China Standard Cable Pulley near me shop

Product Description

METAL OXIHU (WEST LAKE) DIS. SURGE ARRESTER

Polymer housed for outdoor application

Features

Better Electrical performance & reliability

Ease of Installation-Light weight & smaller size

Better Operating conditions

Explosion & shatter proof & less mechanical

damage to nearby equipments

Better performance in polluted environment

VanHangZhousm resistant

Free from Moisture ingress

Higher safety

Higher mechanical strength

Insensitive to UV radiation

High resistance to CZPT & Corona

Excellent Tracking resistance
Performance Data

System Voltage

Rated Voltage (kV):0.1-275

Nominal discharge current (kA)

High current capability (4/10us) kA

Energy Class :

Energy absorption Capability kJ/kV

Short Circuit (Pressure relief) kA:40

Standard in accordance with:IEC60099-4
Porcelain housed for outdoor application

 

For protection of transformer & switchgear.

Highly non-linear MOV.

Explosion Proof - Pressure Relief Design.

High energy handling capacity.

Glazed brown Porcelain Housing.

Corrosion proof Aluminum alloy metal flange.

Suitable for Ambient -400C to +550C.

manufactures effective surge protection device with the modern technology of highly non-linear Zinc

Oxide Varistor blocks and thus diverts natural lightning surge and switching surge to earth and simultaneously clip off

any follow on current. Our station class arresters are designed to provide maximum safety to personnel and sub-station

equipment even at the enormous short circuit duty. Research and Development is an ongoing process at Elektrolites

with the active collaboration of experts in the industry.
CONSTRUCTION & OPERATING PRINCIPLE

 

 Lightning Arrestors
 
11kV
 
 
 

No. DETAIL UNITS DATA
  Type   11kV gapless type metal oxide surge
arrester - Distribution class
1. Nominal  system  voltage kV 11
2. Highest system voltage kV 12
3. Basic Insulation Level  (BIL) kV 95
   
3.   Ratings and type of surge arrester
   
4. Specification to which surge arrester complies   IEC
60099-4
5. Rated voltage of surge arrester kV 10
6. Nominal, 8/20 µs, discharge current rating of
surge arrester
kA 10
7. Maximum continuous operating voltage of
surge arrester
kV 7.3
8. Gapless or gapped type metal-oxide surge
arrester
  Gapless
9. Material of insulation   High temperature vulcanised silicon
rubber
10. Rated frequency of surge arrester Hz 50
11. Design altitude of surge arrester (above sea
level)
m 1 400m
12. Design ambient temperature of surge arrester oC -1 to40
13. Specific creepage distance of surge arrester .mm/kV 25
  Automatic earth lead disconnectors
requirements
   
14. Automatic earth lead disconnectors to be fitted Yes/No YES

 

 
 

15. Corrosion protection of metal and alloy parts:
galvanising specification and/or stainless steel grade
  To SABS 763, 316
  Tests    
16. Previous type test results/certificate to be
provided with bid
Yes/No Yes
17. Routine test results/certificate to be provided
on delivery
Yes/No Yes
18. Drawing showing dimensions of the arrestor to
be provided with the bid
Yes/No Yes
19. Minimum 1 minute wet power frequency
withstand voltage of external insulation of surge arrester housing
kV 28
20. Maximum steep current impulse residual
voltage for a 10 kA, 1/20 µs, discharge current
kV 50
21. Maximum lightning impulse residual voltage
for a 10 kA, 8/20 µs, discharge current
kV 40
22. Lightning, 1,2/50 µs, impulse withstand level
of external insulation of surge arrester housing
kV 95
23. Line discharge class rating   1
24. Long duration current, 2 000 µs, impulse
withstand
A 250 A
25. High current, 4/10 µs, impulse withstand kA 100 kA
26. Automatic earth lead disconnector to be tested
in accordance with IEC 60099-4
Yes/No Yes

 

 
 
 
 
 
 
 
 
 
 
33kV
 
 
 
 

S/N TECHNICAL DETAILS UNITS DATA
1. Type   33kV gapless type metal
oxide surge arrester -
Distribution class
2. Nominal  system  voltage kV 33
3. Highest system voltage kV 36
4. Power frequency Hz 50
5. Basic Insulation Level  (BIL) kV 170
   
