Ac Resonant Test System For Cvt

Commodity: Sodium Hydrosulfite
Other name: Synonyms: Sodium Hydrosulphite; Sodium Dithionite; Dithionous acid, Disodium salt; Sodium Sulfoxylate
CAS No.: 7775-14-6
Molecular Weight: 174.10
Chemical Formula: Na2S2O4

Product Description
Appearance: White, crystalline powder.

Product Feature
Odor: Slight irritative.
Specific Gravity: Unavailable
Solubility: Soluble in water.
Density: 2.19
pH: 6-7
pH Test-Method: PH test paper.
% Volatiles by volume @ 21C (70F): 0
Boiling Point: Not applicable.
Melting Point: >300 C Decomposes.
Vapor Pressure (mm Hg): No information found.
Bulk Density: ~0.9
Evaporation Rate (BuAc=1): No information found.

Application
1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching .
2. bleaching paper pulps , especially mechanical pulps, its the most fittable bleaching agent in pulps.
3. bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products,
4. in mineral, the compound of thiourea and other sulphides.
5. as reducing agent in chemical industry.
6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms.

Packaging 50kg/100kg net in iron drums with double PVC bags

Product Specification/Models
NDEX 90%, 88%, 85%. FOOD ADDITIVE
Na2S2O4, 90%, 88%, 85%, Fe 20ppm ZincZnOther heavy metal
calculated as Pb, 1ppm
Water Insolubles05%
Shelf Life(month)12

Commodity: Sodium Bisulfite
Molecular Formula: NaHSO3
Molecular Weight: 104.06

Properties: White monoclinic crystalline powder with sulfur dioxide odor; relative density: 1.49; very easily soluble in water; can be decomposed when heated; slightly soluble in ethanol; aqueous solution is acidic; has strong reducing property; can be oxidized in the air or loose sulfur dioxide.

Quality Standard: HG/T3492-80
Technical Indicator High-purity grade Acrylic grade Food grade Refined grade Industrial grade 1
NaHSO3 % 99.5
Insol. in water % 0.003, 0.005, 0.03, 0.04, 0.05
Chloride(Cl) % 0.003, 0.004
Iron(Fe) % 0.001 0.002 0.005
Heavy metal(Pb) 0.001
Arsenic(As) % 0.0001
Clarity test Qualified

Use: It is used in the bleaching of cotton textiles; as reducing agent in dyes, paper-making, leather, chemical synthesis; in the manufacture of pharmaceutical intermediates, developer, food bleacher, antiseptic and anti-oxidants.

Packing: In PP woven bag lined with PE bag; paper-plastic composite bag, and kraft paper bag etc.

Net wt.: 25/50/1000 kgs/bag or upon clients' request.

Commodity: Ammonium bicarbonate Food grade
Molecular formula:NH4HCO3
Molecule Weight: 79.05
H.S code: 2836994000
CAS: 1066-33-7

Product Physical Properties
WHITE POWDER CRYSTAL, SPECIFIC GRAVITY IS 1.586, IT CANDISSOLVE IN WATER, BUT CANT DISSOLVE IN ALCOHOL AND ACETINE.

Specifications:
Appearance: white free-flowing crystalline powder without agglomeration
Purity as Ammonium Bicarbonate ,% by weight 99.5 (minimum)
Chloride (as Cl), % by weight 0.20(maximum)
Sulphates (as SO4),% by weight 0.10(maximum)
Iron (as Fe), % by weight 0.004(maximum)
Nonvolatile matter, % by weight 0.10(maximum)
Heavy metals (as Pb), ppm 2.50(maximum)
Copper (as Cu), ppm 5.0(maximum)
Arsenic (as As), ppm 0.6(maximum)
Tarry matter To pass test
Oil Content Less than 10 ppm
Melamine Content NIL

USAGE
BAKING FOODS SUCH AS CRISP CAKE, BISCUIT ETC. IN ADDITION, ITALSO WIDELY USED IN CHEMICAL FIELD SUCH AS FLOUR BRIGHTENING AGENT,RARE EARTH DEEP PROCESSING, MEDICINE MIDBODY, PLASTICS PROCESSING,ELECTRONIC ELEMENT ETC.

