Technical explanation of test transformer voltage withstand test


TQSB series oil-immersed test transformer

TQSB series oil-immersed test transformer is produced according to the "Test Transformer" standard of the Electromechanical Department after extensive improvements on the basis of the original similar products. The TQSB series of light AC and DC high voltage test transformers is based on the YDJ series of test transformers in accordance with national standards " JB∕T 9641-1999" has been improved and produced a new type of product.

Especially suitable for power system, industrial and mining enterprises, research departments and other high voltage electrical equipment, electrical components, insulation materials under high frequency or DC high voltage insulation strength test. It is an indispensable and important equipment in high pressure test.

TQSB series oil immersed test transformer product introduction

Test transformers are divided according to insulation and cooling conditions and can be divided into oil-immersed test transformers and dry test transformers.

The oil-immersed test transformer is applicable to the insulation strength test of various electrical products, electrical equipment, and insulation materials under the specified voltage, assess the insulation level of the product, find the insulation defect of the tested product and measure the ability to withstand overvoltage. It is a basic test equipment for a large number of users, such as power stations, power supply and distribution systems, and research institutes.

TQSB Series Oil Immersed Test Transformers Features

1, the product can be divided into: AC, AC and DC, AC series excitation, AC and DC series excitation;

2. The high-voltage coil is a cylindrical multi-layer tower, which is made of high-quality polyester enameled wire and high-voltage insulation material.

3, low voltage coil outside, the instrument coil is a separate winding, under normal circumstances is 100V.

4. The shell is octagonal and the test transformer above 10 kVA is equipped with a movable iron wheel. Oil immersion is an excellent choice for test transformers, featuring light weight, small size, easy movement, and good performance stability.

5. The TQSB series oil-immersed test transformer is a single-phase transformer. It is connected to the operating box (set) with the power frequency 220V or 380V power supply, and is adjusted to 0-200V or 0-400V by the auto-connected voltage regulator in the operating box. The initial set of windings of the test transformer, according to the principle of electromagnetic induction, can be used to test the high voltage winding of the transformer to obtain the high voltage required for the test.

6, this series of products with small size, light weight, compact structure, complete functions, versatility and ease of use and so on.

TQSB Series Oil-immersed Test Transformer Specification Model:

Input voltage: 200V/400V Output voltage: 5KV-200KV Rated capacity: 3KVA-500KVA







PE Plastic Rod

PE plastic Rod, full name is Polyethylene Rod.

Physical properties: PE plastic Rod is the most simple structure of the macromolecular organic compounds, the world's most widely used polymer materials, composed of ethylene polymerization, depending on the density is divided into high density polyethylene Rod, medium density polyethylene and low density polyethylene.


Classification of PE Rod
(1) LDPE Rod
Low density polyethylene Rod (also known as high pressure polyethylene Rod)

(2) LLDPE Rod
Linear low density polyethylene

(3) MDPE Rod
Medium density polyethylene

(4) HDPE Rod
High density polyethylene (also known as low pressure polyethylene)


(5) UHMWPE Rod

Ultra high molecular weight polyethylene

(6)Modified polyethylene Rod
Chlorinated polyethylene (CPE) and crosslinked polyethylene (PEX)

(7)Ethylene - ethylene copolymer
Ethylene/propylene copolymer (plastic), EVA, ethylene, ethylene butene copolymer - other olefins, such as octene POE, cyclic olefin copolymer, ethylene/unsaturated ester copolymer (EAA, EMAA, EEA, EMA, EMMA, EMAH).
Polyethylene, which has a molecular weight of 3 million to 6 million, is known as UHMWPE.

Ultra high molecular weight polyethylene Rod is very strong and can be used for body armor.


Applications:
1. Papermaking industry: suction box board, scraper, molding plate, bearing, gear;
2. Mining industry: charging barrel, abrasive and adhesive-resistant back lining for warehouses;
3. Chemical industry: acid pump, filter plate, worm gear, bearing;
4. Food industry: packing machinery parts, bottle guide, screw, wear plate, slide way, stud weld, roller and other transmission parts;
5. Textile industry:buffer board;
6. Food processing industry: chopping block, refrigerating plant;

7. Wharf: anti-collision board.


Advantages:
1. Acid and alkali resistance, resistance to organic solvents
2. Excellent electrical insulation and static resistance
3, Can still maintain a certain touness even at low temperature
4. Extremely high impact strength
5. Low friction coefficient
6. Non-toxic
7. Low water absorption
8.Lower density than any other thermoplastic plastics (<1g/cm3)

Disadvantages:
PE Plastic Rod have Weak mechanical property, air permeability, easy deformation, easy ageing, brittle, brittle less than PP, easy stress cracking, surface hardness, easy to scratch.
Difficult to print, in printing, surface discharge treatment, cannot electroplating, the surface has no luster.


Specification: the diameter of the PE rod can be produced from 2mm to 250mm. The conventional length is 1000mm, and the length is unlimited.
The thickness of PE Rod material can be produced from 0.3mm to 1.9mm, the normal width is 600mm, the width cannot exceed 1200mm, the length is not limited.
The thickness of plate can be produced from 2mm to 180mm, the usual specification of 2-10mm is 1000mm* 2000mm, and the commonly used specification of10-180mm is 600*1200mm.PE Rod can also be customized according to requirements, and the width cannot exceed 1200mm, and the length is not limited

Color: natural color is wax white, also can be customized black and color, the order of the color to order is 500KG.


Modified varieties: PE sheet/rod can be added to the fiberglass, copper powder and molybdenum disulphide to enhance the bar.
Add antistatic agent to the permanent antistatic electric bar, and the volume resistance value is between 6 to 9 power of 10.Add flame retardant to the flame retardant rod from UL 94V-0 to HB flame retardant grade, and other modification requirements are required to customize various additional properties according to the actual use of the customer.


Combustion characteristics:

Combustion situation: easy

Combustion flame status: molten drop, yellow lower blue

After the fire: continue to bur

Smell: the smell of wax burning

Product certification: most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.

Pe Plastic Rod,Polythene Rod,Polyethylene Pipe,Pe Rod Pipe

Dongguan Noegem Plastic Products Co.,Ltd , https://www.noegempLastic.com

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