Using High-Speed Grounding Switches
Automatic high-speed grounding switches are applied for protection of power transformers when the cost of supplying other protective equipment is deemed unjustifiable and the amount of system disturbance that the high-speed grounding switch creates is judged acceptable.
The switches are generally actuated by discharging a spring mechanism to provide the ‘‘high-speed’’ operation.
The grounding switch operates to provide a deliberate ground fault on one phase of the high-voltage bus supplying the power transformer, disrupting the normally balanced 120° phase shifted three-phase system by effectively removing one phase and causing the other two phases to become 180º phase shifted relative to each other.
This system imbalance is remotely detected by protective relaying equipment that operates thetransmission line breakers at the remote end of the line supplying the power transformer,tripping the circuit open to clear the fault. This scheme also imposes a voltage interruption to all other loads connected between the remote circuit breakers and the power transformer as well as a transient spike to the protected power transformer, effectively shortening the transformer’s useful life.
Frequently, a system utilizing a high-speed ground switch also includes the use of a motor operated disconnect switch and a relay system to sense bus voltage.
The relay system’s logic allows operation of the motor operated disconnect switch when there is no voltage on the transmission line to provide automatic isolation of the faulted power transformer and to allow reclosing operations of the remote breakers to restore service to the transmission line and to all other loads fed by this line.
The grounding switch scheme is dependent on the ability of the source transmission line relay protection scheme to recognize and clear the fault by opening the remote circuit breaker. Clearing times are necessarily longer since the fault levels are not normally within the levels appropriate for an instantaneous trip response.
The lengthening of the trip time also imposes additional stress on the equipment being protected and should be considered when selecting this method for power transformer protection.
High-speed grounding switches are usually considered when relative fault levels are low so that the risk of significant damage to the power transformer due to the extended trip times is mitigated.
for your philippine electrical concerns...needs...installation...orders...safeelectrical2013@gmail.com
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FOR YOUR PHILIPPINE ELECTRICAL CONCERNS...NEEDS...INSTALLATION...QUOTATION...ORDERS
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FOR PHILIPPINE INQUIRIES LIKE LIGHTNING ARRESTER SUPPLY AND INSTALLATION
CONTACT US:
FOR PHILIPPINE INQUIRIES LIKE LIGHTNING ARRESTER SUPPLY AND INSTALLATION
CONTACT US:
FOR PHILIPPINE INQUIRIES LIKE LIGHTNING ARRESTER SUPPLY AND INSTALLATION
CONTACT US:
MOBILE NUMBERS: SMART: +63 09079522099
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LIGHTNING ARRESTER SUPPLIER AND INSTALLER IN THE PHILIPPINES
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ELECTRICAL FENCE SUPPLIER AND INSTALLER IN THE PHILIPPINE ECONOMIC ZONE
LIGHTNING ARRESTER SUPPLIER AND INSTALLER IN THE VISAYA REGION
ELECTRICAL FENCE SUPPLIER AND INSTALLER IN THE VISAYAS REGION
LIGHTNING ARRESTER SUPPLIER AND INSTALLER IN THE MINDANAO
ELECTRICAL FENCE SUPPLIER AND INSTALLER IN THE MINDANAO
FOR YOUR LIGHTNING STRIKE PROTECTION...LET US HELP YOU AVOID SUCH ACCIDENTS...
BEFORE IT IS TOO LATE...BEFORE IT IS TOO LATE...
WHEN LIGHTNING STRIKE HIT YOU..
I GUARANTEE YOU..YOU'LL NEVER LIVE TO TELL YOUR EXPERIENCE...
DON'T BE THE NEXT VICTIM...PROTECT YOURSELF..YOUR FAMILY..YOUR BUSINESS AT ALL TIMES..
INSTALL A LIGHTNING ARRESTER IN YOUR PLACE...DO IT NOW BEFORE YOUR CAUGHT UNAWARE...
IF YOU HAVE LIGHTING PROTECTION INSTALLED...
YOU'LL HAVE PEACE OF MIND...YOU CAN SLEEP WELL EVEN WHEN LIGHTNING STRIKES...
YOU KNOW YOUR WELL PROTECTED...
IN YOUR HOME, IN YOUR PLACE OF BUSINESS AND IN YOUR PROPERTIES...
HURRY..CALL US...NOW!!!!
