350kw Dry Type Three Phase Isolation Transformer (4 loops) with Cabinet

• Application: Power, Electronic, Instrument, Rectifier
• Phase: Three
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001, CCC
• Model NO.: BC-E00031A
• Usage: Rectifier Transformer, Combined Transformer, Power Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Silicon Steel Sheet
• Brand: Bc Power
• Supply Voltage Fluctuation: <+/-5%
• Temperature Sampling: Thermistor Ntc Temperature Switch
• Isolation Grade: Class H (180 C)
• Transport Package: Wooden Case
• Specification: 1500*1200*1800 mm, 220V/400V/480V/540V/600V/800V
• Origin: Dongguan City, Guangdong Province, China
• Production Capacity: 240-360 PCS/Year

Product Description

1. The primary side is 4 loops with 6 contactors are configured each to control the output of 220V/400V/480V/540V/600V/800V separately.
2. Push-button switch is used to control the output of the contactor. Each loop contactor interlock can only have one voltage output.
3. Only the same voltage gear can be used when multiple loops work at the same time.
4. The equipment is equipped with temperature monitoring (winding temperature, core temperature) switching, and the fan is started to cool when the internal temperature is higher than 60 degrees Celsius, and the fan is stopped when the internal temperature is lower than 45 degrees Celsius. Alarm sound occurs when the internal winding temperature exceeds135 degrees Celsius. The transformers automatically shuts down the total input power when the temperature is greater than 150 degrees Celsius.
5. Product total weight 2000KG.

Electric Characteristics
 

1	Connection Group	Dyn11
2	Rated capacity of primary winding	350kW
3	Rated capacity of sencondary winding	350kW
4	Primary rated line voltage (N1/N2/N3/N4)	(220/400/480/540/600/800) *4 / Y connection, with N At 400V and above to meet the full power, The power of each group shall not exceed 87.5KW; The total power at 220V is 193KW
5	Secondary rated line voltage N5	380V / D connection
6	Primary side impedence	N1=N2=N3=N4, duplex winding
7	Mains voltage fluctuation	< +/-5%
8	Working frequency	50~70Hz
9	Efficiency	>97.5% (350kW resistive load)
10	The load cycle	Continous operation
11	Impedence voltage	<6%
12	Type of transformer	Dry type
13	The temperature sampling	Thermistor (NTC) temperature switch
14	Isolation resistance	P,S,E>500MΩ   DC2500V/60s
15	Dielectric strength	<20mA  3KVAC/60s Coil-Core N1/N2/N3/N4-N5
16	Isolation grade	H(180ºC)
17	Allowable temperature rise	95K (rated current, forced air cooling)
18	Noise	<70dB (measured with a sound level meter at 1m)
19	Cooling type	AF (Forced air cooling, control panel with independent control switch)