能源及能源技术设备批发在 Qoovee市场
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Transformer substations KTP-pole, mast, kiosk, heat-insulated we will manufacture according to the completed questionnaires and a linear diagram. To calculate the cost, you need a completed questionnaire and a linear diagram to our e-mail.
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Electric motors AIR, 5AI, AM, AMU, AD, 5A asynchronous general industrial. On feet, combined, flanged from a warehouse in Tver. Available from 0.55 to 45 kW at various speeds. The price is negotiable. Call. Asynchronous electric motors AIR, A, 4A, 5A, AD, 7AVER with a squirrel-cage rotor are used in almost all industries in electric drives of various devices, mechanisms and machines that do not require speed control. They are used to drive ventilation equipment, pumps, compressor units, machine tools, escalators and many other machines.
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We carry out work on diagnostics, repair, assembly, full or partial installation, commissioning of control cabinets, telecommunication cabinets, server cabinets, electrical and electrical cabinets, etc. Installation work can be carried out both in accordance with the documentation developed by the manufacturer, and in accordance with the project documentation provided by the customer. We have many years of experience in using equipment from Rittal, DKS, Provento, Phoenix Contact, Weidmuller, Wago, Legrand, Schneider Electric, Lappkabel, Schroff, etc. All installed equipment is factory tested (technological run at least 72 hours). Experts will assist in calculating the equipment configuration based on the customer's technical specifications. Execution of works on APCS (development of RD, supply of control and management cabinets, SCADA, software, MO, AWP; installation; commissioning) on a turnkey basis Execution of work on APCS (development of RD, supply of control and control cabinets, SCADA, software, MO, AWP; installation; commissioning) turnkey. We provide services for the assembly and integrated supply of instrumentation equipment and installation materials. We offer our Customers: Consultations, selection of the necessary equipment according to the Customer's specifications, services for alternative replacement of equipment, direct delivery of devices from the warehouse and on order.
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Repair and modernization of rectifiers. The use of modern power devices and control systems allows: increase power, reduce pulsations, remote control, service. We will repair the rectifier according to your technical specification.
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Delivery and installation in the Tver region: Frequency converters ABB, ADT, Advanced Control, Bosch Rexroth, B&R; Automation, Danfoss, Delta Electronics, EasyDrive, Eaton, Emotron, ESQ, Eura Drives, Fuji Electric, Gefran, Grandrive Hitachi, Hyundai , IDS Drive, INNOVERT, INVT, Instart, Invertek Drives, KEB, Lenze, LS, Mitsubishi Electric, Omron, ONI, OptimusDrive, Parker, ProfiMaster, Prostar, Rockwell Automation, Santerno, Schneider Electric, Siemens, TECORP, Toshiba, Vacon, WEG, Yaskawa, ZIEHL-ABEGG, Vesper, Leader, Aries, OptimElectro, PolyusPlus, Ruselcom, Triol, Electrotex-IN. Soft starters ABB, Advanced Control, AuCom Electronics, Danfoss, Emotron, ESQ, Eura Drives, Instart, INVT, OptimusDrive, Prostar, Schneider Electric, Siemens, Toshiba, VT Drive, Vesper, Leader, Polyus, Plus OptimElectro, Electrotex-IN .
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Electrical installation includes not only the preparation of plans, diagrams, dismantling of old networks, but also directly laying wires. The next stage is marking: The places of installation of various equipment, sockets, switches, and the passage of wires are marked on the surfaces. Pipes are being laid. Insulators are mounted, plug connectors, switches are fixed. Wires are laid and fixed. Disconnectors, electrical receivers, distribution boxes, socket boxes, etc. are installed. All cables and wires are connected. The specialist checks the connections, tests the new power grid. The final stage is the installation itself. During it, sockets, chandeliers, lamps, spots, power consumers are installed. Private electricians of our company provide an integrated approach, performing work from the very beginning to the end, guaranteeing an excellent result.
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Industrial machine computer repair, Touch screen repair, Machine monitor repair, Machine control system repair, Screen repair, Touch screen repair, Touch screen repair, Touch screen repair, Touchscreen repair, Touch screen repair, Touch glass repair, graphic panel repair operator, repair of the operator's text panel, Repair of the operator panel illumination, Conclusion of an agreement Provision of a guarantee for the repair of an electronic device for 6 months. The cost of repairs ranges from 30% to 50% of the cost of new equipment.
