Product Details

220V 3 PHASE ISOLATION TRANSFORMER

Name	20kv dry type transformers 3 phase step down
Capacity range	30-16000KVA
Voltage class	10KV,35KV
Volt-regulation means	no-excitation volt-ragulation or on-load volt-regulation.
Tapping range	+/-5%,+/-22.5%.+/-42.5%
Frequency	50 or 60Hz
Number of phase	three or single phase
Coupling group tab	Yyn0,Dyn 11 or others
Highest temperature-rise	100K.
Cooling method	self-cooling(AN) of forced air cooling(AF)
Protection Class	IP00,IP20,1P23
Insulation class	F

Short electrical impedance:

standard impedance (refer to performance data)

The altitude is supposed to be lower than 1000m, the ambient temperature is lower than 40centigrade, the corresponding rating regulation is suggested to be done according to standard provided beyond above operation condition.

Insulation level:

1.The power frequency withstand voltage of 10KV class product is 35KV, lightning impulse voltage is 75kv

2.The power frequency withstand voltage of 20KV class product is 50KV, lightning impulse voltage is 125kv

1. High Reliability By adopting the special VPI (vacuum pressure impregnation) technology and excellent NOMEX® insulation paper, the product shows good overall temperature and humidity resistance as the compact NOMEX® insulation paper still keeps 90% of dielectric strength under complete drying when the humidity is 95%, and good radiation resistance as the product still has original electrical performance and mechanical property in the event of 800 Mrad ionizing radiation.

2. Strong Overload Capacity Because of using NOMEX®paper as a major insulation material, the product has large heat-resistant margin. NOMEX® paper belongs to C-class insulation, and can work safely and stably under 220℃ for a long term. Designed as H-class insulation, the product’s maximum operation temperature is 180℃, therefore, 40℃ heat-resistant margin will ensure the transformer to work safely even under the circumstances of higher air temperature, more harmonic components and short running beyond installed capacity.

3. Good Environmental Protection, Low Noise NOMEX® paper will endure a short running at 350℃, and cannot soften, fuse and support combustion at 250℃. It will not send out toxic or corrosive gas even at the temperature of 750℃, and never embrittle at an extremely low temperature. The iron core is made out of imported high-quality oriented silicon sheet under optimized design, so the noise will be controlled within 48dB, and the environmental performance is excellent.

4. Good Electrical Performance and Small Partial Discharge

OUR SERVICE:

1 .Customized design depends on your requirement. OEM is welcomed.

2 .Reply your inquiry in half of hour,24 hours on line.

3.Special discount and protection of sales area provided to our distributor.

4.Warranty:1year.

FAQ:

1. What is Amorphous Alloy?

An amorphous metal (also known as metallic glass or glassy metal) is a solid metallic material, usually an alloy, with a disordered atomic-scale structure. Most metals are crystalline in their solid state, which means they have a highly ordered arrangement of atoms.Amorphous metals are non-crystalline, and have a glass-like structure. But unlike common glasses, such as window glass, which are typically electrical insulators, amorphous metals have good electrical conductivity.