Amorphous transformers (AMDT)-Amorphous Core Transformer

Amorphous transformers (AMDT)

Super low loss amorphous transformers By using Amorphous Metal, the Core Loss (NLL) of a Transformer can be reduced by a whopping 75% - resulting in enormous energy savings.

Technical specification

GENERAL TECHNICAL INFORMATION
Power Range kVA: 3. 5, 10, 15, 25, 37, 50, 75, 100, 167, 250, 333, 500
Temperature Rise: 55°C or 65°C
Cooling type : ONAN, OA,
Frequency: 50Hz or 60Hz
Polarity : Additive or Subtractive
Primary Voltage : 2400V through 34500 GrdY / 19920V
Secondary Voltage : 120 / 240V, 240 / 480 V, 277V, 600V
Insulation Class : 2.4Kv~34.5kV (150kV BIL) and below
Taps: none, or as an option, 4 x 2,5% HV
HV Bushings: cover and sidewall mounted available

STANDARD FEATURES
−−Core and coils designed for an optimum Total Ownership Cost (TOC)
−−Wound core with step-lap joints for increased efficiency and lower noise levels
−−“Low-high-low” windings for increased short circuit strength, efficiency and thermal strength
−−“Low-high-low” windings for increased short circuit strength, efficiency and thermal strength
−−Computer aided design for mechanical & electrical calculations (C.A.D.)
−−Paint system meeting or exceeding the performance of the IEEE C57.12.28 Standard
−−Lifting lugs meeting all of the requirements of the CSA C2.1-06 and CSA C2.2-06 Standard
−−Multiple cover clamps to ensure proper sealing and to mini-mize water retention on the cover edge
−−Cover or sidewall mounted high voltage bushing(s) as required
−−Low voltage spade or clamp type (basket) terminals as required
−−Provision for surge arrester bracket, bracket available as an option
−−Automatic self-resealing pressure relief valve

OPTIONAL PRODUCT ACCESSORIES
Cold-Rolled Grain Oriented Silicon Steel Core (CRGO) or Amorphous Metal Core (AMDT)
Stainless Steel Tanks and Cover
Extra Creep Bushing
Surge Arrester Bracket
The CSP protection package consists of four related components: H.V Fuse Link, Secondary Breaker, Signal light, External Surge Arrester that work together to provide complete self-contained protection against surge currents, short circuits and overloads.
Units can be customized to specific requirements

KVA	H.V.	Taps	L.V.	Loss(W)		DIMENSION(mm)				E	Weight(kg)
KVA	H.V.	Taps	L.V.	Core	Winding	A	B	C	D	E	Weight(kg)
5	13200/7620 or 11000/6350	±2×2.5% or 0	120 240 480 or 120-240 240-480	8	75	840	400	480	310	286 591	70
10				12	120	864	430	510	340		10
15				15	195	914	430	510	340		125
25				18	290	1041	480	560	380		162
37.5				30	360	1120	520	610	450		240
50				32	500	1245	520	610	450		295
75				45	650	1245	600	680	510		420
100				50	850	1270	640	710	510		465
167				65	1410	1470	940	840	610		650

Standards
IEEE C57.12.00,

ANSI C 57.12.20
IEC 60076

Certificate

ISO 9001

ISO 14001

The cores of conventional transformers consist of stacks of laminations that are made from silicon steel with an almost uniform crystalline structure (CRGO). In transformers with amorphous cores, a ribbon of steel is wound forming the core. The big benefit of amorphous metal core transformers is that amorphous steel has lower hysteresis losses. Simply put this means that less energy is wasted in magnetising and demagnetising it during each cycle of the supply current. The infrared pictures (above) illustrate this: The AMT core (left) shows a lot less heat than the CRGO core (right).

Advantage and Applications

Up to 75% energy saving over conventional silicone steel (CRGO)

Reduced carbon dioxide emissions

Reduction in fossil fuel consumption

Reduced magnetising current