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We offer to repair electronic faulty equipment. Component repair of industrial electronics is a way to ensure the constant operability of equipment and free up additional funds for the modernization of production!
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We offer to repair electronic faulty equipment. Component repair of industrial electronics is a way to ensure the constant operability of equipment and free up additional funds for the modernization of production!
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Diagnostics of failures, repair of industrial electronics Diagnostics of controller errors. Any errors and problems associated with the incorrect operation of industrial controllers and operator panels arise, oddly enough, either with completely old equipment or not working for a long time (the internal power battery has run out), or with a power failure and interruption of the algorithm cycle. Repair of modules, control units, controllers (PL.C) Repair of operator control panels (HMI), industrial monitors. Industrial computer repair (IPC). Repair of voltage stabilizers. Repair of industrial UPS (UPS - Uninterruptible Power Supply). Repair of industrial blowers. Repair of frequency converters (inverters). Repair of servomotors (servomotors). Repair of sensors: encoders (incremental, absolute), resolvers. Repair of servo converters (servo drives, servo amplifiers). Repair of soft starters (soft starters). Repair of industrial electronic boards (printed circuit boards, etc.). Repair of components of CNC machine tools (CPU). Repair of industrial power supplies.
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Diagnostics of failures, repair of industrial electronics Diagnostics of controller errors. Any errors and problems associated with the incorrect operation of industrial controllers and operator panels arise, oddly enough, either with completely old equipment or not working for a long time (the internal power battery has run out), or with a power failure and interruption of the algorithm cycle. Repair of modules, control units, controllers (PL.C) Repair of operator control panels (HMI), industrial monitors. Industrial computer repair (IPC). Repair of voltage stabilizers. Repair of industrial UPS (UPS - Uninterruptible Power Supply). Repair of industrial blowers. Repair of frequency converters (inverters). Repair of servomotors (servomotors). Repair of sensors: encoders (incremental, absolute), resolvers. Repair of servo converters (servo drives, servo amplifiers). Repair of soft starters (soft starters). Repair of industrial electronic boards (printed circuit boards, etc.). Repair of components of CNC machine tools (CPU). Repair of industrial power supplies.
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Diagnostics of failures, repair of industrial electronics. Diagnostics of controller errors. Any errors and problems associated with the incorrect operation of industrial controllers and operator panels arise, oddly enough, either with completely old equipment or not working for a long time (the internal power battery has run out), or with a power failure and interruption of the algorithm cycle. Repair of modules, control units, controllers (PL.C) Repair of operator control panels (HMI), industrial monitors. Industrial computer repair (IPC). Repair of voltage stabilizers. Repair of industrial UPS (UPS - Uninterruptible Power Supply). Repair of industrial blowers. Repair of frequency converters (inverters). Repair of servomotors (servomotors). Repair of sensors: encoders (incremental, absolute), resolvers. Repair of servo converters (servo drives, servo amplifiers). Repair of soft starters (soft starters). Repair of industrial electronic boards (printed circuit boards, etc.). Repair of components of CNC machine tools (CPU). Repair of industrial power supplies.
Hann Kuen Machinery And Hardware
Тайвань
USD
1000.0/个/件/只
SSD03 spindle unit is designed servo feeding with ball screw grade C5 and servo motor, the accuracy of spindle nose is strictly under 0.003mm and maximum drilling capacity up to 6mm (S45C).
This unit allows to perform all types of machining applications such as drilling, tapping, chamfering, reaming and countersinking.
Feature:
1. Standard 3-phase AC motor 0.4kW is included, optional maximum power up to 0.75kW
2. Belt driven at fixed speed and incorporate a timing, V or Poly-V belt
3. Feed rate is programmable and driven by preferable servo motor
4. Feeding is driven by HIWIN or PMI Grade C5 ball screw
5. Spindle taper ER16, JT1 and JT2 are available
6. Available for servo driven at variable speeds
7. OMRON proximity switch sensors and stand are furnished
8. AC Induction Motor protection IP 54
Weng Neil
Тайвань
USD
100.0/个/件/只
Product manual:
1. Suitable for flow and reflow soldering.
2. Standard type used to suppress lower-frequency, lower current signals.
3. The products contain no lead and also support lead-free soldering.
Application:
Removal of signal line noises of cellular phones, PCs, notebook PCs, TVs, TVs tuners, STBs, Audio players, DVDs, DSCs, Game machines, digital photo frames, PNDs, Car Navigation system, etc.
