Knowledge Center
Articles & Insights
Practical know-how from ONVALLA engineers on cranes, hoists, solar rooftop and EV charging: industry knowledge, products and solutions, selection tips, and company news.
All articles
What Is Solar Energy? Solar Systems for Industrial Facilities and What to Consider Before Installation
What solar energy is, how solar systems serve industrial facilities, and what to check before installing a rooftop system at your plant.
From Engineering Design to a Working Crane: Design, Installation, and Testing
How an engineering design becomes a working crane: design, equipment supply, installation, inspection, adjustment and testing before handover.
Why Should Industrial Crane Design Start with Understanding the Site?
Why crane design should start from the real site: structure, loads, operating frequency and environment decide the right crane, not the catalogue.
How Does ONVALLA Work with Industrial Customers? From Requirements to Lifting Solutions
How ONVALLA works with industrial customers: requirements and site assessment, solution design, installation, testing, commissioning and after-sales support.
What Is an EV Charger? How to Choose the Right EV Charging Solution
What an EV charger is and how to choose one: vehicle charging capability, charger power, installation location and how the charger will be used.
ABUS and ONVALLA: Combining Expertise for Industrial Facilities
How ABUS Kransysteme's German crane and hoist technology and ONVALLA's engineering in Thailand combine, from equipment selection to service and support.
ONVALLA – Industrial Crane and Hoist Solutions Expert in Thailand
Who ONVALLA is: a Thai specialist in industrial cranes, electric hoists and lifting solutions, from equipment supply to inspection, maintenance and after-sales service.
Repair, Retrofit or Replace a Large Crane? How to Decide What Pays Off Long-Term
Decide between overhaul, retrofit and a new crane using crane age, the 50% rule of thumb, downtime cost and the safety/technology gap. Comparison table and FAQ.
European vs. Asian Hoists: Design Philosophy, Safety Systems and Total Cost Compared
European hoists favour compact FEM-based design, inverter control and electronic overload limiters; Asian hoists favour lower prices and simple mechanics. Compare and choose.
Do Schneider EV Chargers Support OCPP? What It Means for Charging Businesses
Yes. Schneider Charge Pro and EVlink Pro AC/DC support OCPP 1.6J, so you can use any CPMS, bill users and balance load across chargers without vendor lock-in.
N-Type vs. P-Type Solar Panels: Differences and Which Suits Thailand’s Climate
N-type panels use phosphorus-doped silicon for higher efficiency, almost no LID and better heat performance; P-type (boron) costs less. Comparison and how to choose in Thailand.
Power Plant Crane Standards: Duty Class, Brakes, Certification and Documents Engineers Should Specify
What to specify for power plant cranes: FEM 1.001 or CMAA duty class, IEC 60034 motors, EN 13001 design, redundant brakes, third-party certification, FAT/SAT and handover documents.
What Is Trina Solar, and Why Do Factories Choose Its Panels?
Trina Solar is a global PV manufacturer known for high-efficiency, durable panels with Vertex and N-type technology and a 25-year warranty. Supplied and installed by ONVALLA.
What Protection Systems Should an EV Charger Have? 5 Essentials for Safe, Long-Term Use
Overvoltage, overcurrent, residual current (RCD/RCBO), surge protection (SPD) and thermal protection keep an EV charger safe, stable and long-lasting. What happens without them.
Why Do World-Class Factories Invest in High-Quality Hoists? The Business Case Beyond Price
Leading factories, especially in Europe, buy high-quality hoists to protect safety, avoid unplanned downtime and lower total cost of ownership. How to recognise a quality hoist.
A Good Solar System Is Designed for the Future: 4 Things to Plan Before You Install
Size solar for the next 5–10 years, not just today: a battery-ready inverter, cabinets and main cables sized for expansion, mounting that takes extra panels, and future demand.
Crane Preventive Maintenance: Why Good PM Goes Beyond the Checklist
Effective crane PM adds wear measurement and remaining-life estimates, environment-specific care and loaded functional tests to the checklist, so issues are caught before failure.
Same Load, Different Hoist Lifespan: Why Duty Cycle Matters More Than Capacity
Two hoists lifting the same load can wear out at very different rates. Lifting frequency, start/stop cycles, shock loads and duty cycle decide hoist life, not capacity alone.
