Drop out fuses and load-drop fuses are outdoor high voltage protection appliances. It is installed on the high voltage side of the distribution transformer or on the branch line of the distribution line. used as a short circuit of the transformer and the line, overload protection and split load current.
The drop fuse is composed of two parts:
An insulating bracket and a fuse tube. The static contact is installed at two ends of the insulating bracket, the movable contact is installed at both ends of the fuse tube, and the fuse tube is composed of an inner arc extinguishing tube and an outer layer.
It consists of a phenolic paper tube or an epoxy glass tube. The load drop fuse enhances the elastic auxiliary contact and the arc extinguishing cover to divide and combine the load current.
Product use environment:
1. The ambient temperature is not higher than +40 C, not lower than-40 C
2.The altitude does not exceed 3000m
3.The maximum wind speed does not exceed 35m/s
4.The earthquake intensity does not exceed 8 degrees
In electrical distribution, a fuse cutout or cut-out fuse is a combination of a fuse and a switch, used in primary overhead feeder lines and taps to protect distribution transformers from current surges and overloads. An overcurrent caused by a fault in the transformer or customer circuit will cause the fuse to melt, disconnecting the transformer from the line. It can also be opened manually by utility linemen standing on the ground and using a long insulating stick called a "hot stick".
Wholesale Fuse Cutout â??s Construction
The fuse elements used in most distribution cutouts are tin or silver alloy wires that melt when subjected to high enough current. Ampere ratings of fuse elements vary from 1 ampere to 200 amperes.
Standards
Up until the mid-1990s each manufacturer used their own dimensional standards for cutout design; by the late 1990s most cutouts were of an "interchangeable design". This design allows for the interchangeable use of cutout bodies and fuse holders manufactured by different vendors.
Thermal fuse manufacturing
The thermal fuse is a non-resettable, one-time overheat protection element, and the current fuse is a one-time overcurrent protection element. Series connection in a variety of electrical power input, when the use of household appliances in the abnormal temperature changes, or temperature out of control lead to excessive temperature rise, the thermal fuse can quickly cut off the circuit to avoid the occurrence of fire.
Commonly used in: hair dryer, iron, rice cookers, electric stoves, transformers, motors, drinking fountains, coffee pots and so on.
We not only related to the product structure and technology, more in-depth to the core of the product - Fuse materials development and application, such as fusible alloy wire, lead antimony alloy wire, organic mixture and so on. To provide you with one-stop from the rapid proofing to small batch production services. Please contact our professional team, let us come for you to achieve all the technical requirements.
What Is A Thermal Fuse?
Thermal fuse, is overheat protection components, also known as temperature fuse or Thermal Cutoff (GB GB1616.1-2013), widely used in electrical overheating protection.
The temperature sensing portion can be divided into:Fusible alloy wire and organic particle type temperature fuse, after fusing once cut off the current, non-recovery type thermal fuse.
Features Of Thermal Fuses
In Yaxun can provide a full range of thermal fuses, from your first consultation message to the final product delivery, you can get our engineers and sales staff professional, personalized service.
(1) high precision operating temperature, fusing action is reliable, not premature or delayed blown;
(2) good thermal stability, long-term in a high temperature state will not get out of control;
(3) load current up to 20A, it can be adapted to use a large current household appliances;
(4) the shell is not charged, the use of safe, easy to install;
(5) low prices, to adapt to mass production.
(6) temperature response speed;
(7) small size, easy to install.
(8) Structural accurate, resistance to vibration, impact resistance, applicable to household appliances, industrial circuit overheating protection;
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Fuse Cutout
Specification:
A fuse cutout or cut-out fuse is a combination of a fuse and a switch, used in primary overhead feeder lines and taps to protect distribution transformers from current surges and overloads. An overcurrent caused by a fault in the transformer or customer circuit will cause the fuse to melt, disconnecting the transformer from the line. It can also be opened manually by utility linemen standing on the ground and using a long insulating stick called a "hot stick"
Catalog symbols:
EV20-(amp) 20 mm diameter
EV25-(amp) 25 mm diameter
EV30-(amp) 30 mm diameter
Description:
Eatons Bussmann® series Electric Vehicle (EV)
fuses for the protection of high power battery
charging and management systems up to 500 Vdc
in ratings from 50 to 400 amps.
Specifications:
Ratings
Volts - 500 Vdc
Amps 50-400 A
Interrupting rating
Max DC 20 kA
Min DC 200%
Agency information
Designed to:
JASO D622
ISO 8820-8
Manufactured under a TS16949 quality system
for compliance with automotive requirements
RoHS compliant
REACH declaration available upon request
Packaging
20 mm fuses: 250 fuses per box
25 mm fuses: 100 fuses per box
30 mm fuses: 100 fuses per box
Features:
Higher voltage rating provides overall system efficiency using smaller, more economical
conductors while meeting the needs of higher voltage battery packs.
Higher interrupting rating protects high capacity battery packs needed for vehicle acceleration and range requirements.
Up to ten times faster opening under high fault current conditions helps assure reliable
protection of circuits and components.
Requires up to 48% less space than conventional high speed fuses to help reduce
space and weight.
Data logging system marks each fuse with a serial number and date code for traceability of Critical to Quality characteristics.
To help project the life of the fuse in your application, unique driving profiles and
conditions can be simulated to verify proper fuse size and performance under a wide range of driving behaviors.
Operation as low as 200% overload provides back up protection to the battery management system.
Can be applied in parallel to realize greater ampacity within sizing guidelines.
