & auto-recovery |
Strategic Market Trends
Emerging Power Demands in the Northern Corridor Economic Region (NCER)
Infrastructure evolution across George Town and the wider Penang development framework is driving distinct transitions in power supply specifications and procurement practices.
Migration to 24V/48V DC Bus Architecture
Automated manufacturing systems in Batu Kawan and Bayan Lepas are increasingly shifting away from bulky central AC UPS distributions to distributed 24V and 48V DC bus topologies. Placing decentralized DC-UPS units (like our SCP and EDR models) directly within control cabinets eliminates inverter losses, eliminates unnecessary AC-to-DC conversion stages, and guarantees individual cabinet resilience.
Lithium-Ion (LiFePO4) Battery Modernization
Traditional sealed lead-acid (VRLA) batteries struggle with Penang's ambient thermal conditions, suffering shortened 2-3 year lifespans when air conditioning fluctuates. Local industrial operators are aggressively transitioning to Lithium Iron Phosphate (LiFePO4) storage. Keldan's adjustable DC switching chargers provide customizable three-stage charging profiles optimized for long-life lithium battery management systems.
Smart Grid & Telemetry Integration
Penang's "Smart City" vision and Industry 4.0 factory mandates require real-time visibility into power status. Facilities across George Town require telemetry reporting on load percentage, battery internal resistance, thermal conditions, and relay contact states. Our power supplies provide isolated DC OK relay outputs and digital bus monitoring for PLC and SCADA integration.
Manufacturer Direct
Why Direct Sourcing from Yueqing Keldan Delivers Unequalled Value
Headquartered in Yueqing, Wenzhou—China's capital for precision low-voltage electrical components—Yueqing Keldan Technology Co., Ltd. eliminates trading intermediaries to give Malaysian buyers verified manufacturing capacity, strict QA, and full OEM engineering flexibility.
TÜV Rheinland Onsite Verified Manufacturer
Rather than relying on untested intermediaries, your procurement chain is directly anchored to our certified workshop. From incoming raw material verification to advanced surface-mount assembly, our 44 verified technicians guarantee repeatability, traceability, and batch consistency.
- In-house SMT & Reflow Lines
- AOI Automated Optical Inspection
- 100% Full-Load Burn-In Racks
- Complete CE & EMC Test Reports
- Direct Sea Freight to Penang Port
- OEM Custom Voltages & Housings
Procurement Clarity
Frequently Asked Questions by George Town Engineering & Procurement Teams
Specific technical answers addressing import compliance, environmental engineering, voltage specifications, and logistics coordination into Penang, Malaysia.
What is the standard shipping lead time and customs process from Ningbo/Shanghai to Penang Port (NBCT)? +
Ocean transit from our nearest deep-water ports (Ningbo-Zhoushan or Shanghai) directly to North Butterworth Container Terminal (NBCT) in Penang averages 8 to 12 days. Standard production lead times for wholesale quantities range between 10 to 20 working days depending on customization. We supply full documentation for seamless clearance under the ASEAN-China Free Trade Area (ACFTA), including Form E certificates of origin allowing Malaysian importers to benefit from preferential or zero import duties.
Are Keldan power supplies compatible with Tenaga Nasional Berhad (TNB) electrical specifications? +
Yes. Standard Malaysian low-voltage grid supplies run at 230V single-phase / 400V three-phase nominal at 50Hz, with permissible fluctuations from +10% to -6%. Our switching supplies and industrial UPS systems feature wide-input AC windows (85V–264VAC universal input or 180V–264VAC industrial ranges) that easily accommodate rural and industrial grid swings without shifting to battery backup prematurely.
How does your equipment handle high ambient humidity and salt mist corrosion near George Town's coastal facilities? +
For deployments at Swettenham Pier, maritime maintenance yards, or outdoor substations, we apply dual-layer acrylic or silicone conformal coating over both surface-mount components and through-hole solder joints. This prevents electrochemical migration and dendritic short-circuiting caused by airborne chlorides and high humidity. We also provide IP67-rated waterproof enclosed models (such as our LDV-100 series) with hermetically sealed enclosures.
Can Keldan configure custom output voltages or private labelling for local Malaysian automation OEMs? +
Yes. Our in-house R&D engineering department provides complete OEM/ODM services. We can adjust standard DC rails (e.g., custom 13.8V, 27.6V, 36V, or 54V output calibrations), modify terminal block orientations (screw vs. spring-clamp), modify metal chassis finishes, and apply private branding/laser engraving to meet your machine packaging standards with realistic project MOQs.
What is the difference between your DC-UPS modules and standard AC UPS systems for control cabinets? +
Standard AC UPS systems convert DC battery power back into 230V AC, which your cabinet's internal power supplies then convert back into 24V DC for PLC systems—losing up to 25% efficiency in double conversions. A DIN rail DC-UPS (such as the SCP series or an external DC buffer) stays directly on the 24V DC bus. When main AC drops, it feeds the DC bus instantly with 0ms transfer time, requiring zero inverter circuitry and generating significantly less heat within enclosed cabinets.
What quality screening and burn-in testing occurs before containers leave your factory? +
Every production batch undergoes an 8-stage verification matrix. Key components (capacitors, switching MOSFETs, copper windings) pass incoming IQC inspections. Following automated SMT placement, reflow, and AOI inspection, every unit is placed on dedicated automated racks for 100% full-load burn-in (aging) testing. Units are subjected to load-step transitions, over-voltage/short-circuit trips, and final high-potential insulation testing before packing.
Equip Your Facilities in George Town with Verified Power Reliability
Whether you require a single container of DIN rail power supplies for automated assembly lines or customized DC-UPS battery backup systems for mission-critical port logistics, our direct engineering team is ready to review your schematics and deliver factory-direct pricing.
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