Anhui, China
Business Type:
Number of Employees:
Year of Establishment:
Management System Certification:
OHSAS18001:2007, ISO9001:2015 Certificate, ISO14001:2015 Certificate
Average Lead Time:
Peak season lead time: within 15 workdays
Off season lead time: within 15 workdays
OEM/ODM Service

Current Limiting, Device, Circuit Breaker manufacturer / supplier in China, offering Is High-Capacity Speedy Current Limiting Device, Km-Ftb Large Capacity Explosion-Proof Overvoltage Protector, Km-Gdy Over Voltage Suppression Cabinet and so on.

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Supplier Homepage Products Power Device Is High-Capacity Speedy Current Limiting Device

Is High-Capacity Speedy Current Limiting Device

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Min. Order / Reference FOB Price
1 Piece US $72,470-86,956/ Piece
Port: Shanghai, China
Production Capacity: 1000 Pieces/Month
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Breaking Capacity: High Voltage Circuit Breakers
Operation: Electric Type
Speed: High-Speed Circuit Breaker
Arc-extinguishing Medium: Vacuum
Installation: Fixed
Structure: MCCB

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Basic Info

Model NO.
Poles Number
Circuit Breaker
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
ISO9001-2000, CE, CB, CCC
Transport Package
Wooden Box
Chinese, Hefei
KM-IS large capacity rapid current limiting device

The large-capacity rapid current limiting device (KM-IS) is a new short-circuit protection device developed by the company to meet the short-circuit protection requirements of the power system. It can interrupt the short-circuit current at the initial stage of the short-circuit current rise (less than 1ms). ), so that it can not flow to the short-circuit point with the peak value of the short-circuit current, thereby achieving the purpose of protecting the power distribution equipment and the power supply line.
Is High-Capacity Speedy Current Limiting Device
Main features of the device
KM-IS large-capacity rapid current limiting device has the characteristics of large breaking capacity, fast breaking speed, obvious current limiting effect and high operational reliability. It is widely used in single-phase and three-phase equipment of power system to quickly remove short-circuit faults. . It not only breaks the short-circuit current, but also limits the operation over-voltage, which fully protects the safety of the equipment. Mainly have the following characteristics:
  1. It can replace the system using the circuit breaker plus current limiting reactor operation mode, or parallel operation with the current limiting reactor. It avoids the electrical loss, voltage fluctuation and electromagnetic interference of the current limiting reactor during normal operation and provides power quality.
  2. The cutoff time can be controlled within 1ms, and the short circuit current never rises to the peak of the first big wave. This makes electrical equipment and circuits no longer subject to short-circuit peak currents, thus extending service life.
  3. It can reduce the investment of substation and solve the short circuit current problem encountered in the expansion of new substations and substations.
  4. The high-energy zinc oxide varistor is configured to absorb the magnetic energy during the breaking process, and the breaking capacity can reach 240KA.
  5. No harmful overvoltage during the breaking process.
  6. The structure is reasonable and the rated current can reach 6300A.
The composition
KM-IS large-capacity fast current limiting device consists of fast current limiter IS, high-voltage current limiting fuse FU, high-energy zinc oxide non-linear resistance FR, special current transformer CT, special pulse transformer MB and microcomputer measurement and control unit ZK, referred to as KM -IS.

The type and technical parameters of the device.

Is High-Capacity Speedy Current Limiting Device

Rated voltage (KV)6  10  13.8  17.5 18 35
Rated current (KV)1  2  3  4  5  6.3
Rated breaking current (KA) 63  80  100  125  160 240
Interruption time (MS) the interception time         the time of current is reduced to 0 of
<1                                                              < 3
 the use of environmental conditions
Ambient temperature:  indoor -15ºC ~+16ºC
                                    special can achieve -40ºC ~+60 ºC
                                    outdoor type - 40ºC ~+60ºC

Altitude:   2000m, special 4000m.

Usage environment:  there should be no explosive mixture such as dust, gas,                                      smoke and so on.

Installation location:  there should be wind, rain, sand and dust-proof facilities.

Users will need to negotiate with the company for the above environmental conditions.
Packaging, Transportation, Storage

Packing: wooden box is generally used, and the base of the cabinet is fixed on the bottom plate of the packing box.

Transportation: It is not suitable for long distance transportation on highways below three grades. If necessary, it can be separated and packed. Important accessories should be treated before highway transportation.

Storage: if it is not used for a long time, it should be stored in dry and ventilated storehouse, not suitable for outdoor storage.

Installation, Commissioning, Maintenance

The company is responsible for drawing design and parameter selection according to the requirements of users. After the equipment assembly and debugging, the professional inspectors carry out the second simulation experiment and 1:1 high-voltage simulation experiment, the inspection qualified before leaving the factory. If the user needs, the company can be responsible for on-site installation guidance and commissioning services, users provide the necessary cooperation and assistance.

The normal operation of the equipment does not require maintenance and overhaul, but after the device action must be carefully checked whether the fuse is damaged, whether the impact rod is ejected.

In compliance with the custody and use requirements of the user, from the date of installation and use of 12 months, or from the date of shipment within 18 months, the product due to quality reasons damage or can not work normally, the company will be free to repair or replace the user.

The company carries out life-long maintenance of the equipment and provides spare parts for a long time at a preferential price.

Is High-Capacity Speedy Current Limiting Device
Is High-Capacity Speedy Current Limiting Device
Is High-Capacity Speedy Current Limiting Device
Is High-Capacity Speedy Current Limiting Device
Is High-Capacity Speedy Current Limiting Device
Is High-Capacity Speedy Current Limiting Device

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