3.   Ratings and type of surge arrester
   
6. Specification to which surge arrester complies   IEC 60099
7. Rated voltage of surge arrester kV 29
8. Nominal, 8/20 µs, discharge current rating of surge arrester kA 10
9. Maximum continuous operating voltage of surge arrester kV 22
10. Gapless or gapped type metal-oxide surge arrester   Gapless
11. Insulation Material   Silicon rubber
12. Cantilever strength of surge arrester Nm 300
13. Rated frequency of surge arrester Hz 50
14. Design altitude of surge arrester (above sea level) m 1 400m
15. Design ambient temperature of surge arrester oC -1 to 40
16. Minimum phase-to-ground specific creepage distance of
surge arrester
.mm/kV 25
  Automatic earth lead disconnectors requirements    
17. Automatic earth lead disconnectors fitted Yes/No Yes
18. Corrosion protection of metal and alloy parts: galvanising   To  SABS 763, 316
         

 

 
 

  specification and/or stainless steel grade    
  Tests    
19. Previous Type Test reports/certificate  from recognized
authority to be provided with bid
Yes/No Yes
20. Minimum 1 minute wet power frequency withstand
voltage of external insulation of surge arrester housing
kV 70
21. Maximum steep current impulse residual voltage for a 10
kA, 1/20 µs, discharge current
kV 99.7
22. Maximum lightning impulse residual voltage for a 10 kA,
8/20 µs, discharge current
kV 91.8
23. Lightning, 1,2/50 µs, impulse withstand level of external
insulation of surge arrester housing
kV 170
24. Line discharge class rating Class 1
25. Long duration current, 2 000 µs, impulse withstand A 250 A
26. High current, 4/10 µs, impulse withstand kA 100 kA
27. Is the automatic earth lead disconnector tested in accordance
with IEC 60099-4?
Yes/No Yes

 

 
 
 
66kV
 
 
 
 

S/N TECHNICAL DETAILS UNITS DATA
1. Description   Station type lightning arrestor
complete with steel support structures.
2. Type   Zinc oxide gapless lightning
arrestor
  System parameters    
3. Nominal  system  voltage kV 66
4. Highest system voltage kV 72.5
5. Power frequency Hz 50
6. Type of system earthing   Effective/Non effective
7. Type of arrestor connection to system   Line to ground
   
3.   Ratings and type of surge arrester
   
8. Rated voltage of surge arrester kV rms 54
9. Nominal, 8/20 µs, discharge current rating of surge arrester kA peak 10
10. Maximum continuous operating voltage of surge arrester kV 43
11. Minimum 1 minute wet power frequency withstand voltage kVrms 140

 
 
151

 

 
 
 

  of external insulation of surge arrester housing    
12. Maximum steep current impulse residual voltage for a 2 kA,
30/60 µs, discharge current
kVpeak 104
13. Maximum lightning impulse residual voltage for a 10 kA, 8/20
µs, discharge current
kVpeak 127
14. Minimum lightning, 1,2/50 µs, impulse withstand level of
external insulation of surge arrester housing
  325
15. Line discharge class rating   2
16. Lighting arrestor counter, leakage current meter and their
accessories to be provided
Yes/No Yes
17. Gapless or gapped type metal-oxide surge arrester   Gapless
18. Insulation Material   Porcelain
19. Cantilever strength of surge arrester Nm 3000
20. Rated frequency of surge arrester Hz 50
21. Maximum angle from vertical at which surge arrester is fully
functional
Deg 45
22. Design altitude of surge arrester (above sea level) m 1400 m
23. Design ambient temperature of surge arrester oC -1 to 40
24. Humidity % 85
25. Specific phase-to-ground creepage of surge arrester .mm/kV 25
26. Corrosion protection of metal and alloy parts: galvanising
specification and/or stainless steel grade
  to SABS 763 or 316 stainless
steel
27. Previous type test results/certificate to be provided with bid Yes/No Yes
28. Design drawings showing dimensions including foundations
and brochures to be provided with bid
Yes/No Yes
29. Quality Assurance certification to be provided with the bid Yes/No Yes
30. Routine test results/certificate to be provided on delivery Yes/No Yes
31. Galvanized steel support structures complete with bolts &
washers to be provided on delivery
Yes/No Yes
32. Applicable standard   IEC60099

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
152

 
 
 
 
88Kv
 
 
 
 

