20A Transformer Dc Winding Resistance Tester

Commodity: Synthetic Cryolite
Formula: Na3AlF6
M.W.: 209.95

Properties: The product is a white crystalline powder or a sandy-size granularity, and a pinkish crystalline powder or a sandy-size granularity as well. Sp.gr.2.953.01g/cm3, melting point about 1000centigrade, specific heat 1.056j/gcentigradeat 18100centigrade. Its slightly soluble in water, but insoluble in anhydrous hydrogen fluoride. The content of its crystal water will be decreased while the increasing of the molecular ratio, therefore its loss on ignition will be also decreased while the increasing of the molecular ratio. After the paste of synthetic cryolite with different molecular ratio dehydrates, the loss on ignition at 800centigrade will appear 10.34%, 6.22% and 2.56% when the molecular ratio reaches 1.74, 2.14 and 2.63 reactively.

Specifications:
Appearance white powder
F 52% min
Al 12% min
Na 33% max
SiO2 0.36% max
Fe2O3 0.08% max
CaO 0.5% max
P2O5 0.03% max
SO4 0.6% max
H2O 0.4% max
Loss on ignition 2 % max

Uses: Its mainly used as a flux in the aluminum smelting by fused-salt electrolysis; also an opalizer in the manufacture of enamel; an opacifier and auxiliary solvent of glass and enamel; an insecticide of crops; a flux in aluminum alloy casting; and in the production of ferrous alloy and effervescing steel; as well as a wear-resistant filler for resin and rubber-boned abrasive wheels.

Packing & Storage: In plastic coating woven bags with plastic film inside, 25kg,40kgs, 50kgs or 1000kgs net each, or as the requirement of clients.Stored: in a cool , ventilated, dry place.

We are exporter of Calcined Alumina.

According to different requirements, five series of products have been formed, including dry pressing, hot die casting, refractory, casting and setting, structural ceramic granulator, etc. It can be widely used in electronic equipment, structural ceramics, refractories, wear-resistant materials, polishing materials and other industries.

We are supplier and exporter of Hematite Powder.

Hematite Powder is a mineral, coloured black to steel. It is mined as a main of iron ore and used as a weighting agent in oil drilling. It is the mineral form of iron(III) oxide (Fe2O3). Fluids weighted with API Hematite Powder contain fewer solids by volume than, making higher mud fluids possible. API Grade Hematite Powder is applicable in all types of drilling fluids, including freshwater, seawater and oil-base muds. It is used as a density increasing product, used as a weighting agent and in the paint industry. Hematite is also a harder mineral than Barite so it is more resistant to particle size degradation.

High Density Hematite Powder API Grade -SG = 5.19 - 5.47 -Fe2O3 = 96.70% -Fe = 71.82% -SiO2 = 0.89% -Mesh Size (passing at 98%) = 325

Hematite Powder is a mineral, coloured black to steel. It is mined as a main of iron ore and used as a weighting agent in oil drilling. It is the mineral form of iron(III) oxide (Fe2O3). Fluids weighted with API Hematite Powder contain fewer solids by volume than, making higher mud fluids possible.

API Grade Hematite Powder is applicable in all types of drilling fluids, including freshwater, seawater and oil-base muds. It is used as a density increasing product, used as a weighting agent and in the paint industry. Hematite is also a harder mineral than Barite so it is more resistant to particle size degradation.

Dc resistance tachometer is an indispensable test project for transformer after handing in pick up overhaul and change sub-pick up switch. In general using traditional methods (bridge method and pressure drop method) measurement transformer winding group and dc resistance of large power inductance equipment is a time-consuming and time-consuming work. In order to change this situation shorten measurement time and reduce the work burden of test personnel huatian electric power developed Dc resistance rapid test instrument (hereinafter referred to as direct resistance instrument). Dc resistance tachometer adopts new power supply technology featuring stable performance rapid measurement compact volume easy to use High measurement precision and good data repeatability. Measurement transformer around the group and large power inductor dc resistance ideal equipment.

Dc resistance tachometer meets the requirements of DL/ t845.3-2004 with national standard gb6587-86 "general outline of environmental test of electronic measurement instrument" and gb6593-86 "test rules of electronic instrument quality".

Product Introduction
Dc resistance around the group of measurement transformer is a very important test project. In the "test regulations of electric power equipment" its order ranks the second in the transformer test project. The "regulations" stipulates that pick up overhaul minor repair change sub-pick up head position fault check and pre-test etc. should be done in transformer. Measurement transformer must have dc resistance around the group whose purpose is:

(1) check the welding of line and lead line around the group;

(2) check if the pick up touch is good;

(3) check whether there is a broken place around the group or leading line;

(4) check the correctness of the parallel branch whether there is a few parallel guide lines winding into the winding group or a few broken line situation;

(5) check whether there is a short circuit between layers and turns.

