T-Grid

SANDI Off Grid Inverter is the one of the most advanced technology DC to AC conversion products in the world, it's suitable use for areas without electricity, providing a complete power solution for strict demand applications. With SVPWM technology it has high conversion efficiency, high instantaneous power and low losses power output pure sine wave, applying to capacitive, inductive and nonlinear mixed-load, with superior load capacity, perfect protection function: overload, short circuit, low/over battery voltage, improper operation etc, which wonâ??t cause mechanical failures. The inverter can supply AC power to all kinds of electric equipment, air conditioners, electric motors, refrigerators, fluorescent lights, televisions, electric fans and other industrial power supply. 1, The core components are all imported, adopting the sixth generation IPM module from Mitsubishi, which has stable performance, long service life, strong protection functions and convenient replacement and maintenance. 2, Adopt the central processor DSP28335 chip from American TI Company, respond quickly and accurately, and provide stable and clean power for the load to provide protection. 3, The whole machine adopts modular design and plug-in design, which is convenient for maintenance and reduces the hidden cost of machine failure to repair. 4, Two kinds of start mode: Reduction Voltage Start and Variable Frequency Start. Customers can set start mode according to the type of their load. This function is very convenient for users and also reduce frequency converter's usage, which reduced the cost of equipment investment, easy to connect wires and control. 5, The output voltage can be set between -40 % to +20 % of rated voltage. And the output voltage is very accuracy + 1%. 6, The DC input voltage range can be set. Over-voltage point, under-voltage point, over-voltage recovery point, under-voltage recovery point all can be setting via the LCD panel. 7, Output AC Power is suitable for all types of electrical equipment, CNC machines, electric tools, motors, pump and air conditioner etc. It has higher efficiency and higher capability of driving load. 8, Humanized safety design, using isolation transformer design, input and output are completely electrically isolated, input and output are equipped with circuit breakers, which saving costs for the user and easy to installation, the electric parts are completely closed to prevent electric shock. 9, Wide input voltage can be set according to customers requirement. Input voltage range can be selected from 100-300V, 200-500V or 500-850V, suitable for solar/wind system without backup batteries, it can save many cost and maximization use the solar. 10, Powerful data display function. LCD + LED display, can display input and output voltage, current, KWH, fault display, convenient for customers to quickly find faults and guide maintenance.

Product description Electrical equipments in modern industrial, commercial and residential users are more sensitive to power quality, and have a higher requirement of quality of power supply. Currently, harmonics,electromagnetic interference, power factor reduction have been tied to the three hazard of the power system. When it is interfered or contaminated, grid power quality can t reach the national standards, so it has to be targeted on the grid power quality improvement. To understand the actual situation of power quality, you must have the appropriate equipment to test and analysis the actual situation. Counter the domestic condition, our company developed the professional power quality analysis instrument, which is suitable for the country. 3 phase handheld power quality analyzer Technical index 1. Input characteristics

Product description Electrical equipments in modern industrial, commercial and residential users are more sensitive to power quality, and have a higher requirement of quality of power supply. Currently, harmonics,electromagnetic interference, power factor reduction have been tied to the three hazard of the power system. When it is interfered or contaminated, grid power quality can t reach the national standards, so it has to be targeted on the grid power quality improvement. To understand the actual situation of power quality, you must have the appropriate equipment to test and analysis the actual situation. Counter the domestic condition, our company developed the professional power quality analysis instrument, which is suitable for the country. 3 phase handheld power quality analyzer Technical index Input characteristics Voltage measuring range 0 200V 800V, automatic cutting gear. Current measurement range Clamp transformers three types 5A 25A standard 100A 500A optional 400A 2000A optional Phase angle measuring range 0 359.99 Frequency measurement range: 45 55Hz. Voltage channels three channel UA UB UC Current channels three channel IA IB IC Maximum harmonic analysis times 63 times. Maximum continuous storage period in 1 minute interval: 18 months. Accuracy Measurement of electrical parameters section: Voltage 0.2% Frequency 0.01Hz Current, power 0.5% Phase 0.2 Power quality section Fundamental voltage tolerance 0.5% F.S. Fundamental current tolerance 1% F.S. Phase between fundamental voltage and current measurement erro0.2

Modulating Capacity Transformer Special Transformer Modulating capacity transformer is one kind of distribution transformers, which has two capacities ( one is small , another one is large) and can adjust according to the load size. The changing of high voltage winding connection mode, the conversion of low voltage winding parallel series and the adjustment of every connection are finished by special no excitation modulating capacity switch. Meanwhile, when large capacity is adjusted to small capacity, no-load loss and no-load current will be reduced because the increasing of low voltage turns and the decrease of coreâ??s magnetic flux density reduce unit loss of silicon steel, thus reaches the purpose of lowing loss and energy-saving. Double voltage distribution transformer has one small and one large voltage, and can adjust according to electric grids voltage. The conversion of high voltage winding parallel series and the adjustment of every connection are finished by special no excitation modulating capacity switch.   General introduction  SZ11-T load modulating capacity transformer is one kind of distribution transformers with new technology and energy-saving. It has two kinds rated capacity, one is small and another one is large, and the operation mode of these two capacity can be automatically converted which solves the problem of transformersâ?? large loss caused by relatively large changes of 10 kV distribution grids seasonable magnitude, and also solve the operational maintain problem because capacity must be adjusted by hand after the outage of no-load modulating capacity transformer power . Modulating capacity transformer not only suits rural electric grids which seasonable magnitude changes are relatively large, but also suits downtown, development zones, industrial zones and other distribution work area where circadian load changes are obvious.  Working principle Load modulating capacity transformer is adjusted by the intelligent controller externally modulating- switches, thus completing the convert process of high capacity and low capacity, more details as below: intelligent controller determines the current load size by detecting transformers voltage and current of low voltage side; determines related constraints based on the capacity setting value; if meet the setting conditions, intelligent controller will issue the corresponding control commands to load modulating capacity switch, then modulating capacity switch can finish the star ,angle change and the parallel series convert of transformer s inner high voltage winding, low voltage winding; completes the process of capacity adjustment under conditions with power.

ANEVS(F) series battery simulators take bidirectional DC power supply with high precision and high dynamic response as the core, to simulate the external characteristics of battery based on the accurate modeling of lithium manganese oxide, lithium cobalt oxide, lithium iron phosphate, lead acid, nickel metal hydride batteries. ANEVS series battery simulators are professional equipment specially designed and developed for new energy vehicle power test benches, high control accuracy and fast dynamic response, widely used in testing of motor controllers, motors, and new energy vehicle powertrain. The performance of the ANEVS series battery simulator is better than GB/T 18488 Drive motor system for electric vehicles - Specification and experimental conditions, and GB/T 29307-2012 The reliability test methods of drive motor system for electric vehicles. ANEVS(F) series battery simulator adopts high-frequency PWM rectification and bidirectional DCDC conversion, FPGA digital control, seamless switching between forward and reverse, automatic bidirectional operation, energy feedback to the grid at full power; advanced digital control, ultra-high control accuracy, fast response, wide output voltage range; compared with conventional bidirectional power supply, it can achieve full range of high-precision output from 0V to full scale, up to 2000V, and the maximum power of a single machine can reach 1MW. Abundant programming and testing functions, suitable for a variety of applications with different software; to simulate battery output characteristics and battery charge/discharge characteristics; providing 5 common types of battery models. Users can choose the type of battery, the number of battery cells in series, the number of cells in parallel and SOC parameters, so as to simulate the battery output characteristics and charge/discharge characteristics, including change to internal resistance during charging/discharging. In addition, custom battery model output is available.