Cabling in power substations is very important due to the fact that they are the longest parts of a system and therefore act as efficient antennas that pickup and or radiate noise. In HV substations, there are different kinds of conductors... Read more

The post The problem of induced voltages in control cables in high voltage substations appeared first on EEP - Electrical Engineering Portal.

This technical article discusses twelve different methods for laying high voltage cables. Out of the ten, four are deemed conventional and eight are deemed progressive. Many various utilities and companies all across the globe are making use of them, though... Read more

The post Twelve high voltage cable construction techniques used worldwide appeared first on EEP - Electrical Engineering Portal.

High voltage power substations are complex networks of power and control connections, represented by design elements like- Single Line Diagrams, layout and block diagrams, schematics, logic diagrams, schedules, and so many more. Wiring diagrams and schematics, in a sense, are... Read more

The post Tricks in designing and analyzing schematics and diagrams of high voltage substations appeared first on EEP - Electrical Engineering Portal.

LG RESU16H Prime + Solis S6-EH3P10K-H-AU (AS4777-2 2020)

Part of the latest generation 3 series in the LG RESU line-up. The RESU16H Prime is the largest lithium-ion residential battery storage in the world, supplying a total energy capacity of 16 kWh. The latest RESU16H Prime provides an all-new continuous power rating of 7 kW and a peak rating of 11 kW. This increased peak power enables homeowners to backup high-surge power appliance loads like air-conditioning units and pumps.

The 16 kWh battery features industry-leading continuous power, storage capacity, and DC round-trip efficiency (>90%). Stackable to 32 kWh of energy storage capacity, the RESU16H Prime can fully cover an average daily electricity use of a home.

SPECS
Electrical Characteristics
Nominal Energy 16.45 kWh
Usable Energy1) 16.0 kWh @77°F (25°C)
Voltage Range Charge 420 ~ 450 VDC
Discharge 350 ~ 410VDC
Max. Charge/Discharge Current 20A@350V
Max. Charge/Discharge Power 7 kW
Peak Power (only discharging)2) 11 kW for 10 sec.
Peak Current (only discharging) 32.8A for 10 sec.
Battery Chemistry Lithium Ion
Communication Interface RS485/CAN
DC Protection Circuit Breaker, Fuse, DCDC converter
(Short Circuit Current : 1.616kA)
Connection Method Spring Type Connector
User interface LEDs for Normal and Fault operation
Protection Features Over Voltage / Over Current /
short circuit / Reverse Polarity
Scalability
(Total Energy, Max. Charge/Discharge Power)
Max. 2 in parallel
(32.0 kWh @77°F (25°C), 14kW)

Only 14 units left in total

Happy to quote on PV installation also.
Price includes installation in Standard metro in WA, NSW, VIC, QLD
travel or freight is an additional charge

Kenny Solar
1300882990
www.kennysolar.com.au
info@kennysolar.com.au

Jim Motavalli shares his insights about electric vehicles in his new book, High Voltage: The Fast Track to Plug in the Auto Industry.

A high voltage full wave rectifier and doubler circuit having complementary serially connected low voltage MOSFET stacks to provide high voltage capability. The state of the MOSFETs in the MOSFET stacks is controlled by means of resistors coupled between the circuit's outputs and a time varying input signal. The resistance values of the resistors are selected to maintain operation of the stacked MOSFETs below their breakdown voltages.

A drain plug assembly that has particular application for sealing a drain hole in a high voltage battery compartment on a vehicle. The plug assembly includes a plug that inserted into the drain hole. The plug assembly further includes a return spring coupled to the plug and causing the plug to be biased into the drain hole. The plug assembly also includes at least one shape memory alloy device coupled to the plug and a support structure. The SMA device receives an electrical current that causes the device to contract and move the plug out of the drain hole against the bias of the return spring.

