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under The Electricity (Wiring) Regulations. Separate cable ducts and riser ducts, segregated from cables of all other circuits categories, must be provided for HV cable distribution within the buildings. A typical Sulfr hexafluoride gas sealed type 1500 kVA 3-phase 11kV/380V distribution transformers used in Hong Kong have a total weight of about 5,000kg.Get price

Appendix II (674) - EMSD

May 01, 2021 · Q6 (a) A building in Hong Kong is to be equipped with a 1500 kVA, 11000/380 V transformer for supplying electricity. The present consumption without any power factor correction capacitor bank is 1200 kVA and 800 kW.Get price

Transformers trash Hong Kong: city blasted by warring robots

Mar 06, 2014 · Transformers trash Hong Kong: city blasted by warring robots in new film trailer. Transformers trash Hong Kong: city blasted by warring robots in new film trailer Sign in/up.Get price

Transformer conservator tanks | TD Guardian Articles

May 14, 2018 · The transformer conservator tank acts similarly to the overflow tank on the radiator of a car. As the transformer load cycles, so does the oil temperature. All fluids, including transformer oil, change volume when the temperature changes. Common transformer oil changes volume by 0.07% per degree Celsius.Get price


Any fire service equipment which is manufactured, used or designed to be used as an independent unit for the purpose of extinguishing, attacking, preventing or limiting a fire, e.g. water type, foam, inert gas, any chemical extinguishers, fire blankets and sand buckets. “Pressurization of staircase” means (aGet price

Gas insulated power transformers: A growing technology - EE

Mar 12, 2018 · Gas insulated transformers (GITs) have been in use since the 1960s, but use has been restricted due to higher costs and other reasons. Gas is used as an insulating and cooling agent in gas insulated transformers. Sulphur hexafluoride (SF 6) is the main gas used in these types of transformer at present although other gases are under development. The main advantage of gas insulated transformers is that they are environmentally friendly and can be recycled easily.Get price

Cause of Hydrogen Gas in Transformers | TD World

Mar 10, 2014 · Q: What is the cause of hydrogen gas in 10 mva 35 kV to 13 kV transformers? Is this a problem with one mfg in particular? A: In order to properly diagnose a gassing problem in any particular transformer, several items must be known – history of dissolved gases, unusual events (e.g., history of lightning strikes, overloading and through faults), etc.Get price

Guidelines for installing transformers - Part 2. | ECM

Jul 01, 1999 · The successful operation of a transformer is pendent on proper installation as well as on proper design and manufacture. Part 1 of this article, which addressed installation procedures that are common to both dry- and wet-type units, appeared in the June '96 issue of ECM. This article covers installation procedures peculiar to dry-type transformers as well as those relating to fully assembledGet price

Guidelines for installing transformers, part 1. | ECM

Jun 01, 1999 · Transformers are designed with provisions for lifting, jacking, and/or rolling. These provisions will vary depending upon the weight, size, and mechanical configuration of the unit. The weight distribution should be studied by examining the inside of the transformer enclosure for dry-type units.Get price

Isolation transformer - Wikipedia

An isolation transformer is a transformer used to transfer electrical power from a source of alternating current power to some equipment or device while isolating the powered device from the power source, usually for safety reasons. Isolation transformers provide galvanic isolation; no conductive path is present between source and load. This isolation is used to protect against electric shock, to suppress electrical noise in sensitive devices, or to transfer power between two circuits which mustGet price


An ideal transformer would have no energy losses, and would be 100% efficient. In practical transformers energy is dissipated in the windings, core, and surrounding structures. Larger transformers are generally more efficient, and those rated for electricity distribution usually perform better than 98%.Get price

Code of Practice for Fire Safety in Buildings 2011

Unit Senior Building Services Engineer Architectural Services Department . Professor of the Hong Kong Polytechnic University Professor of the Hong Kong University of Science and Technology Representatives of the Hong Kong Institute of Architects Representatives of the Hong Kong Institution of EngineersGet price

Electricity Generation and Transmission in Hong Kong

In Hong Kong, we are consuming over 3.8 × 1014J of electrical energy every day [1]! In this module, you will learn how such a large amount of electrical energy is generated and transmitted. In Hong Kong, electricity consumed is generated using coal, natural gas and nuclear energy as the sources. Fig. 1 The Lamma Power Station of HEC (photoGet price

Gas Insulated Transformer GIT - MITSUBISHI ELECTRIC

Gas Insulated Transformer(GIT) IEC-60076 part 15 gas-filled power transformers enacted in 2008 Non-flammable and non-explosive Non-Flammable and Non-Explosive Flexible Arrangement Safety Transformer 1 2 Flexible arrangement OITs are an explosion risk OITs require a firefighting system The tank of the MITSUBISHI GIT is insulated with nonGet price