S/N TECHNICAL DETAILS UNITS DATA
33. Description   Station type lightning arrestor
complete with steel support structures.
34. Type   Zinc oxide gapless lightning
arrestor
  System parameters    
35. Nominal  system  voltage kV 88
36. Highest system voltage kV 100
37. Power frequency Hz 50
38. Type of system earthing   Effective/Non effective
39. Type of arrestor connection to system   Line to ground
   
3.   Ratings and type of surge arrester
   
40. Rated voltage of surge arrester kV rms 84
41. Nominal, 8/20 µs, discharge current rating of surge arrester kA peak 10
42. Maximum continuous operating voltage of surge arrester kV 67
43. Minimum 1 minute wet power frequency withstand voltage
of external insulation of surge arrester housing
kVrms 185
  Maximum steep current impulse residual voltage for a 2 kA, kVpeak 188
  30/60 µs, discharge current    
45. Maximum lightning impulse residual voltage for a 10 kA, 8/20
µs, discharge current
kVpeak 218
46. Minimum lightning, 1,2/50 µs, impulse withstand level of
external insulation of surge arrester housing
  450
47. Line discharge class rating   2
48. Lighting arrestor counter, leakage current meter and their
accessories to be provided
Yes/No Yes
49. Gapless or gapped type metal-oxide surge arrester   Gapless
50. Insulation Material   Porcelain
51. Cantilever strength of surge arrester Nm 3000
52. Rated frequency of surge arrester Hz 50
53. Maximum angle from vertical at which surge arrester is fully
functional
Deg 45
54. Design altitude of surge arrester (above sea level) m 1400 m
55. Design ambient temperature of surge arrester oC -1 to 40
56. Humidity % 85
57. Specific phase-to-ground creepage of surge arrester .mm/kV 25
58. Corrosion protection of metal and alloy parts: galvanising
specification and/or stainless steel grade
  to SABS 763 or 316 stainless
steel
59. Previous type test results/certificate to be provided with bid Yes/No Yes
60. Design drawings showing dimensions including foundations
and brochures to be provided with bid
Yes/No Yes
61. Quality Assurance certification to be provided with the bid Yes/No Yes
62. Routine test results/certificate to be provided on delivery Yes/No Yes
63. Galvanized steel support structures complete with bolts &
washers to be provided on delivery
Yes/No Yes
64. Applicable standard   IEC60099

 
 
 
 
 
 
 
 
 

The importance of pulleys

A pulley is a wheel that rides on an axle or axle. The purpose of the pulley is to change the direction of the tensioning cable. The cable then transfers the power from the shaft to the pulley. This article explains the importance of pulleys and demonstrates several different uses for this machine. Also, see the Mechanical Advantages section below for the different types. let's start.
pulley

simple machine

A simple pulley machine is a device used to transfer energy. It consists of a wheel with flexible material on the rim and a rope or chain tied to the other end. Then lift the load using the force applied to the other end. The mechanical advantage of this system is one, as the force applied to the load is the same as the force on the pulley shaft.
A simple pulley machine has many benefits, from the ability to build pyramids to building modern buildings with it. Pulleys are also popular with children because they can perform simple tasks such as lifting toys onto a slide, sliding them off the slide, and lifting them up again. These activities, called "transportation" by child development theorists, allow them to learn about the physics of simple machines in the process.
The mechanism works by using cables to transmit force. The cable is attached to 1 side of the pulley and the other side is pulled by the user. Lift the load by pulling on 1 end and the other end of the rope. Simple pulley machines have many commercial and everyday applications, including helping move large objects. They can be fixed or movable, and can be a combination of both. The present invention is a great tool for any beginner or engineer.

axis

The axle wheel is the basic mechanical part that amplifies the force. It may have originally appeared as a tool to lift buckets or heavy objects from a well. Its operation is demonstrated by large and small gears attached to the same shaft. When applied to an object, the force on the large gear F overcomes the force W on the pinion R. The ratio of these 2 forces is called the mechanical advantage.
The ideal mechanical advantage of shaft pulleys is their radius ratio. A large radius will result in a higher mechanical advantage than a small radius. A pulley is a wheel through which a rope or belt runs. Often the wheels are interconnected with cables or belts for added mechanical advantage. The number of support ropes depends on the desired mechanical advantage of the pulley.
In the design of the axle wheel, the axle is the fulcrum and the outer edge is the handle. In simple terms, wheels and axle pulleys are improved versions of levers. The axle pulley moves the load farther than the lever and connects to the load at the center of the axle. Shaft pulleys are versatile and widely used in construction.