Ximeconn Technology Co., Ltd
Гонконг
USD
2.35 - 3.8/个/件/只
1.MATERIAL: 2. BODY:THERMOPLASTIC,UL94V-0. 3.CONTACT:COPPER ALLOY. 4.SPECIFICATIONS: 5. RATED CURRENT: POWER 20-70A AMP, SIGNAL 3AMP. 6. RATED VOLTAGE:500V DC.
Company contact number: 0755-23913852
Contact number of the person in charge: +86 13423810014
Ximeconn Technology Co., Ltd
Гонконг
USD
3.0/个/件/只
1.MATERIAL: 2. BODY:THERMOPLASTIC,UL94V-0. 3.CONTACT:COPPER ALLOY. 4.SPECIFICATIONS: 5. RATED CURRENT: POWER 20-70A AMP, SIGNAL 3AMP. 6. RATED VOLTAGE:500V DC.
Company contact number: 0755-23913852
Contact number of the person in charge: +86 13423810014
SA International
Китай
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“SA国际” -上海亚国际机电有限公司是SIBC集团，已在各个领域自2017年提供设备和技术选择的服务的一部分。 —— 建造。- 道路建设。- 冶金。- 采矿。- 化学工业。- 各种用途的生产线。 我们深受欧洲、美国、加拿大、马来西亚、印度、韩国、俄罗斯、泰国客户的信赖。 “ SA International ”公司在俄罗斯联邦境内的克拉斯诺达尔市设有官方代表处，为我们的客户简化合作、文件流转和清关。与我公司合作，您不仅可以对所提供设备的质量充满信心，还可以对售后服务充满信心。 我们提供： - 建筑行业的机械和设备，例如：沥青混凝土设备/设备 (ABZ)、混凝土搅拌设备/设备 (BRU / RBU)、具有自装载功能的自走式混凝土搅拌机、混凝土泵、瓷砖和砌块生产线等。 - 采矿设备：破碎机、筛网、筛网、传送带、泵等。 - 鳄鱼剪刀和金属压力机。 - 货运和轮式车辆：装载机、挖掘机、推土机。 - 存储设备。 - DES 和电动机。 - 化学试剂和成分。 此外，“SA International”是一家传送带制造商。 多年来与中国工厂合作，我们在客户中赢得了作为可靠合作伙伴和卓越质量评估中心的声誉。我们的经理将进行全面的市场评估，就所有新出现的问题为您提供建议，尽快提供完整的信息，工程师将监控整个生产过程，以最大限度地减少缺陷百分比，并对您的员工进行培训。 与我们合作的另一个优势是“SA International”的经理了解所有物流流程，提供有竞争力的价格和最短的交货时间。
Sphinix Engineering
Индия
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我们专门提供导管配件配件、PPR 配件和精密车削部件配件配件、黄铜紧固件，如螺母、螺栓、螺钉、垫圈、插件、黄铜锚、黄铜喷涂零件、黄铜销和所有类型的精密黄铜车削或根据客户的规格和图纸冲压部件。我们确保我们工厂生产的每个组件和紧固件都与世界任何地方的技术制造的最细微的细节相匹配。我们的目标是以最优惠的价格提供“零缺陷”的产品。如果您能向我们发送您对上述产品的所有要求，我们将不胜感激。
airmotor
Китай
USD
1.0/个/件/只
产品详情品牌名称：黎明电机产品名称：洗衣机电机型号：YJF相数：单相交流电压：定制频率：50 / 60Hz输出功率：90w保护功能：IP40认证：CCC，CE颜色：黑色外壳：冷板拉伸线材：全铜线轴承：滚珠轴承产地：中国浙江Sheng州用途：洗衣机电机名称：洗衣机洗衣机电机制造
Ozaday Agricultural Machinery
Istanbul, Турция
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Electric Motor and Tail Shaft Driven Spiral
Moselectrocom
Россия
USD
91.35/个/件/只
electric motor Vilmann Z803-2 1.5 kW 2800 rpm paws new-8.000 rubles electric motor Italy MS90L4 1.5 kW 1400 rpm feet new-8.000 rubles Busch / Siemens electric motor 1.5 kW 1425 rpm small-flange used (small) shaft 24mm-8.000rub electric motor Veg (Weg) 1.5 kW 2885 rpm flange / used paws (small) shaft 24mm-8.500rub Vem electric motor 4.0 kW 1425 rpm used paws (small) -14.000rub Vilmann electric motor 4.0 kW 2895 rpm new paws -14.500rub Siemens 5.5 kW 2915 rpm used flange shaft38mm-14.000 rubles Siemens 5.5 kW 1435 rpm used feet shaft 38mm-15.000 rubles Vem / Siemens / ABB 4.0 kW 1435 rpm used feet-14.000 rubles