siren price bell or hooter

a  siren is a loud noise making device. Civil defense sirens are mounted in fixed locations and Most fire sirens are single tone and mechanically driven by electric motors with a rotor attached to the shaft.

Automatic Bell, siren or hooter .

Photo Credit  : http://www.perfectcorp.in/

• 25 different types of settings can be done
• Operating Voltage 12V Dc
• Can be used with your existing Bell or Siren (230V AC)
• 4 Push Buttons for Time Settings with LCD Display & LED Indicators
• Simple operation & settings, no computers required to program or maintain ringing schedule.
• No battery required to maintain clock and stored program.
• Weekly off: any day of the week can be selected as weekly off to cover all seasons of the year and special events of organization.
• Monthly off: any date of month can be selected as monthly off.
• Half day: Any day of week or any date of month can be selected as half day.
• Second Saturday: User selectable second Saturday option.
• Each bell can have different ringing duration.

Automatic school bell timer circuit is useful for:

• Schools Bells, Periods, Lunch Break, Exam Time
• Colleges – Automatic College Bell
• Institutions
• Factory Siren – End of Shift, Lunch or Recess, Tea Break

 Type of Industrial Siren:

• Control Rooms Siren
• Electrical Control Panels Hooters
• Power Stations – Hydroelectric, Thermal – Water Release Siren
• Industrial Warning Sirens & Industrial Electronic Hooter
• Factory Siren For Breaks & Factory Siren Indicating The End Of A Shift
• Siren for Mines
• Fire Siren
• Air Raid Siren
• Alert Systems
• Evacuation Siren
• Community Warning System
• Warning And Announcements
• Amusement Parks Siren
• Security System For Banks & Offices

Siren code –

Typical Fire Siren Code

For small fires       : No siren will be sounded.

For major fires       : Wailing type for 2 minutes. Siren shall be sounded three times for 15

                                Seconds with an interval of 5 seconds in between.

For disaster           : Same type of siren as in case of a major fire but the same will be sounded

                                three times at an interval of 2 minutes.

For all clear signals : Straight sound for two minutes.

Test                       : Straight sound for two minutes.

Major fire is declared by blowing wailing type fire siren for two minutes as soon as second fire turnout is taken.

Siren range and HP rating,

audible Diametrical Range	H.P.	Price Rs.
0.25 km.	1/8	30,000/-
0.50 km.	1/4	32,000/-
1.00 km.	1/2	35,000/-
1.50 kms.–	1	38,000/-
2.00 kms.–	1.5	40,000/-
3.50 kms.–	2	45,000/-
5.00 kms.–	3	50,000/-
8.00 kms.–	5	60,000/-
11.50 kms.	7.5	90,000/-
16.00 kms.	10	1,20,000/-

Note: Readers are requested to contact dealer or supplier. Blogger is not responsible for price.

transformer oil filtration format

Sara Construction & Engineer

Site: xxxxxxxxxxxxxxxxxxxxxx

Transformer oil filtration report

Job Ref: --------------------------

Report No  ………………                                                                    Date:……………………..

Transformer no-……………              …………… Substation no- ………………………………..

Oil Capacity …………….Transformer KVA …… ……Voltage……..        ..Sr. no …………

BDV in KV (before staring of filtration)…………

Filtration m/c capacity: ………..L/M, temperature setting: …………deg.C,                     

IR value HT side with 2500V megger…….M-ohm

Reading :

Sr	Date	Time	Oil temperature	Pressure (hg)	Heater current	BDV	Remarks
1
2
3
4
5

If any ……………….

Transformer is reedy for charge or not………………….

Supervisor----------                                                                                 Operator sign ------------

IR Value:

Transformer charge date and time----------------------------

Remarks …………………………………….

Testing engineer -----------

temperature setting : 65-75 Degree .C

environment slogan

पर्यावरण स्लोगन

environment slogan

1. साल में एक पेड़ लगायेंगे -- पर्यावरण बचायेंगे
2. कार पुलिंग में जायेंगे   -- पर्यावरण बचायेंगे
3. जुट बैग के साथ शोपिंग करेंगे -- पर्यावरण बचायेंगे
4. जितनी जरुरत उतनी बिजली जलाएंगे -- पर्यावरण बचायेंगे
5. पब्लिक ट्रांसपोर्ट अपनायेंगे -- पर्यावरण बचायेंगे
6. साइकिल रेस लगायेंगे -- पर्यावरण बचायेंगे
7. बगास नहीं जलाएंगे -- पर्यावरण बचायेंगे
8. वन की संरक्षा बढ़ाएंगे -- पर्यावरण बचायेंगे
9. वन संरक्षण अपनायेंगे -- पर्यावरण बचायेंगे
10. वन है तो ------हम हैं.
11. जल है तो ------हम हैं.
12. जल बचाओ --- पर्यावरण बचाओ
13. पेड़ लगाओ  --- पर्यावरण बचाओ 

Electrical Wiring and Test Certificate

House wiring is required for new construction and also for repairing / modification / up gradation in future. The completion of job should not be treated as horse play. In case of defects in electrical wires it can cause fire in house and may even take human life in some cases.

Wiring test certificate

How to ensure good electric works? 

1. A professional or experienced electrician should be hired for electrification job. All electric works and installations should comply with latest Indian Electricity Acts and Rules in all respects.
2. Make sure that electrician has calculated total load from various items that would be used in the house. Whether he lays wires that are capable of taking total load. 
3. All materials used in electrical fittings should be of approved and from a reputed manufacturer as per ISI specifications.
4. It is the observation that electricians are careless while putting right load bearing wires for a purpose and these wires get burnt at the movement when entire load is put on wires.

