What is BS fuse?
The BS fuse holders are designed for safety & easy operation. They are used for blade & offset tag of fuses upto 100A. Applications. The fuses are ideally suited for protection of lighting and heating circuits and can be used in industrial as well as in building application.
What are the 5 types of fuses?
The low voltage fuses are divided into five types and those are of the rewirable, cartridge, drop out, striker, and switch fuses.
What is a BS 88 3 fuse?
However, the main types may be summarized as: BS 88-2 = industrial, (BS HD 60269-2) BS 88-3 = domestic, (BS HD 60269-2) 88-4 = fast fuses (protection of semiconductor devices e.g. motor drives, etc)
What is the difference between gG and gL fuses?
gG and gL is the same thing where gL is an older definintion. The application cateogory is a two-digit code. The first letter is a if the fuse is for short-circuit protection only; an associated device must provide overload protection.
How do you calculate fuse size?
To calculate a fuse rating, manufacturers work from a simple equation:
- Power (watts) = Voltage x Current (amps) What we really want to know with this equation is the current (amps).
- Amps = Watts / Voltage. So, let’s say we need to work out the fuse rating for a washing machine.
- 850/120 = 7.08 amps.
What BS is a HRC fuse?
BS 88
Fuse, High Rupturing Capacity (HRC), British BS 88, LET, 100 A, Bolted Tag, 240 VDC, 240 VAC.
What are the 3 types of fuses?
Fuses can be classified as “One Time Only Fuse”, “Resettable Fuse”, “Current limiting and non – current limiting fuses” based on the usage for different applications.
What are the two basic types of fuses?
Fuses can be divided into two major categories, AC fuses, and DC fuses.
What is a BS 88 2 fuse used for?
A BS88 fuse contains a sacrificial link that breaks during an overload or short circuit scenario to protect the rest of the electrical system. BS88 fuses are used in low voltage industrial and general-purpose applications and meet the requirements of BS88 and IEC60269.
How does a BS88 fuse operate?
The lower the fuse rating, the quicker it will internally disintegrate. (Inside the BS88 fuse body is the fuse wire/wires which are surrounded by sand. The fuse clears the fault once the wire/wires are melted inside the sand). So the fuse is melted by energy which is the I2T number you are referencing.
What does G on a fuse mean?
What is a Class G, Fuse? A UL Class G fuse is a 600/480 volts AC current limiting, fuse that is rated to interrupt a minimum of 100,000 amps. Ampere ratings range from ½ amp to 60 amps. The type G fuse meets the NEC, requirements for branch circuit, protection.
How do you choose a fuse for a circuit?
Make sure to select a fuse that has a rated voltage higher than the voltage of the circuit. The rated voltage of a fuse is the maximum voltage at which the fuse can safely interrupt an abnormal current.
How do you calculate fuse size in a circuit?
The fuse rating can be calculated by dividing the power used by the appliance by the voltage going into the appliance. I (Amps) = P (Watts) ÷ V (Voltage).
What is a BS 1362 fuse?
BS 1362 is the British Standard number for cartridge fuse links used in UK plug tops. BS1362 fuses protect the cables connected to domestic equipment against overloads or small overcurrents. They may also be used in appropriate single-phase installations (for example, fused spur connection units).
What is HRC fuse used for?
HRC fuses are used to protect the circuit from short circuits in HV switchgear.
What type of fuse is High Voltage?
2.2 High Voltage Fuse
They are classified into three types: Cartridge type HRC fuse, Liquid type HRC fuse, Expulsion type HRC fuse.
How do I choose the right fuse?
A fuse should be de-rated by 25% at room temperature, meaning if there is a 7.5 amp circuit, a 10 amp fuse should be used at 25˚C. Voltage ratings on a fuse can be higher than the voltage on the circuit, but not lower. At the end of the day, a simple fuse is a great way to effectively protect a circuit.
Are fuses AC or DC?
Generally, fuses have a DC voltage rating that is half of the maximum AC voltage rating.
What type is a BS 88 2 fuse?
I think most will know that a BS 88-2 fuse is a HBC, a high rating/breaking capacity for, sort of, industrial type applications. You say that ‘industrial’.
How does a BS88 fuse work?
What is the short circuit capacity of a bs88 fuse?
The standardised values of Breaking Capacity are 80kA for voltages of 415V a.c. and above, and 40kA for d.c. applications.
What type of fuse system is a bs88 2?
I think most will know that a BS 88-2 fuse is a HBC, a high rating/breaking capacity for, sort of, industrial type applications.
What does P on a fuse mean?
Standard non-time delay fuses are for receptacle and lighting circuits. Standard time delay fuses are for motor loads. For Canadian requirements, a type “P” fuse is used for non-motor loads and type “D” fuses are used for electric heating and cycling loads circuits.
How do I calculate which fuse to use?
The simple calculation is watts divided by volts equals amps. After you have calculated this, it is a simple case of adding around 10% to the value and choosing the nearest fuse to match.
How do you select a fuse for a circuit?
In short, the following factors should be considered when selecting a fuse for a given system:
- Normal operating current.
- Operating Voltage.
- Ambient Temperature.
- Inrush Currents.
- Maximum Fault Current.
- Length of time in which the fuse must open.
- Maximum allowable I 2t.