A DC voltage converter includes an oscillator that converts a DC battery voltage to an oscillating voltage, a low voltage transformer that increases the oscillating voltage to a higher oscillating voltage, and a voltage rectifying-capacitor charging network or multiplier that increases the higher oscillating voltage to yet a higher DC voltage at an output terminal for DC high voltage utilization devices and the like. An electric control switch is selectively actuated by the user to apply the battery voltage to the oscillator, resulting in the generation of the stepped-up DC voltage at an output terminal. Another DC voltage converter has an electronic switching circuit that automatically turns the oscillator on and off and a load capacitor across the electrodes that is charged and discharged to provide a shocking voltage. Utilization devices for the voltage developed by the converter shown are a miniature animal training device and a cattle prod device. The miniature animal training device has a pair of outwardly projecting electrodes mounted on a side at one end of the housing that is sized and shaped to fit within and conform to the palm of a hand. The cattle prod device has a pair of electrodes fixedly mounted on the end of a housing assembly made up of telescoping tubular housing sections arranged for relative axial movement whereby the pressing of the electrodes against an object to be shocked actuates the electric control switch and causes a shock of the object. The housing assembly is releasably supported by a rigid handle or an extensible handle assembly.

This disclosure relates to methods and systems to reduce high voltage breakdown jitters in liquid dielectric switches. In particular, dielectric liquids have been produced that contain a suspension of nanoparticles and a surfactant to reduce the breakdown jitter. In one embodiment, the suspended nanoparticles are Barium Strontium Titanate (BST) nanoparticles.

A sealed solenoid, magnetically operated electric power switch is suitable for use as capacitor, line and load switch operating at transmission and distribution voltages that includes no dynamically moving seals through the sealed container housing the contactor portion of the switch. The sealed solenoid switch includes a magnetically operated drive system with an actuator that magnetically couples across the container wall to avoid the use of a moving or sliding seal as part of the drive system. The sealed solenoid switch may also include a ballast resistor and resistor contact located inside the sealed container to avoid another seal as part of the ballast system. A magnetic latch holds the switch in a closed position, and a spring holds the switch in the closed position, to avoid the need for an energizing current to maintain the switch in either position.

The high voltage relay consists of a main body (1). One set of electrical contacts (2a, 2b) upper and lower respectively. High voltage connections to connect the voltage being switched (3a, 3b) are electrically connected to the upper and lower contacts respectively. Several size options for the electrical contacts will allow for a wide range of currents. A cylinder (4) driven by a fluid (e.g. Air, Nitrogen, Hydraulic fluid) moves the electrical contacts together during the ON state of the device. During the OFF state of the device the cylinder moves the electrical contacts apart to isolate the switch voltage. The greater the High Voltage being switched the greater the distance the electrical contacts must be moved apart in the OFF state. The cylinder is supplied the fluid power from a small solenoid (5) on the device. This solenoid has control voltage connections to actuate the device.

Subsea high voltage connection assembly (10) comprising a first section (100) having a first section body (104) to which a set of first connector(s) (111) is arranged and a second section (200) having second section body (204) to which a set of second connector(s) (211) is arranged. The assembly (10) further has a section body movement arrangement (103, 400, 9, 123) adapted to move one of the section bodies (104, 204) towards and away from the other section body, between a disengaged position and an engaged position. Further, the assembly (10) has a connector movement arrangement (105, 400). Also disclosed are a method and a subsea high voltage wet mate connector assembly.

Power system for supplying high voltage to an electron beam emitter, which is adapted to sterilize a packaging container or a packaging material by electron beam irradiation, the power system comprising a voltage multiplier for generating a high voltage, a first voltage measurement device for measuring an output voltage level of the voltage multiplier and providing a first measured voltage value, and an actuator for modifying the output voltage level of the voltage multiplier based on the first measured voltage value provided by the first voltage measurement device, characterized in that the power system further comprises a second voltage measurement device adapted to independently measure the output voltage level of the voltage multiplier and provide a second measured voltage value.

Roles & Responsibilities Document test methods, perform system testing, and document test results for HV system performance testing Lab development testing and documentation of power electronic subsystems Testing of high voltage, high power electronic components including system bring up an

Roles & Responsibilities: Design and optimization of HV circuits (450 to 1700 V) including gate drives, inverter, and protection features for low and high power circuits Create and document models for HV circuits Develop worst case analysis for HV Circuits Create detailed component desi

Approved project 50193-003 in India.

Towering pylons and high tension wires seem to discourage any idea of resistance to environmental destruction in Tehri Garhwal, but the villagers persist. Bharat Dogra reports.

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