Rockwill Electric Group
1. Influence on distribution transformers (1) The three-phase load imbalance of power transformer will increase the loss of transformer: the loss of transformer includes no-load loss and load loss.
Date:2020-10-05 View:2859
The page introduce what is microcomputer protection. The content includes the advantages, features, application range, types, etc. Advantages of microcomputer protection include high reliability, high precision, great flexibility, easy to maintain and debug.
Date:2020-09-19 View:1495
Basic knowledges about distribution transformer, including definition, types like oil immersed type, dry type, pad mounted type, pole mounted type. Distribution transformer is a transformer that provides the final voltage transformation in the electric power distribution system, stepping down the voltage used in the distribution lines
Date:2020-07-17 View:1347
Recloser and Sectionalizer Coordination --Achieving Distribution Line Automation under Traditional Condition -- -- Realizing Distribution Automation without SCADA System -- #recloser #sectionalizer #distribution automation #Semi Smartgrid
Date:2020-06-03 View:1702
Explain difference between AIS and GIS. MV switchgear is an important part of power distribution system for maintaining the continuity of service, and you have to consider some different aspects based on your needs before selecting a suitable MV switchgear.
Date:2020-06-03 View:1244
What is ACR Auto Recloser? Auto recloser (ACR) also named automatic circuit recloser is recognized by electric utilities throughout the world as an essential device for achieving their prime goal: providing maximum continuity of electric service to customers.
Date:2020-05-10 View:1292
Details introduction about outdoor auto vacuum recloser which manufactured by Rockwill Electric. This page will help learn more knowledges about RCW auto recloser as improvements in parts and assemblies are made.
Date:2020-01-07 View:948
What is Grounding? Grounding refers to connecting the neutral point, shell or bracket of the equipment and electrical device with the grounding device by conductor. This is the way to prevent electric shock and equipment damage.
Date:2020-12-26 View:411
installation manual of RVR single phase 32 step voltage regulator which is manufactured by Rockwill in China.
Date:2019-09-17 View:382
What is Distance Protection Relay? Distance protection relay is the name given to the protection, whose action depends on the distance of the feeding point to the fault. The time of operation of such protection is a function of the ratio of voltage and current, i.e., impedance.
Date:2019-08-29 View:728
The professional VCB vacuum circuit breaker manufacturer. Rockwill Electric is the professional manufacturer and designer and patent woned factory of Medium voltage and high voltage VCB vacuum circuit breaker from China.
Date:2019-06-15 View:671
What is compact substation CSS? The CSS Compact substation is actual a prefabricated eletric equipment unit which is comprising of MV / HV switchgear, Power Distribution transformer, LV switchboard, Connection busbar and other accessories.
Date:2019-05-09 View:716
Ring main unit (RMU) is a set of high voltage switchgear installed in the steel plate metal cabinet or made into an assembly interval ring network power supply unit. The core part adopts load break switch and fuse, which has the advantages of simple structure, small volume, low price.
Date:2019-04-09 View:1162
China outdoor SF6 load break switch (LBS) which is a capable small fault current breaking switchgear. It is a disconnect switch that has been designed to provide making or breaking of specified currents.
Date:2019-04-04 View:958
What is capswitch capacitor switch? A Medium voltage or High voltage Capacitor switch or Capswitch is a special switchgear for application in switching capacitive load network. It can be vacuum type or SF6 gas type.
Date:2019-03-20 View:412
What is a AVR step voltage regulator ? A step voltage regulator helps prevent a poor-quality signal from being sent over distribution lines to users. Step voltage regulators are mainly used in utility distribution applications for the disbursement of electrical signals to properties.
Date:2019-03-01 View:568
Application Reason of Step Voltage Regulators: The voltage on modern distribution circuits is becoming increasing difficult to manage. New distributed energy resources, such as solar, combined with the growth of sophisticated loads creates voltage challenges on distribution network systems. Existing voltage control devices cannot maintain a consistent voltage profile.
Date:2021-09-28 View:40
Difference Between DC Charging and AC Charging. AC charging has lower power, requires longer charging time, but has less loss to the battery. On the contrary, DC charging pile has higher charging power, faster charging, but has greater loss to the battery.
Date:2021-09-22 View:46
The indoor SF6 load break switch is a kind of switching device with a simple arc extinguishing device which is installed in ring main unit and switchgear. It can be used for switching and breaking load current and overload current.
Date:2021-09-18 View:40
RPS type SF6 load break switch (SF6 LBS) is a pole-mounted load beaker switch independently developed by Wenzhou Rockwill Electric Co., Ltd. It is suitable for load current, overload current breaking and closing in a voltage range of 11~40.5kV distribution network ,also can automatically isolate faulty distribution lines.
Date:2021-09-17 View:45
At present, most enterprises are connected to the power grid by using 33kV box type prefabricated compact substation built by themselves. Therefore, the quality control of box type substation is very important, This not only affects the reliability of power supply, but also has a great impact on the normal operation and economic benefits of the enterprise.
Date:2021-04-10 View:227
Oil-immersed Power Transformer Installation and Operation Manual. The instruction manual applies to the low-loss oil-immersed power transformers with the capacity up to 6300KVA.
Date:2021-03-17 View:549
What happens if there is gas leakage in the ring main unit? The page explains some influence of Ring Main Unit Gas Leakage Problem.
Date:2021-01-05 View:436
Ring Main Unit: indoor ac high voltage gas insulated metal-enclosed switchgear (RMU) is a new generation of switchgear equipment, the main switch can either use permanent magnetic vacuum circuit breaker or spring mechanism vacuum circuit breaker.
Date:2021-01-05 View:710
is a kind of indoor and outdoor compact distribution equipment. It combines the high voltage switch equipment, distribution transformers and low voltage power distribution equipment together.
Date:2020-12-28 View:903
Common faults and solutions of LV / MV switchgear. Including reject closing and opening, abnormal sound, locking failure, light out, remote control failure, indicator failure, etc.
Date:2020-12-28 View:475
Step Voltage Regulator - A device which will provide a constant voltage output under varying input voltages and load currents. Regulating +10% voltage and –10% voltage. Including auto transformer, load tap changer, voltage regulator control.
Date:2020-12-24 View:398
Questions and Answers (Q&A) about Power Distribution Transformer. It helps you know more basic knowledges about transformer.
Date:2020-12-24 View:519
KEMA type tested pole mounted sf6 gas load break switch from Rockwill!
Date:2018-10-10 View:215
How to setting the “close pulse time” and “trip pulse time”? Step1: Press the “Enter” key, will see the main screen, as show below: Step2: When the cursor is on the “EDIT” option, press the “Enter”
Date:2018-10-10 View:180

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