No. 1 Hong Chong Road, 5/F., Tsim Sha Tsui East, Kowloon, Hong Kong ꖻ덂색뢹Our Ref.: (60) in FP 314/07 III ꣓꣧색뢹Your Ref.: 륱끔놾뢹Telex: 39607 HKFSD HX 맏ꓥ뛇꽵Fax: 852-2723 2197 (24 ꑰ껉 Hours) 륱 룜 Tel. No.: 22 October 1996 F.S.D. Circular Letter No. 4/96 F.S.D. Circular LettersGet price

World Power Transformers Industry - PR Newswire

Jun 17, 2015 · Future for Gas-Insulated Transformers Appears Bright II-19 Alstom Expands Power Transformer Production Unit II-50 Hong Kong, Singapore, Japan, Colombia, and Others (includes correspondingGet price


• 3.3m above ground for substation without transformer. • 3.6m above ground for substation with transformer and 630mm diameter exhaust fan. • 3.8m above ground for substation with transformer and 800mm diameter exhaust fan. The recommended maximum ceiling height is 4m but subjected to theGet price

Reading a transformer nameplate | TD Guardian Articles

May 04, 2017 · The cooling class designations are normally listed in order with a diagonal slash separating each one. In Figure 2 we see the cooling classes for this transformer are listed as ONAN/ONAF/OFAF. Let’s take a quick look at what those four letters mean.Get price

Alstom - Wikipedia

Alstom SA is a French multinational rolling stock manufacturer operating worldwide in rail transport markets, active in the fields of passenger transportation, signalling, and locomotives, with products including the AGV, TGV, Eurostar, Avelia and New Pendolino high-speed trains, in addition to suburban, regional and metro trains, and Citadis trams.Get price

Separator Exhaust Heads - Eaton Corporation - Filtration

Units permit free flow of steam, gas or vapors with an absolute minimum of back pressure ; Operation The moisture laden gas, air or steam enters at the inlet of the exhaust head where it is directed into a centrifugal upward motion. The entrained solids and moisture droplets are separated out by a reduction in velocity.Get price

Type 10-R Gas Liquid Separators - Eaton - Filtration

Type 10-R. Designed for liquid slugs or heavy liquid loads, the Eaton standard size Type 10-R Series gas liquid separators, formerly Wright Austin, can be provided with a large reservoir to meet liquid holdup requirements. Eaton provides a compact gas liquid separator model for applications where space is restricted. When properly sized, installed, and drained, will remove up to 99% of all liquid and solid entrainment where particle size exceeds 10 microns.Get price

Filters | Hong Kong

Parker offers one of the industrybroadest selections of filters, including air, compressed air, cartridge, engine, hydraulic, pleated, oil and steam filter solutions for numerous industrial and commercial applications.Get price

HVAC Equipment for Efficient Climate Control | Johnson Controls

AMI units set a new standard for quality and flexibility—ideal for schools, hospitals, and commercial buildings. Parts and Services We offer a range of parts that offer the exact form, fit, and functionality you need, along with maintenance services to make them work in your system.Get price | Building a world that works | General Electric

GE rises to the challenge of building a world that works. Learn how our dedicated team, leading technology, and global reach and capabilities help the world work more efficiently, reliably, and safely.Get price

Inspection and testing of earth electrodes

An earth electrode and earth electrode resistance are defined in BS 7671 as: Earth electrode – conductive part, which may be embedded in the soil or in a specific conductive medium, e.g. concrete or coke, in electrical contact with the Earth.Get price

3M™ DBI-SALA® Confined Space Portable Fall Arrest Post

The confined space portable fall arrest post provides protection and complete mobility for three workers on top of transformers or other types of vertical platforms with potential fall hazards. It’s compact and lightweight design of only 38 lbs. (17.2 kg) makes the post very easy to transport and put in place.Get price

The Basics of Electrical Transformers - D F Liq

Sep 12, 2015 · Separate single-phase units can offer the same results as three-phase transfers when they are externally interconnected. Three Phase Transformer A triple-phase (or three-phase) transformer has three sets of primary and secondary windings to form a bank of three single phase transformers.Get price


kerosene, gas/diesel oil excl. biofuels, fuel oil, naphtha, white spirit, lubricants, bitumen, paraffin waxes, petroleum coke and non-specified oil products. Natural gas NATGAS Gas represents natural gas. It excludes natural gas liquids. Non-renewables wastes OTHER Other includes industrial waste and non-renewable municipal waste. Memo: BiofuelsGet price

Is The Hong Kong and China Gas Company Limited (HKG:3

May 25, 2020 · Using our data, Hong Kong and China GasROCE appears to be significantly below the 9.1% average in the Gas Utilities industry. This performance could be negative if sustained, as it suggests theGet price