#overvoltage

[mingos-commodoreblog]

C64 Upgrade - Part 4

Installing the Lumafix and a Overvoltage Protection

[kynixsemiconductor08]

What is a Thyrsitor?

A new article gives you a detailed introduction about thyristors. Click for further reading if you’re into electroncis. :)

[schematicdesigns]

Under/Overvoltage Protection Circuit

Voltage fluctuations on power supplies have adverse effects on connected loads. These can either be overvoltage or undervoltage. These are caused by several phenomena such as voltage surges, lightning, overload among others. When the input voltage exceeds the rated values, this causes insulation ...

[vbsemi-mosfet]

How are discharge MOSFETs broken down by overvoltage?

How does the discharge MOS of a BMS break down?

Why is the voltage higher in a BMS system than in a system?

Before the MOS tube is shut down, a large current flows through the MOS tube to power the load, which is almost the same voltage across the load as the battery at each end.

Because the current does not change much, the parasitic inductors L1 and L2 are like wires.

When the MOS tube is turned off, the current of the inductor cannot change suddenly, so a loop is required to maintain the current, and the inductor becomes a small power supply.

The energy previously stored in the inductor requires the release of an electric current, but the current creates a voltage on the inductor.

In other words, this circuit (including the battery) has three power supplies connected in series and applied to the MOS tube.

Therefore, this total voltage must be higher than the battery voltage.

How much taller is it?

The L2 inductance is generally related to the positive and negative poles of the battery and the leads of the BMS system, and the parameters are generally relatively small; L1 inductors are different. In the case of over-current protection and short-circuit protection, the current is relatively large when the current is turned off, and the voltage drop will be large enough to penetrate the MOS transistor.

How to solve it?

You can make the MOS tube close slower, so that the di/dt will be much smaller and the voltage on L1 will be lower.

[kaichpower]

Explosion-Proof Over-Voltage Protector

Special purpose surge arrester is consisted of four star connection element and base. It is mainly used in power plant, substation and plant power system. For generator, transformer (including electric furnace transformer), switch, generatrix, motor and other electric equipment except limiting atmospheric overvoltage protection, also can limit over-voltage of power system operating at the same time, reliable protection of electrical equipment insulation.

Explosion-Proof Over-Voltage Protector Special purpose surge arrester is consisted of four star connection element and base. It is mainly us

[amitsm356]

63A 3ph Equipower lite installed for voltage protection of LED hoarding in Thane

63A 3ph Equipower lite installed for voltage protection of LED hoarding in Thane

#doublevoltage #voltageprotector #pioneerads #MSS 63A 3 ph Equipower lite installed for voltage protection of LED hoarding in ThaneThis is project for Pioneer Ads thane. Equipower will protect against neutral open, double phasing, double voltage , 440V in any individual phase for indefinite period of time. It is designed for this purpose specifically. #Equipower™ is a voltage protector which…

View On WordPress

[amitsm356]

60kVA 3 ph Equipower installed at Kalyan Janata Bank

60kVA 3 ph Equipower installed at Kalyan Janata Bank

60kva 3 phase equipower installed for Kalyan Janata bank for protection of it complete branch from voltage problems and voltage surges.It also gives 440V protection.All banks and ATMs should have this protection440Vprotection #homevoltageprotector #doublevoltage #MSS #KalyanJanataBank #Kalyan #KJSB

View On WordPress

[iec-mediacoverage]

Electrical Safety (July 2021)

Before You Get Started: Things to Consider in Low-Voltage Work

... The highest level of overvoltage protection is Category IV. It is the primary supply level, also known as the service entrance, and it includes any outside overhead or underground lines that might be running between, say, a house and a detached garage. Category IV 1000 volts is the highest level of protection specified by the IEC standard.