Product Category
Product Category
Single-crystal silicon differential pressure transmitter
The core of this device is a single-crystal silicon piezoresistive sensor, integrated with temperature compensation and a dual overload protection membrane structure, and it has anti-electromagnetic interference capabilities. Utilizing nano-single-crystal silicon material and a high-purity dual-beam suspension design, it achieves accuracy up to 0.075% FS, with a maximum range ratio of 200:1. It supports wide temperature range operation (-40°C to 120°C) and IP66/IP67 protection ratings [5]. It incorporates HART protocol, enabling parameter setting and communication via devices such as the HART375, making it suitable for complex industrial environments such as explosion-proof and sanitary applications.
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Since the year of 1958, the total sales quantity of “LD”brand toughened glass insulator achieved to a record over 100 millions pieces, it was 50% of the total domestic capacity and one sixth in the worldwide .
In the past 60 years, Nanjing Electric has supplied the “LD” glass insulators to many National Key Project such as:”Sanxia Dam project” ，“West-to-East Power Transmission Project”，“Anhui electricity power to east”，“Xinjiang Electricity Power Transmission Project”,”Shanxi Electricity Power Transmission Project” and “North-South Electricity Power Transmission Project”, also made great efforts to the “One belt , One road” and the global electricity development .Since the first EHV project of “Jing-Su”EHV transmission line was awarded to Nanjing Electric ,there were 24 EHV transmission projects were awarded to Nanjing Electric ,including 10 EHV AC line and 14 EHV DC lines. The total quantity of “LD”insulators from of Nanjing Electric supplied to EHV project achieved 4.46 Millions pieces.
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Nanjing Electric has advanced production equipment of various types of composite insulators at home and abroad to ensure product quality to meet customer requirements.The number of kneading machines,Open Mill machines,rubber extruder is over 20 sets. The capacity of rubber compounding is about 6000 tons and with more than 20 sets injection machines including 1100KN,550KN, 500KN, 330KN. The capacity of long rod composite insulator is over 1.3 million pieces(Convert into 110KV insulators),We have over 10 sets imported pressure welding equipment with 175/165/140 size and can completely meets the market requirements of all kings if composite insulators.
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The company mainly produces high-voltage suspension porcelain insulators, high-voltage line Post porcelain insulators, high-voltage line pin porcelain insulators, high-voltage porcelain cross-arm insulators and porcelain insulators for electrical appliances.In order to accelerate the development of the industry and continuously improve the product brand, the company continues to invest 25 million yuan, the expansion of the test hall and product technology center, and constantly introduce advanced technology and equipment, with reliable product quality, to provide high quality services for domestic and foreign customers.
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Hollow composite insulators are mainly used as key components for increasing creepage distance between high-voltage bushings such as transformer bushing, GIS bushing and wall bushing. Main features: Explosion proof, No explode and damage the surrounding equipment; Light product weight; Good seismic performance, Suitable for earthquake prone areas; High electrical performance and insulation level; Excellent UV resistance; Environmentally friendly materials, harmless to health and safety.
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Condition of Use
Ambient air temperature within the range of -40℃ to +40℃; Altitude above sea level not exceeding2,000m;
Frequency of the A.C. power supply being 50Hz or 60Hz;
Power frequency voltage applied continuously between the terminals of the arrester not exceeding its continuous operating voltage.
Maximum wind speed not exceeding 35m/s:
The earthquake intensity not exceeding 7 degrees.
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High voltage bushing is an important equipment element in power system, which takes on the function of current carrying and insulation when the high voltage line passes through the wall and equipment shell, and the connection between equipment or the grounding of equipment. Since 1958, the company took the lead in the trial production of capacity bushings in China, and after more than 50 years of production and manufacturing experience, it has produced more than 100,000 high-pressure bushings for the power transmission and transformation industry, accounting for about 50% of the total number of domestic online operation at present. On the basis of the original casing production technology, our company actively explores new materials and new technology of casing products, and in 2001, we successfully developed FRP reinforced dry capacitor core, and developed FRP reinforced dry casing series products by using this technology. At present, the company has oil paper capacity type, adhesive paper capacity type, glass fiber capacity type of three kinds of technology of high-pressure bushing production line.
