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China
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No.58 Shijiatang, Banshang Heshu, Lijia Town, Changzhou, Jiangsu
Cores
Amorphous & Nanocrystalline cores are used for distribution transformers, instrument transformers, current transformers for electronic energy meter, zero-phase sequence current transformers for earth leakage circuit breaker, common mode chokes, power transformers and inductors for inverter power supply.
Precision current transformer core - ONM series
Applications
•Electronic Watt hour meter
•Precision power meter
•Current overload protection in engine control
•Current control in automation industry
Features
•High permeability, which lead to low phase and amplitude error
•Very high saturation flux density compared with Permalloy, which
bring higher measurement current range
•Low core losses which lead to low amplitude
•Good temperature stability
Standard Material Characteristics
| Material | Iron-based nanocrystalline alloy |
| Saturation Flux Density Bs (T) | 1.*5 |
| Permeability ( μ) at 0.*8 A/m | ***********0 |
| Coercive Force Hc (A/m) | 0.8 |
| Curie Temperature (°C) | **0 |
| Mass Density d (kg/m3) | 7.2***3 |
Product code: ONM －OD
ID HT
(1) (2)
(3) (4)
(1) Series name
(2) Core outer diameter
(3) Core inner diameter
(4) Core height
Specifications
| Part No. | Case Size (mm) | Properties | ||||
| OD’ | ID’ | HT’ | N1:N2 | IIN(mA) *0Hz |
V0(mV) min |
|
| ONM******5 | *9.6 | *1.6 | 6.4 | 1:1 | 2.*3 | 0.**6 |
| ONM******6.5 | *2.3 | *2.0 | 9.5 | 1:1 | *0 | 2.*0 |
| ONM******8 | *1.6 | *2.0 | *1.0 | 1:1 | *0 | 2.*0 |
| ONM******0 | *4.0 | *1.6 | *3.0 | 1:1 | 6.*4 | 0.*5 |
| ONM******0 | *4.7 | *1.3 | *3.0 | 1:1 | *0 | 9.*0 |
| ONM******4.5 | *4.0 | *4.5 | 7.0 | 1:1 | *0 | 0.*2 |
| ONM******0 | *4.5 | *4.2 | *2.7 | 1:1 | *0 | 0.*5 |
| ONM******0 | *5.0 | *4.1 | *3.0 | 1:1 | 6.9 | 0.*5 |
| ONM******4.5 | *8.0 | *7.5 | 7.2 | 1:1 | *0 | 0.*2 |
| ONM******0 | *8.9 | *6.6 | *3.0 | 1:1 | *0 | 0.*5 |
| ONM******5 | *1.0 | *5.2 | *7.7 | 1:1 | 4.*7 | 0.*2 |