House Wiring tips as per ISI Specification

• The wiring should be carried out for power distribution systems with main and branch distribution boards to convenient centres distinguishing power circuit and lighting circuit separately. 
• All conductors should run, as far as possible along walls and ceilings, so as to be easily accessible and capable of being thoroughly inspected.

• We should avoid wiring on above ceiling.
• Medium pressure wiring and all associated apparatus should comply with specification.
• The numbers of points in light circuits should not exceed 10 or the total load on circuit should not exceed 800 watts.
• One circuit can be explained as one connection from electrical meter or main fuse circuit.
• For power wiring circuit the numbers of points in a circuit should not be more than 2 and the size of wire is 1.5 mm square copper only.
• Switch boards should be fitted at a height of approximately 1.2 meter.
• Horizontal run of wiring should be at a height of 3 meter.
• Earth wire should be 14 SWG in case of copper and 4 mm square in case of aluminium.
• Fuse wire should be connected to phase wire only.
• Connect a neutral link in neutral wire.
• Connect all switches in phase wire.
• Use 4 sqmm copper wire for power point as for AC and heater.
• Power wiring is not les than 2.5 sqmm copper wire.
• Follow colour code even in single phase, Power-R/Y/B colour, neutral-black, earthing-green.
• Inverter or emergency wire colour may be white /gray for clear identification.
• An ELCB is essential of 30mA rating for safety reason.
• Don’t forget to test ELCB to test monthly for working.
• Minimum size of earth wire for light circuit is 1 mm square for copper and 1.5 mm square for aluminium.
• One should avoid using aluminium wire for house wiring or where it is less than 6 sqmm due to breaking easily.
• Contractor or electrician should be asked to make test certificate.

What is the Electrical Installation Certificate?

BS 7671 (IEE Wiring Regulations): It is the safety Certificate which confirms that the electrical installation work to which it relates has been designed, constructed and tested. It is a legal requirement.

IS 732 (1989): Code of Practice for Electrical Wiring

The Electrical Installation Certificate is required for:
- New installations
- When a new circuit or circuits are installed to an existing installation
- The changing of a consumer unit (distribution board)
- When a circuit is altered and the alteration requires changing of the protective device.

After the initial verification, once the full inspection and testing procedure has been carried out, an Electrical Installation Certificate is completed.

To be valid the Electrical Installation Certificate must be accompanied by a: 
- the Schedule of Inspections
- the Schedule of Test Results.

The original document must be given to the "person ordering the work" and a copy should be kept by the electrician who completed the inspection and testing.

TYPICAL TEST CERTIFICATE 

 Dated: xx.xx.xxxx

Form of Completion Certificate

I/We certify that the installation detailed below has been completed  by me/us and tested and that to the best of my/our knowledge belief it complies with Indian Electricity Rules, 1956, Electrical installation at  (location)---------   -----------------------                                 _________________________, ----- Voltage and system of supply.

1. Particulars of work:

a) Internal Electrical Installation

No.                         Total Load                           Type or system of wiring

 i) Light point ii) Socket point

a) 5pin 5 Amp.

 b) 6 pin 15 Amp.

b) Others

2. Earthing: -

 i) Description of earthing electrode

 ii) Number of earth electrode

 iii) Size of main earth lead

3. Test results :

 a) Insulation resistance

i) Insulation resistance of the whole ystem of conductors to earth

ii) Insulation between the phase conductor and neutral                                Megaohms

Between Phase R and neutral                                                                    Megaohms

Between Phase Y and neutral                                                                    Megaohms

Between Phase B and neutral                                                                    Megaohms

iii) Insulation resistance between the phase conductors in case of polyphase supply.

Between Phase R and Phase Y                                                                   Megaohms

Between Phase Y and Phase B                                                                   Megaohms

Between Phase B and Phase R                                                                   Megaohms

b) Earth continuity test- Maximum resistance between any point of the earth continuity conductor including metal conduits and main earthing leads Ohm c) Earth Electrode Resistance Resistance of each earth electrode i)……………..Ohm ii)…………….Ohm iii)……………Ohm iv)……………Ohm

 Signature                                                                                                      Signature 

 Name of client rep.                                                                                   Name of the Supervisor

M/s-----                                                                                                    M/s-----(seal of company.)

Earth Electrode life

Earth Electrodes are selected on the basis of their resistance to corrosion. The other major faction in selection is cost parameter. The cost of a product is seen as the initial up front price, but the real cost is determined by the serviceable life of the ground rod.

Galvanized Iron pipe rods are one of the cheapest electrodes available. However, they are not the most cost effective since they have a relatively short service life.

Earth electrode life

Solid copper and stainless steel rods have a long service life. However, they are considerably more expensive than GI pipe  rods. In addition to this, solid copper rods are not suited to deep driving into hard ground due to the likelihood of bending.

copper bonded ground rods is recommend over copper clad electrodes because the copper coating will not slip or tear when driven nor will it crack if the rod is bent.

Copper bonded earth rods feature high resistance to corrosion, provide a low resistance path to ground and have good characteristics for deep driving.

The Stainless Steel Option:

It is important to note that certain soils and land fill areas may not be compatible with copper. In these situations, stainless steel represents a better option.

Stainless steel earth rods may also be an alternative, where structures or components, such as steel towers, poles or lead sheathed cables are in close proximity to an array of ground electrodes.

In these circumstances, consideration must be given to the consequence of galvanic corrosion. The high cost of stainless steel rods prohibits their widespread use.  

earth electrode life