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"PHILIPPINE FOREIGNERS AND PHILIPPINE PROVINCES ELECTRICAL SUPPLIER
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"SAFE ELECTRICAL SUPPLY AND SERVICES"
"SAFE ELECTRICAL SUPPLY AND SERVICES"
"SAFE ELECTRICAL SUPPLY AND SERVICES"
Jigz Enerio - Sales/Project Coordinator
Safe Electrical Supply and Services
Registered Master Electrician PRC#00034433
Real Estate Broker PRC#0000838
Institute of Integrated Electrical Engineers(IIEE)Membership#19420
Telephone: 4068727 4922566
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"The Elevator to Success is always out of order,
but one can always use the stairs"
"One does not Lead by hitting people over the Head,
that's assault not Leadership" - Eisenhower
"If You Think Education is Expensive,
count the cost of being ignorant" - Past Harvard President
"If you're gonna be thinking anyway,
you might as well think big" - Donald Trump
"Insanity, doing the same things
over and over again,
then expecting a different result" - Albert Einstein
"Small minds talk of people,
average minds talk of events,
great minds talk of ideas"
“I shall pass this way but once; any good that I can do
or any kindness I can show to any human being;
let me do it now. Let me not defer nor neglect it,
for I shall not pass this way again.”
Etienne de Grellet (1773-1855);
Quaker missionary
If you wanna make the world a better place
take a look at yourself and make a change
- Michael Jackson
"The Best things in life are FREE,
Family, Relatives, Friends, Health and most especially Time"
Our company operates in the principle of cooperation, collaboration,
joint partnership/marketing and cross promotion.
We treat our people,clients,suppliers,affiliates
subcontractors, business owners, entrepreneurs(SMALL TIME or Bigtime),
common people,sales people especially PURCHASING OFFICERS as our business partners and friends.
We operate in the principle of Win-Win in every transactions we get involved in
and our company would like to establish good long-term relationship with the client we serve...
We value and aim for REPEAT BUSINESS...and not just for a one-time transaction...
Delivery Schedule: 9am to 10pm Monday to Friday Only
OFFICE DAYS: Monday to Friday Only
9-12PM TO 1-5PM ONLY
Saturday: Lord's day "EL SHADDAI" The God who is more than enough
Sunday: Family day
10% of what the company earns, we give to the Lord,
10% of what the company earns, we give to charity,
this is the company's way of giving back part of what it earns,
to the community and above.
"It is unwise to pay too much, but it's worst to pay too little.
When you pay too much, you lose a little money - that is all...
When you pay too little, You sometimes lose everything,
Because the thing you bought or the service you acquired
was incapable of doing the thing it was bought or intended to do.
The common law of business balance
prohibits paying a little and getting a lot - it can't be done.
If you deal with the lowest bidder,
It is well to add something for the risk you run,
And if you do that,
You will have enough to pay for something better."
- JOHN RUSKIN(1819 - 1900)
"Good things aren't cheap,
and cheap things aren't good"
HEALTH TIPS HEALTH TIPS HEALTH TIPS HEALTH TIPS HEALTH TIPS HEALTH TIPS
ATTENTION: FOR ALL INDIVIDUALS ESPECIALLY THOSE AGE 40 AND ABOVE.
MEDICAL EXPERIMENT - MIRACLES WITH WATER
Japanese Sickness Association has published the following experiment with WATER.
They Claim 100% success for curing old and new diseases as follows:
1. Headache, BP, Anaemia, Arthrosis, Paralysis, Palpitation, Epilepsy and Obesity
2. Cough, Bronchitis, Asthma, and Tuberculosis
3. Meningitis and any other diseases connected with URINE and LIVER.
4. Hyper-acidity, Gastritis, Dysentery, Constipation, Piles and Diabetes
5. Any other diseases connected with Eye, Nose and Throat.
6. Irregular menstrual periods of women
METHOD OF TREATMENT AND MAINTENANCE:
1. Wake-up early morning and drink Four(4) glasses (160ml each) in an empty stomach.
Thereafter, no solids or liquids should be taken up to 45 minutes.
2. Normal breakfast can be taken after the 45 minutes time elapsed.
3. Nothing either liquid or solid should be taken for Two(2) hours after breakfast, the same as with Lunch and Dinner.
4. After Dinner nothing should be taken before bedtime or sleep.
Sick and old people will find it difficult to drink Four(4) glasses of water at an instant in the beginning, but, can increase
gradually to the recommended level in a short time period.
Experiment has proved that the following diseases have been cured on treatment of water for the period shown against them
a) Hypertension - 30 days d) Constipation - 10 days
b) Gastric Problems - 30 days e) Cancer - 6 months
c) Diabetes - 30 days f) Tuberculosis - 3 months
Those who suffering from Arthritis should try this experiment three(3) times a day for one(1) week and thereafter reduce to
once in the morning. For first few days you may experience to pass urine more than the norma, but no side effects.
THIS WILL CLEANSED YOUR BODY OF IMPURITIES AND WILL
PREVENT MANY TYPES OF DISEASES...
EXERCISE RELIGIOUSLY...
AS THE SAYING GOES "HEALTH IS WEALTH"
REMEMBER:
70% of our body is made up of water...
only 30% of our body is solid...
HEALTH IS WEALTH...
WHAT'S THE USE OF HAVING A BILLION
BUT LYING IN A BED - SICK
OR SUFFERING FROM AN ILLNESS.....