How to Choose the Right ABUS Hoist: Types and 4 Selection Factors
Compare ABUS electric, chain, wire rope and crane hoists, then choose by load capacity, lifting height, lifting speed and operating environment.
4 Reasons to Install an EV Charger at Home with ONVALLA
A home EV charger means charging any time, installation to international standards with certified equipment, lower costs than public stations (even lower with solar), and flexible options.
Installing Solar Cells at Home: Benefits and 3 Steps to a Long-Term Saving
Home solar lowers electricity bills, cuts greenhouse gases and adds property value. Pick a sunny location, choose quality panels and inverters, and use experienced installers.
ONVALLA Solar Warranty and After-Sales Service: What Is Covered
What ONVALLA's solar warranty covers (product, performance of at least 80% for up to 25 years, inverters and batteries) plus inspection, maintenance, repair and technical support.
EV Charger Levels, Connector Types and Cables: How to Choose the Right Equipment for Your EV
Level 1, Level 2 and DC fast charging explained; Type 1, Type 2, CHAdeMO and CCS connectors; power ratings of 7, 22 and 50 kW+; cable length and safety features.
EGON Lifting Professional: Hoists and Lifting Equipment Designed Around Your Site
EGON Lifting Professional supplies hoists and lifting equipment, with a team of 30+ years' experience that designs and installs to suit each site's load, travel and environment.
How to Choose Solar Panels: High-Quality vs. Low-Cost and the Real Lifetime Cost
Choose solar panels on lifetime cost, not price: output, 20–25-year life, degradation, IEC/TÜV certification and warranty. Mono vs poly vs thin-film, inverters and payback.
5 Technologies Changing EV Chargers: IoT, Fast, Wireless, Smart Energy and Bidirectional Charging
Connected (IoT) chargers, fast charging, wireless charging, smart energy management and bidirectional charging: what each does and how it benefits EV owners and businesses.
Why Choose ABUS Cranes and Hoists? Design Features and Strengths Explained
ABUS hoists place the motor under the drum for minimal wall-to-hook distance, use Class F motor windings, IP55 enclosures and a fail-safe DC disc brake with manual release.
ONVALLA Installs 14 ABUS Cranes at Sansiri’s Precast Factories 5 and 6 in Pathum Thani
Sansiri chose ONVALLA to install 14 ABUS overhead and gantry cranes (20–80 tons) at its precast factories 5 and 6 in Pathum Thani, a THB 1.4 billion project on 100+ rai.
5 Benefits of Solar Rooftop for Factories, and How to Plan the Installation
Solar rooftop cuts factory energy and operating costs, strengthens corporate image, reduces greenhouse gases, adds asset value and improves energy security. How to plan it.
The EV Market and Why EV Chargers Are the Infrastructure That Makes It Work
EV adoption is driven by government policy, better lithium-ion batteries and consumer demand. Why chargers are essential for convenience, charging speed and safety.
Crane Service Contracts: What They Cover and Why Factories Use Them
An ONVALLA crane service contract covers scheduled PM, legally required load tests, priority repairs, spare parts, runway surveys and operator training, to cut downtime and cost.
ABUS Electric Wire Rope Hoists for Heavy Lifting: Features and When to Use Them
ABUS electric wire rope hoists suit heavy loads in large plants: durable materials, powerful motors, efficient brakes, pendant or radio control, and many models.
Gantry Cranes from ONVALLA: Full and Semi-Gantry Designs for Yards and Plants
ONVALLA designs, builds, installs and maintains gantry and semi-gantry cranes, single-girder 1–20 t and double-girder 2–500 t, for factories, ports, yards and construction.
Overhead Cranes from ONVALLA: Single-Girder, Double-Girder and Underhung Designs
ONVALLA designs single-girder (0.5–20 t), double-girder (2–500 t) and underhung overhead cranes, with double-speed or inverter control, to reduce handling time and risk.
Crane Spare Parts and Repair Service from ONVALLA: How to Choose Quality Parts
ONVALLA stocks ABUS crane and hoist spare parts, repairs, overhauls and inspects cranes, and issues legal inspection certificates. Five tips for choosing quality crane parts.