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Main Frame
1: The main frame is constructed using 8MF-type open-section steel, with installation holes of 9.2mm diameter on the sides of the steel, spaced at intervals of 20mm and 100mm.
2: The functional compartments of the device are mutually isolated, with the compartments divided into functional unit compartments, busbar compartments, and cable compartments for the GCS-type low-voltage distribution cabinet. The functions of each compartment are independent of one another.
3: The horizontal main busbar is arranged in a horizontal configuration at the rear of the cabinet to enhance its resistance to electrodynamic forces.
The cable compartment design allows for convenient cable entry and exit from both the top and bottom.
Functional Units
The drawer height has a module of 160mm, and the unit circuit has a rated current of 400A or below.
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High-voltage switchgear refers to electrical products used in power generation, transmission, distribution, power conversion, and consumption in power systems to perform functions such as switching, control, or protection, with voltage ratings ranging from 3.6 kV to 550 kV. It primarily includes several major categories, such as high-voltage circuit breakers, high-voltage isolating switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices, and high-voltage switchgear cabinets.
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Displays temperature on-site, intuitive and convenient, safe and reliable, with a long service life;
The extractable-core thermometer allows for short-term maintenance or replacement of the core without shutting down the equipment.
A wide range of types available, including axial, radial, 135º, and universal, to meet various on-site installation requirements.
Product standards: JB/T8803-1998 / GB3836-83
Dial nominal diameter: 60, 100, 150
Accuracy class: 1.0, 1.5
Thermal response time: ≤40s
Protection rating: IP55
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1. Application
Suitable for temperature measurement and control in confined spaces that require bending. An indispensable temperature measurement device in industries such as chemical engineering, chemical fiber, and pharmaceuticals.
2. Main Technical Parameters
Accuracy Class: Class I or Class II
Nominal Diameter: Φ1
Bending Diameter: R≥5D
Nominal Pressure: Atmospheric Pressure
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Intelligent Power Monitoring Instrument
Features automatic zero stabilization, digital calibration, and power failure memory functions.
Features strong electromagnetic interference resistance, multiple wiring options, automatic fault diagnosis, programmable status settings, and high measurement accuracy.
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The three-valve assembly consists of three interconnected valves. Based on the function of each valve in the system, they can be classified as follows: the left valve is a high-pressure valve, the right valve is a low-pressure valve, and the middle valve is a balancing valve. The three-valve assembly is used in conjunction with a differential pressure transmitter to connect or disconnect the positive and negative pressure measurement chambers from the pressure tapping point, or to disconnect or connect the positive and negative pressure measurement chambers.
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The closing member of a globe valve is a plug-shaped valve disc with a flat or conical sealing surface. The valve disc moves in a straight line along the centerline of the valve seat. The valve stem can be of a lifting-rotating type, suitable for controlling the flow of various types of fluids, including air, water, steam, corrosive media, slurry, oil, liquid metal, and radioactive media. Therefore, this type of shut-off valve is highly suitable for use as a cutoff, regulating, or throttling valve.
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This product is suitable for household appliances, power tools, and various mobile electrical equipment with an AC rated voltage of 450/750V or below.
1. Production standards: JB8735.2-1998
2. Usage Characteristics
1. Rated voltage: 300/500V (YZ type), 450/750V (YC type);
2. The long-term allowable operating temperature of the conductor should not exceed 65°C;
3. “W” type cables have weather resistance and certain oil resistance, making them suitable for outdoor use or in environments exposed to oil contamination;
4. -ZR type cables have flame-retardant properties.
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1. Product Features and Applications: This product is suitable for AC rated voltage 0.6/1KV power devices and power transmission lines. Low smoke, halogen-free flame-retardant insulated and sheathed cables are environmentally friendly cables, suitable for high-rise buildings, railways, and other industries with special fire protection requirements.
2. Product Standards
Complies with GB12706.1-91, GB12706.2-91, equivalent to IEC502 standards.
Flame retardant characteristic tests comply with GB12666-90 standard.
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HERE YOU CAN FIND WHAT YOU WANT
Overseas Marketing Center:
Tel: 0086-02583147312
E-mail: yuwenwen@ld-cn.com
Address: No. 99 Xianxin East Road, NanjingEconomic and Technological Development Zone,Jiangsu Province