PACKING
OUTSIDE IS WEAVE BAG OR PAPER BAG, INSIDE IS FOOD PLASTICSBAG, 25KG/BAG. THE PACKING ALSO CAN ACCORDING TO CONSUMERS REQUEST.

STORAGE
Stored in a cool, ventilated, dry place.

Overview

This device is designed and manufactured for 35kV cable AC withstand voltage test. The reactor is individually designed for multiple units, which can not only meet the test conditions of high-voltage and low-current equipment, but also meet the low-voltage AC withstand voltage test requirements of 10kV cables.

The special AC resonance test system for cables adopts the method of adjusting the frequency of the power supply, so that the reactor and the capacitor under test can achieve resonance, and the high voltage and large current can be obtained on the test product. It is a new method of current high voltage test and The trend has been widely used at home and abroad.

The AC resonance test system uses a dedicated SPWM digital waveform generator chip with a frequency resolution of 16 bits, and the frequency fineness can reach 0.1 Hz at 20 to 300 Hz; it adopts an orthogonal non-synchronous fixed carrier modulation method to ensure that the entire frequency The output waveform is good in the interval; the advanced IPM module is used in the power part to ensure the stability and safety of the instrument under the minimum weight.

The test system consists of a frequency and voltage regulation power supply, an excitation transformer, a reactor, and a capacitor divider.

Technical index

1. the resonant excitation power supply only needs 1/Q of test capacity, which is 1/10-1/30 of common test unit and reduces the system weight and volume greatly.

2. Rated voltage:

1.108kV meeting the alternating current withstand voltage test for 35kV cable;

2.Waveform distortion rate of output voltage should be less than 1.0

3.The permissible continuous working time is to work for 5 minutes at one time under rated condition.

4.Quality factor of unit itself: Q 50



Advantage

1.The power capacity needed is reduced greatly.

2.The weight and volume of equipment is reduced greatly.

3.The waveform of output voltage is improved.

4.The large short-circuit current is prevented from burning fault point.



Feature:

1. A large number of cables with voltage levels of 35kV and below are used, and the test workload is large, so this type of withstand voltage test device is small in size and light in weight, and a portable cable withstand voltage test system was born;

2. This system requires that the weight of the parts that a single person can move on-site does not exceed 30kg, and the weight of the parts that two people can move on-site does not exceed 60kg, which is suitable for on-site transportation;

3. The power supply adopts 220V single-phase power supply or 380V single-phase power supply, which is convenient for on-site power supply;

4. The reactor part is made of dry epoxy casting, which is beautiful and reliable, suitable for the requirements of various cables;

5. The withstand voltage test of 110kV and above cables adopts oil-immersed reactors.

Apple peeling machine ,Apple washing peeling remove seeds half cutting in one machine which also can process pear and other same kind fruits vegetables.
Number of valve openings: determined by the user
Production capacity: 45-50 pcs/min, 16 plugs (one circle)
Peeling thickness: 1.1-1.3mm adjustable
Suitable fruit diameter: 65-120mm
Denucleation diameter: 22mm (can be determined according to user requirements)
Peel removal rate: â?¥ 95 �°/�° (normal apples, non rotten fruits, dry scars, irregular fruits.) Excluding both ends.
Total power of equipment: 2.25kw
Equipment specifications: host; 1800 * 1050 * 2100mm
auxiliary equipment 3300 * 1200 * 900mm
Equipment weight : 850kg
Equipment gas consumption: 0.65 m3/min
Advanced technology : samll area,efficient,sanitary,easy operate and clean,saving labor costs .

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We professional manufacture of ethanol alcohol equipment ,DDGS ,equipment . The material can be
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We professional manufacture of ethanol alcohol equipment ,DDGS ,equipment ,vine gare equipment in China. The material can be
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