The interface design of Dc resistance rapid test instrument adopts microcomputer control big screen backlit Chinese liquid crystal screen show operation is simple show clear man-machine interaction interface friendly measurement process and instrument work state prompt is clear and sufficient no operation personnel need to memorize too many procedures; Huatian electric power adopts current source line-based compensation technology with stable test high measurement precision and fast speed improving measurement efficiency and reducing work intensity of operation personnel. Technically "four-end" measurement is adopted to eliminate the measurement error caused by line resistance with pick up contact. Overvoltage protection function can resist electric potential impact. Panel printer can print measurement results quickly (selected). Small size light weight easy to carry.

Dc resistance rapid test instrument is applicable to measurement with analysis of various electric transformer transformer winding group and other perceptual low resistance.

product names Dc resistance tachometer Transformer dc resistance test instrument Transformer direct resistance speed meter Transformer direct resistance quick test instrument Inductive load Dc resistance tachometer Inductive load dc resistance rapid test instrument Inductive load dc resistance test instrument Dc resistance rapid test instrument

Formalin is a solution of formaldehyde gas dissolved in water. Formaldehyde is a colorless, strong-smelling gas that is commonly used in a liquid form, as formalin, for various industrial applications. Here are some key points about formalin:
Chemical Composition: Formalin is typically a 37% aqueous (water-based) solution of formaldehyde. The remaining percentage is water.
Uses:
Preservation: Formalin is widely used as a preservative for biological specimens. It helps to prevent decay and decomposition, making it essential in laboratories, museums, and medical facilities for preserving tissues and specimens.
Disinfectant: It has antimicrobial properties, and as such, formalin solutions are sometimes used as disinfectants and biocides.
Textile Industry: Formalin can be used in the textile industry for wrinkle-resistant finishes on fabrics.
Health and Safety Concerns:
Formalin is a strong irritant and can be harmful if inhaled, ingested, or comes into contact with the skin.
Prolonged or repeated exposure to formaldehyde can cause respiratory irritation and may be associated with certain health risks.
Proper ventilation and personal protective equipment are recommended when working with formalin.
Regulation:
Due to its potential health risks, the use and handling of formalin are subject to regulations and guidelines in many countries. These regulations aim to ensure safe practices and protect workers and the environment.

Dc resistance around the group of measurement transformer is a very important test project. In the "test regulations of electric power equipment" its order ranks the second in the transformer test project. The "regulations" stipulates that pick up overhaul minor repair change sub-pick up head position fault check and pre-test etc. should be done in transformer. Measurement transformer must have dc resistance around the group whose purpose is:

(1) check the welding of line and lead line around the group;

(2) check if the pick up touch is good;

(3) check whether there is a broken place around the group or leading line;

(4) check the correctness of the parallel branch whether there is a few parallel guide lines winding into the winding group or a few broken line situation;

(5) check whether there is a short circuit between layers and turns.

The interface design of Dc resistance rapid test instrument adopts microcomputer control big screen backlit Chinese liquid crystal screen show operation is simple show clear man-machine interaction interface friendly measurement process and instrument work state prompt is clear and sufficient no operation personnel need to memorize too many procedures; Huatian electric power adopts current source line-based compensation technology with stable test high measurement precision and fast speed improving measurement efficiency and reducing work intensity of operation personnel. Technically "four-end" measurement is adopted to eliminate the measurement error caused by line resistance with pick up contact. Overvoltage protection function can resist electric potential impact. Panel printer can print measurement results quickly (selected). Small size light weight easy to carry.

Dc resistance rapid test instrument is applicable to measurement with analysis of various electric transformer transformer winding group and other perceptual low resistance.

Product Introduction
Direct resistance test apparatus is an indispensable experiment project for transformer after handing in pick up overhaul and sub-pick up switch. In general using traditional methods (bridge method and pressure drop method) measurement transformer winding group and dc resistance of large power inductance equipment is a time-consuming and time-consuming work. In order to change this situation shorten measurement time and reduce the work burden of test personnel huatian electric power developed Dc resistance rapid test instrument (hereinafter referred to as direct resistance instrument). It adopts new power supply technology featuring stable performance rapid measurement small volume easy to use high measurement precision and good data repeatability. Measurement transformer around the group and large power inductor dc resistance ideal equipment.

Direct resistance test apparatus meets the requirements of DL/ t845.3-2004 with national standard GB6587 "general outline of electronic measurement instrument environmental test" and GB6593 "test rules of electronic instrument quality".

product names Dc resistance tachometer Transformer dc resistance test instrument Transformer winding dc resistance test instrument Transformer direct resistance speed meter Transformer direct resistance quick test instrument Inductive load Dc resistance tachometer Inductive load dc resistance rapid test instrument Inductive load dc resistance test instrument Direct resistance test apparatus