Siemens 7.5 kW 2910 rpm feet type132 shaft38mm-17.000 rubles Vilmann 7.5 kW 1440 rpm paws 38mm type132 used-13.500 rubles Siemens 3.0 kW 1435 rpm second-hand paws-10.000 rubles KSB / Siemens 3.0 kW 1425 rpm used flange -9.500 rubles Siemens 3.0 kW 1440 rpm new flange-12,000 rubles Mez / Siemens 3.0 kW 1425 rpm used paws-8.000 rpm USSR 3.0 kW 1410 rpm used paws -7,500 rubles ABB 5.5 kW 2885 rpm paws used (bearings need to be replaced) -13.000 rub Siemens 2.2 kW 2885 rpm paws shaft 24mm used - 7.000 rubles USSR 2.2 kW 2885 rpm paws shaft 22mm used (small / super condition!) - 6.500 rubles post-USSR 2.2 kW 2885 rpm paws shaft 22mm used - 6.000 rubles USSR (Uralelectro) 4.0 kW 1410 rpm used feet (bearings that fit) -8.000 rubles Mogilev 3.0 kW 2885 rpm new flange (stored for 15 years) -6.500 rubles Lafert (Spain) 2.2 kW 2895 rpm flange used (not enough) -10.000 rubles Uralelectro ADM 2.2 kW 1410 rpm paws almost new (connected, did not fit in power) -7.500 rubles
Moselectrocom
Россия
USD
205.54/个/件/只
electric motor EMC (Italy) MS132S1-2 5.5 kW 2910 rpm new paws - 18.000 rubles many other new and used motors are available call / specify
Moselectrocom
Россия
USD
194.12/个/件/只
electric motor Wilmann Z112M2-4 5.5 kW 1435 rpm new paws-17.000 rubles in the presence of many others .. call specify
Moselectrocom
Россия
USD
114.19/个/件/只
GDR (USSR) KMR100S4 electric motor 3.0 kW 1430 rpm in good condition-10.000 rubles Siemens / Mez 3.0 kW 1425 rpm second-hand paws-8.000₽ Siemens 3.0 kW1435 rpm second-hand paws - 10.000₽ Siemens 3.0 kW 1435 rpm new flange-12.000₽ Siemens / Vem 4.0 kW 1440 rpm second-hand paws - 14.000₽ USSR 3.0 kW 1410 rpm used flange-7.500₽ USSR 2.2 kW 940 rpm second-hand paws - 5.500₽ VEM 3.0 kW 1440 rpm paws new-12.000₽ ADM (uralelectro) 2.2 kW 1420 rpm paws -7.500₽ Siemens 5.5 kW 2885 rpm flange -14.000₽ Wilmann 7.5 kW 1440 rpm shares used-13.500₽ USSR 2.2 kW 2880 rpm used paws (ideal) -6.500₽ veg 1.5 kW 2885 rpm paws / flange used-8.500₽ USSR (Uralelectro) 4.0 kW 1410 rpm second-hand paws (not very bearings) -8.000₽ Mez / Siemens 5.5 kW 1435 rpm paws -12.000₽ Siemens 4.0 kW 1430 rpm paws on two shafts new-13.000₽ EMC (ITALY) type112 shaft 28mm 5.5 kW 1440 rpm paws new-17.000₽ EMC (ITALY) 7.5 kW 1440 rpm paws new-18.000₽ Brook (england) 5.5 kW 1450 rpm paws new-17.500₽ Wilmann 4.0 kW 2890 rpm paws new-14.000 rubles Wilmann 4.0 kW 2890 rpm second-hand paws - 12.000 rubles Wilmann 5.5 kW 2880 rpm paws new-18.000 rubles NO BIDDING! PRICE FINAL! Don't even try to bargain !!! there are many motors available, we call / check ...
