Amorphous Cores

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China Mainland
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Description

Product Detail

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)	1.25
Permeability ( µ) at 0.08 A/m	30000-120000
Coercive Force Hc (A/m)	0.8
Curie Temperature (°C)	560
Mass Density d (kg/m3)	7.2*103

Product Identification:

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
Part No.	OD'	ID'	HT'	N1:N2	IIN(mA) 50Hz	V0(mV) min
ONM-181305	19.6	11.6	6.4	1:1	2.73	0.006
ONM-191406.5	22.3	12.0	9.5	1:1	50	2.00
ONM-191408	21.6	12.0	11.0	1:1	50	2.00
ONM-211310	24.0	11.6	13.0	1:1	6.14	0.15
ONM-211420	24.7	11.3	23.0	1:1	50	9.00
ONM-211604.5	24.0	14.5	7.0	1:1	10	0.02
ONM-211610	24.5	14.2	12.7	1:1	10	0.25
ONM-231610	25.0	14.1	13.0	1:1	6.9	0.15
ONM-251904.5	28.0	17.5	7.2	1:1	10	0.02
ONM-261810	28.9	16.6	13.0	1:1	10	0.25
ONM-281815	31.0	15.2	17.7	1:1	4.07	0.12