rope or belt

Ropes or pulleys are mechanical devices used to move large masses. The rope supports a large mass and can be moved easily by applying a force equal to 1 quarter of the mass to the loose end. Quad pulleys have 4 wheels and provide the mechanical advantage of 4 wheels. It is often used in factories and workshops. It is also a popular choice in the construction industry. If you are installing a pulley in your vehicle, be sure to follow these simple installation instructions.
First, you need to understand the basics of how a rope or pulley works. The machine consists of 1 or more wheels that rotate on an axle. The rope or belt is wrapped around the pulley and the force exerted on the rope is spread around the pulley. It then transfers the force from 1 end of the rope to the other. The pulley system also helps reduce the force required to lift objects.
Another common rope or pulley is the differential pulley. This is similar to a rope pulley, but consists of 2 pulleys of different radii. The tension in the 2 halves of the rope supports half the load that the live pulley should carry. These 2 different types of pulleys are often used together in composite pulley systems.
pulley

Mechanical advantage

The mechanical advantage is the ratio of the force used to move the load through the pulley system to the force applied. It has been used to measure the effectiveness of pulley systems, but it also requires assumptions about applied forces and weights. In a simple 1:1 pulley system, the weight lifting the weight is the same as the weight of the person pulling the weight. Adding mechanical advantage can help make up for the lack of manpower.
This advantage stems from the mechanical properties of simple machines. It requires less force and takes up less space and time to accomplish the same task. The same effect can also be achieved by applying less force at a distance. Furthermore, this effect is called the output force ratio. The basic working principle of a pulley system is a rope with a fixed point at 1 end. The movable pulley can be moved with very little force to achieve the desired effect.
The load can be moved through the vertical entry using a simple pulley system. It can use a simple "pulley block" system with a 2:1 "ladder frame" or a 4:1 with dual pulleys. This can be combined with another simple pulley system to create a compound pulley system. In this case, a simple pulley system is pulling another pulley, giving it a 9:1 mechanical advantage.

Commonly used

You've probably seen pulley systems in your kitchen or laundry room. You probably already use it to hang clothes on an adjustable clothesline. You may have seen motor pulleys in the kitchens of commercial buildings. You might even have seen 1 on a crane. These machines use a pulley system to help them lift heavy loads. The same goes for theaters. Some pulleys are attached to the sides of the stage, enabling the operator to move up and down the stage.
Pulley systems have many uses in the oil and petroleum industry. For example, in the oil and gas industry, pulley systems are used to lay cables. They are arranged in a pulley structure to provide mechanical energy. When the rope is running, 2 pulleys are hung on the derrick to facilitate smooth running. In these applications, pulleys are very effective in lifting heavy objects.
A pulley is a simple mechanical device that converts mechanical energy into motion. Unlike chains, pulleys are designed to transfer power from 1 location to another. The force required to lift an object with a pulley is the same as that required by hand. It takes the same amount of force to lift a bucket of water, but it's more comfortable to pull sideways. A bucket of water weighs the same as when lifted vertically, so it's easy to see how this mechanism can be useful.
pulley

Safety Notice

When using pulleys, you should take several safety precautions to keep your employees and other workers on the job site safe. In addition to wearing a hard hat, you should also wear gloves to protect your hands. Using pulleys can lead to a variety of injuries, so it's important to keep these precautions in mind before using pulleys. Here are some of the most common:
Pulleys are an important piece of equipment to have on hand when lifting heavy objects. Pulleys not only reduce the force required to lift an object, but also the direction of the force. This is especially important if you are lifting heavy objects, such as a lawn mower or motorcycle. Before starting, it is important to make sure that the anchoring system can support the full weight of the object you are lifting.
When using a pulley system, make sure the anchor points are adequate to support the load. Check with the pulley manufacturer to determine the weight it can safely lift. If the load is too large, composite pulleys can be used instead. For vertical lifts, you should use a sprocket set and wear personal protective equipment. Safety precautions when using pulleys are critical to worker health and safety.

China Standard Cable Pulley   near me shop China Standard Cable Pulley   near me shop