USD
6000.0/个/件/只
应用：变压器内部的油主要起绝缘作用，此外，它们还具有抑制电晕放电和电弧的作用，还可以作为机器内部的制冷剂。这些油必须绝对清洁和干燥，以实现并保持最佳的绝缘性能和介电强度。这就是变压器油净化的需要。 ASSEN ZYD 变压器油净化器是变压器可靠性、性能和耐用性的关键。变压器的绝缘油必须不含水分、溶解的气体和随着油老化而积累的颗粒。甚至一些新油也可能需要加工以将其含量限制在可接受的水平。特点： 1. 对高效绝缘油处理厂的期望。 2、适用于大型电力变压器安装维修中的油处理、油抽真空和热油循环。 3. 操作简单无故障。 4、工艺参数在线测量和记录。处理后 水分 PPM 3 气体含量% 0.01 杂质尺寸 µm ≤ 1（无游离碳） 击穿电压 kV ≥ 75 IFT 达因 / cm ≥ 40 酸值 mgKOH / g ≤ 0.03 介电损耗因数 tan δ (90 °C) ≤ 0.001 ASSEN保证根据本规范提供的设备在正常使用和服务下不会出现材料和工艺缺陷，自发货之日起二十六 (26) 个月或启动后二十四 (24) 个月。系统。 ... ASSEN 在本保修条款下的义务仅限于修理或提供类似部件以更换在保修期内被证明有缺陷的任何部件。 1.我们根据您的要求定制机器。 2. 我们有超过 20 年的出口经验。 3. 我们以有竞争力的价格为客户提供高质量的产品。 4. 我们为客户提供优质的售后服务。 5.我们不满意，直到我们的客户满意。
Moselectrocom
Россия
USD
194.12/个/件/只
Brook electric motor (England) WDA112MB-4 112 5.5 kW 1450 rpm feet new shaft 28mm-17.000 rubles Electric motor Wilmann Z112M-2 4.0 kW 2890 rpm paws new-14.000 rubles electric motor Wilmann Z112M2-4 5.5 kW 1435 rpm shaft 28mm-17.000 rubles no bargaining! in the presence of many different motors call / specify
Moselectrocom
Россия
USD
159.86/个/件/只
electric motor Wilmann Z112M-2 4.0 kW 2890 rpm paws new shaft 28mm-14.000 rubles without bargaining! in the presence of a large number of motors! call to specify!
Pai-Hong Roll Up Door Co. Ltd.
Тайвань
USD
3000.0/个/件/只
P01854-3
Features
1. Reducer: Heavy duty machinery reducer.
2. Break System: Pull down the release lever, rolling door will close down.
3. Limited Switch: Combine with 2 limit switch for higher rolling door.
Specification:
Model D20
Horsepower 2HP/1.5kw
Poles 4
Voltage 3Ø-220V/380V
Ammeter 5.77A/3.34A
Load 1800KG/6”
Weight 69KG
Dimensions 730×290×470
DecelerationRatio 120
RPM 60HZ/14.2RPM
Driver Gear / Driven Gear
Double Gear 60×15T→60T
Single Gear 80×12T→46T
Sun Asia Aeration Int'l Co.Ltd
Тайвань
USD
3000.0/个/件/只
SUS316 Material
Bore 2" - 8"
High Head
Large Volume
Sea Water Use
Features:
Model CT-C pump, pump body, pump up water impeller and enter water access cap, quarry SUS316 cast materials, the axis is a SUS316 material, the mechanical axle seals VFA and VTSIC(Tungsten) material, corrosion-resistant, the stability is high, can give play to extremely high function and lift-span.
Application: Sea-farming, shipping.
Riken Electric Co., Ltd.
Тайвань
USD
100.0/个/件/只
Part Number : RL-800
Description: electrical and mechanical
Mount method: side mounted
Aux. contact: 2N/C
Model suitable: RAB-88T ~ 450T
Riken Electric Co. Ltd manufactures protection and controlling equipment for electrical application and electricity systems in Taiwan and is an ISO-9001:2000 Quality Management System approved company.
Riken Electric Co., Ltd.