Crane Inspection Law in Thailand: What Are Por Jor 1 and Por Jor 2, and What If You Skip an Inspection?
Por Jor 1 covers fixed cranes and Por Jor 2 mobile cranes. Inspection frequency by capacity, load-test rules, and the legal risks of skipping crane inspections.
ONVALLA EV Chargers: Schneider Electric and Grasen, Supplied, Installed and Serviced
ONVALLA is an official distributor of Schneider Electric and Grasen EV chargers, from EVlink home wallboxes to DC fast chargers up to 360 kW, with installation and after-sales.
Basic Crane Care: 4 Habits and an 18-Point Checklist to Extend Crane Life
Daily checks, measuring wear, weekly lubrication and prompt repairs keep cranes safe and long-lasting. Includes a component checklist for motors, brakes, limit switches and more.
Crane Operator Training in Thailand: Legal Requirements, the “4 Roles”, and ONVALLA’s Course
Thai law requires crane operators, signallers, riggers and lift supervisors to be trained before work, with refresher training every two years. Course hours and ONVALLA's modules.
Overhead Crane Safety: Golden Rules and Practical Tips for Every Lift
Never exceed SWL, inspect before use, never lift over people, lift vertically, and communicate clearly. Plus practical tips on power cuts, lock-out and signalling.
How to Clean Solar Panels Safely: 8 Steps and 5 Things to Avoid
Dust, leaves and oily grime can cut solar output by an estimated 15–25%. Shut down the system, clean in cool hours with soft water and a soft brush, and avoid high pressure.
Installing Solar Rooftop Legally in Thailand: Permit Steps, Documents and Size Thresholds
The legal steps to install solar rooftop in Thailand: building permit (Or.1), ERC exemption registration, MEA/PEA connection approval, and the documents and engineer sign-offs needed.
How to Calculate Solar System Size, Panel Count and Roof Area: Two Methods with Worked Examples
Size a solar system from daytime meter readings or appliance loads: kW needed, number of panels, roof area, monthly savings and payback, with step-by-step worked examples.
ONVALLA Solar Rooftop: One-Stop Solar Installation for Homes, Businesses and Factories
ONVALLA designs, permits, installs and services solar rooftop systems (on-grid, off-grid, hybrid) with Tier 1 panels and Huawei or SolarEdge inverters, plus long warranties.
Warehouse by ONVALLA: Storage Systems, Conveyors and Equipment for Warehouses
Warehouse by ONVALLA covers static and dynamic racking, automatic storage and retrieval systems, Dorner conveyors, Heli forklifts, shelving, HVLS fans and PVC, with design and after-sales.
What Are the Main Components of an Industrial Crane? 5 Parts Every User Should Know
The five main crane components: electric hoist, long-travel drive, cross-travel power supply, safety devices, and runway and rails. What each does and why all must be installed.
How Solar Cells Work, and On-Grid vs. Off-Grid vs. Hybrid Systems Explained
Solar cells turn sunlight into DC power; an inverter converts it to AC. Compare on-grid, off-grid and hybrid solar systems, plus the main pros and cons of solar.
Fixing Crane Wheel Wobble and Rail Rubbing with Guide Rollers: A 40- and 50-Ton Crane Case Study
A customer's 40- and 50-ton cranes had wobbling long-travel wheels rubbing the rail. ONVALLA checked runway and crane span, then installed guide rollers to correct it.
ABUS Crane Consulting, Design and Installation by ONVALLA Engineers: The 4-Step Service
ONVALLA engineers take ABUS crane projects from consultation and runway site survey through design, standard-compliant installation and testing, to after-sales service.
ABUS Crane Systems: German Cranes and Hoists, Supplied and Supported in Thailand by ONVALLA
ABUS, founded in Germany in 1969, makes overhead cranes, jib cranes and electric hoists. ONVALLA, ABUS distributor in Thailand, designs, installs, tests and services them.
Underslung Crane and Electric Overhead Side Crane: Two Solutions for Tight Buildings
An underslung crane hangs from the building structure with no extra columns and more lifting height; ONVALLA's electric overhead side crane extends outside to lift loads in.
