Instrument Transformer Cores - Industrial Power - Advanced Technology & Materials Co., Ltd.

Applications

Current transformer of power system plays an important role in providing a current in its secondary winding proportional to the alternating current flowing in its primary. They are commonly used in metering and protective relaying in the power plants and substations where they facilitate the safe measurement of large currents, often in the presence of high voltages. The current transformer safely isolates measurement and control circuitry from the high voltages typically present on the circuit being measured.

Comparing with the traditional core material, such as silicon steel and permalloy, Iron based nanocrystalline alloy takes the advantage of high permeability and low cost, it is more competitive in the application of precision current transformer with 0.2,0.2s,0.1 accuracy class, Bushing current transformer for Epoxy resin cast, Gas insulated or oil-immersed switchgears, LV, MV and HV switchgear, and other apparatus in electric power transmission and distribution system.

Characteristics
Comparison of different materials

饱和磁感应强度(T)	1.25	饱和磁致伸缩系数	2×10^-6
居里温度Tc	560℃	密度	7.2 g/cm³
晶化温度Tx	510C	电阻率	130μΩ/cm
硬度Hv	880kg/mm²

Antainano®铁芯具有高磁导率、精度高。与坡莫合金相比具有更高的饱和磁通密度，测量电流范围更广。

Advantages of nanocrystalline alloy core

• High permeability―lead to minimized current measuring error in CT
• High saturation Induction ―lead to small size and light weight compared to Permalloy CT
• Excellent thermal stability―Can work at -55~130°C for long time
• Low cost:Ideal for substitute of permalloy cores commercially

Products specifications

产品规格	铁芯尺寸			护盒尺寸
产品规格	外径(mm)	内径(mm)	高度(mm)	外径(mm)	内径(mm)	高度(mm)
ON-055037020	55	37	20	60	32	25
ON-115090010	115	90	10	120	85	15
ON-260200035	260	200	35	265	195	41
ON-280205090	280	205	90	285	200	97
ON-350250030	350	250	30	355	245	35
ON-390260025	390	260	25	395	255	30
ON-450360020	450	360	20	455	355	25
ON-485445015	485	445	15	490	440	20
ON-540435040	540	435	40	546	429	46
ON-600460065	600	460	65	606	454	71
ON-875720020	875	720	20	883	712	27
ON-1050800030	1050	800	30	1058	792	37

Note : Cores with other specifications can be provided concerning to customer's demand.