Тайвань
USD
100.0/个/件/只
Part Number : RA1-T11
Mount method: upper mounted
Aux. contact structure:
N/O :1
N/C: 1
Model suitable: RAB-A12 ~ A36
Riken Electric Co. Ltd manufactures protection and controlling equipment for electrical application and electricity systems in Taiwan and is an ISO-9001:2000 Quality Management System approved company.
Riken Electric Co., Ltd.
Тайвань
USD
100.0/个/件/只
Model: RAB-88T
Capacity:
Three phase 220 V HP : 35 / KW : 26
Three phase 380/440 V HP : 70 / KW : 50
Auxiliary contact structure: 2a 2b
Enclosure dimension: L 302 / W 200/ H163
Riken Electric Co. Ltd manufactures protection and controlling equipment for electrical application and electricity systems in Taiwan and is an ISO-9001:2000 Quality Management System approved company.
Moselectrocom
Россия
USD
205.54/个/件/只
electric motor new EMC Italy 7.5 kW 1440 rpm paws -18.000 rubles
many other motors Siemens VEM ABB WEG ADM are available
the prices are high and there is no bargaining !!! write / call / specify ...
Moscow vatutinki kaluzhskoe highway
Jinwell Technology
Тайвань
USD
300.0/个/件/只
1. Type: SQH-10
2. W: 10
3. RESISTANCERANGEΩ:
SQH: 0.5Ω~100 Ω
MO+SQH: 101Ω~50KΩ
4. DIMENSIONS(mm):
L±2: 48.0
H±1: 10.0
W±1: 10.0
S±1: 33
H±1: 21
P1±1: 12
P2±1: 6
P3±1: 8.0
P4±1: 3.0
D: 4
Founded in 1986, Jinwell manufactures high power resistors and automotive LED lights. In order to build up the long relationship to Customer and opening our service to customers, we always bring the best service to reach Customer demands.
SENSKON TECHNOLOGIES
Индия
Specify the price
Product Specification
Rated Current
400A-8000A
Certification
CCS,CCC,IEC,GOST
Breaking Capacity
50kA 125kA
Application
LV Distribution
Voltage
380V-690V
Phase
3/4
Frequency
50Hz/60Hz
Dimension
As per rating
Degree Of Protection
IP 40
Country of Origin
Made in India
Minimum Order Quantity
1 Piece
SENSKON TECHNOLOGIES
Индия
USD
90.0 - 15000.0/个/件/只
Off Grid Inverter - 500W To 500 KW
Be the first to review this product
98.3% Max efficiency
Wide voltage range and low start-up voltage
Friendly and adaptable connection to the grid
Super high frequency switching technology
Precise MPPT/PWM algorithm
Compact and lightweight
WiFi/GPRS Real time monitoring
Safe for your home with comprehensive protection features such as short-circuit, reverse polarity, anti-islanding, residual current detection
Inbuilt MPPT charge controller extracts upto 30% more power from Panels
User friendly Informative LCD Display
SENSKON TECHNOLOGIES
Индия
USD
95.0 - 9800.0/个/件/只
Grid Tie Inverter - 500W to 500 KW
Be the first to review this product
98.3% Max efficiency
Wide voltage range and low start-up voltage
Friendly and adaptable connection to the grid
Super high frequency switching technology
Precise MPPT algorithm
Compact and lightweight
WiFi/GPRS Real time monitoring
Safe for your home with comprehensive protection features such as short-circuit, reverse polarity, anti-islanding, residual current detection
Inbuilt MPPT charge controller extracts upto 30% more power from Panels
User friendly Informative LCD Display
LLC PK "Aurora Electro"
Россия
Specify the price
The transformer is designed to power a 6-zone electric ferrite roasting furnace with a vertical load with a maximum power of 84 kVA and a phase voltage of 150V; 200V; 250 V.
Qoovee——批发贸易平台。这里您可以找到任何领域的批发商品，包括商品能源及能源技术设备。在Qoovee拥有海量批发商品供您选择。这里您可以找到来自中国、吉尔吉斯斯坦、哈萨克斯坦、俄罗斯、乌克兰、土耳其、欧洲各国、非洲、拉丁美洲等国用于能源及能源技术设备的批发商品。批发商基地还在不断壮大: 现在在Qoovee已有来自80个国家，近600个行业的20000名供应商。批发商品的种类实时更新并一直有效。所有能源及能源技术设备的批发供应商都期待您的购买和合作！