Product Development for Sustainable Growth: ONVALLA Builds an Installation Cart
With more than 30 years of crane manufacturing, ONVALLA developed an Installation Cart built to the customer's requirements, extending its production capability.
Types of Factory Cranes: Overhead vs. Gantry Crane and How to Choose
A guide to factory crane types (overhead, gantry, semi-gantry, jib, wall and monorail) with typical capacities and spans, plus a clear overhead vs. gantry crane comparison.
Safe Design and Special Design: How ONVALLA Engineers Cranes and Below-the-Hook Equipment
ONVALLA designs cranes for safety and quality, and engineers special tools and equipment that work with the crane, plus material-handling consulting for correct use.
Safety in Crane Installation Work: Planning, Pre-Checks and PPE
Safe crane installation starts with planning the work area, checking equipment and surroundings, and wearing proper PPE. See how ONVALLA protects technicians and visitors.
ONVALLA’s ISO Management Systems: ISO 9001, ISO 45001 and ISO 14001
What ISO 9001, ISO 45001 and ISO 14001 mean and how ONVALLA applies them to quality, workplace safety in lifting operations, and environmental responsibility.
ONVALLA Technicians Are Trained and Certified Before They Work
Every ONVALLA production technician must complete training and pass an exam to be certified before working, to reduce errors and meet company quality standards.
How ONVALLA Controls Quality: Incoming Inspection and Weekly Spare Parts Stock Checks
Every item is inspected for defects before it enters the ONVALLA warehouse, and the spare parts team checks stock weekly so ABUS crane customers get parts promptly.
Hoist Overhaul vs. Buying a New Hoist: How ONVALLA Helps You Decide
An overhaul can restore an existing hoist for less than a replacement. ONVALLA compares overhaul and new-hoist costs so customers get the best value within their budget.
What Is a Factory Acceptance Test (FAT) for Cranes, and Why Does It Matter?
A Factory Acceptance Test (FAT) checks a crane or hoist at the factory before delivery. Learn what FAT covers and how ONVALLA uses traceable records and calibrated tools.
ONVALLA and AMR Asia Build Power Rail Installation Vehicles for Bangkok’s Pink and Yellow Monorail Lines
ONVALLA and AMR Asia co-designed Power Rail installation vehicles for Thailand's first straddle monorail lines, the MRT Pink and Yellow Lines. ONVALLA built and tested 8 sets.
No articles match your search. Try another word or category.
FAQ
Quick answers from our articles
Short answers to questions we are often asked. Each one links to the full article.
What are Por Jor 1 and Por Jor 2 crane inspections in Thailand?
Under Thai law, Por Jor 1 (ปจ.1) covers fixed cranes such as overhead, gantry, jib and tower cranes, and Por Jor 2 (ปจ.2) covers mobile cranes mounted on vehicles. Both must be inspected and load-tested by a mechanical engineer at intervals set by rated capacity and use; for example, a crane in non-construction work rated above 3 tons and up to 50 tons is inspected every 6 months. Read the full article
What is the difference between an overhead crane and a gantry crane?
An overhead crane runs on rails fixed to beams or the building structure, so it keeps the floor clear and is used mainly indoors. A gantry crane stands on its own legs and runs on rails at floor level, so it suits outdoor yards and buildings without crane columns. Both come in single-girder and double-girder designs. Read the full article
What is the difference between on-grid, off-grid and hybrid solar systems?
An on-grid system uses solar and utility power together without a battery and pays back fastest at sites that use most of their power in the daytime. An off-grid system is not connected to the utility and suits remote locations. A hybrid system adds a battery to store surplus power for use after dark, but costs more and pays back more slowly. Read the full article
How do I choose the right EV charger for my vehicle?
Match three things to the vehicle: the connector it accepts (Type 1, Type 2, CHAdeMO or CCS), the charging power it can take (for example 7, 22 or 50 kW and above), and a cable of suitable length and quality. Then choose a charger with built-in safety protection from a reputable maker, installed by professionals. Read the full article
Need advice for your site?
Tell us about your loads, building or energy use, and an ONVALLA engineer will recommend a suitable crane, hoist, solar or EV charging solution.
ONVALLA Co., Ltd. · Tel. (+66) 02-193 5380-5 · info@onvalla.com