I WOULD RATHER HAVE A CLEAN BILL OF HEALTH FOR A BILLION.
WHEN YOU REACH THE AGE OF 35 EXERCISE IS A MUST...
WATCH YOUR DIET...
EXERCISE DAILY AND RELIGIOUSLY
TAKE YOUR MULTIVITAMINS TO SUPPLEMENT YOUR FOOD INTAKE....
THE BEST THINGS IN LIFE ARE FREE.....
FAMILY....RELATIVES....FRIENDS....HEALTH and most importantly TIME....
YOU ARE MORE BLESSED THAN OTHERS...
WHEN YOU HAVE BOTH YOUR EYES SO YOU CAN CLEARLY SEE
OTHERS HAVE ONLY ONE...OTHERS ARE TOTALLY BLIND...
WHEN YOU HAVE BOTH YOUR EARS SO YOU CAN CLEARLY HEAR
OTHERS HAVE ONLY ONE...OTHERS ARE TOTALLY DEAF...
WHEN YOU HAVE BOTH YOUR HANDS SO YOU CAN HOLD THINGS WELL
OTHERS HAVE ONLY ONE...OTHERS HAVE NONE...
WHEN YOU HAVE BOTH YOUR FEET SO YOU CAN WALK EASILY
OTHERS HAVE ONE...OTHERS HAVE NONE..
WHEN YOU STILL HAVE YOUR PARENTS...
OTHERS HAVE ONE...OTHERS HAVE NONE...
WHEN YOU HAVE CHILDREN...
OTHERS HAVE ONE...OTHERS HAVE NONE...
WHEN YOU HAVE A FAMILY...
SOME HAVE NONE...OTHERS TOTALLY ORPHANED
WHEN YOU ARE LIVING IN THE PHILIPPINES...A DEMOCRATIC COUNTRY..
THE WEATHER NOT THAT EXTREMELY HOT NOR COLD..
WERE PLANTS AND TREES GROW EASILY
SURROUNDED BY SEAS FULL OF FISHES AND NATURAL RESOURCES
WHEN YOU ARE OLD AND STILL LIVING WITH YOUR CHILDREN
IN SOME COUNTRIES OLD PARENTS AND PEOPLE
ARE LEFT IN THE "HOME OF THE AGED NURSING FOUNDATION"
WHEN YOU STILL HAVE YOUR JOB...WORKING IN AN AIR-CONDITIONED
ROOM..JUST CONSIDER THE CONSTRUCTION WORKERS DOING THEIR
HARD LABOR JOBS UNDER THE HEAT OF THE SUN...IGNORING THE
DANGEROUS ELEMENTS CONFRONTING THEM....
COUNT YOUR BLESSINGS...COUNT THEM ONE BY ONE...
DON'T THINK OF SAYING ANY UNKIND WORD...
THINK OF PEOPLE WHO CAN'T SPEAK,
DON'T COMPLAIN ABOUT THE FOOD YOU EAT,
SOME HAVE NOTHING.
DON'T COMPLAIN ABOUT LIFE,
PAINT A SMILE ON YOUR FACE
AND THANK GOD YOU'RE ALIVE AND STILL AROUND
LIFE IS A GIFT......
LIVE IT WELL......
SAFETY 1ST
REPEAT BUSINESS 2ND
PRAY ALWAYS IT WORKS!!!
ATTENTION: FOREIGN ELECTRICAL MANUFACTURERS AND ELECTRICAL DISTRIBUTORS
OUR COMPANY WELCOMES ELECTRICAL FOREIGN SUPPLIER/MANUFACTURER/S
WHO WOULD LIKE TO OFFER THEIR PRODUCT LINE
HERE IN THE PHILIPPINES BUT ON A CONSIGNMENT BASIS ONLY,
MEANING PAYMENT WILL BE FOR A CERTAIN PERIOD...EXAMPLE SIX(6) MONTHS TO ONE(1) YEAR,
ALL THOSE THAT WILL NOT BE SOLD OR SLOW MOVING ITEMS WILL BE REPLACED
AND WE WILL JUST PAY FOR THOSE SOLD ITEMS
BY FAST MOVING ITEMS.......
YOUR COMPANY WILL BE SHOULDERING THE FORWARDING/FREIGHT COST
OR SHIPMENT COST...
WE WILL BE IN CHARGE OF STOCKAGE,MARKETING,SALES AND AFTER SALES CONCERNS..
CONTACT,EMAIL OR CALL US IF YOUR COMPANY IS INTERESTED WITH OUR OFFER...
BY THE WAY PAYMENT WILL BE BANK TO BANK...
YOUR BANK WILL BE COORDINATING WITH OUR LOCAL BANK HERE IN THE PHILIPPINES....
CALL/EMAIL US IF YOUR COMPANY IS INTERESTED ON OUR OFFER....
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