250kVA Distribution Transformer for Wind Generating with IP54 Protection Grade Case

• Application: Power, Electronic, Instrument, Lighting, Rectifier
• Phase: Three
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001, CCC
• Model NO.: E-00043A
• Usage: Rectifier Transformer, Combined Transformer, Power Transformer
• Frequency Characteristics: Power Frequency
• Shape of Core: Silicon Steel Sheet
• Brand: Bc Power
• Supply Voltage Fluctuation: <+/-3%
• Temperature Sampling: Thermistor Ntc Temperature Switch
• Isolation Grade: Class H (180 C)
• Connection Group: Dyn11
• Rated Capacity of Primary Winding: 250kw
• Rated Capacity of Secondary Winding: 250kw
• Primary Rated Line Voltage: 1140V
• Secondary Rated Line Voltage: 690V/400V
• Efficiency: >98%
• Temperature Rise: 115K
• Transport Package: Wooden Case
• Specification: 1000*800*1200 mm, weight<1200KG
• Trademark: BC POWER or Customized
• Origin: Dongguan City, Guangdong Province, China
• Production Capacity: 240-360 PCS/Year

Product Description

1. The primary side is 1 loop with 6 contactors are configured each to control the output of 220V/400V/480V/500V/540V separately.
2. Push-button switch is used to control the output of the contactor. The loop contactor interlock can only have one voltage output.
3. 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.
4. Product total weight nearly 1500KG.

Electric Characteristics
 

Item	Parameter	Value	Remark
1	Model Number	BC-E00043A
2	Phase number	Three Phase
3	Rated Capacity	250KVA
4	Rated Input Voltage	1140V
5	Rated Output Voltage 1	690V
6	Rated Output Voltage 2	400V
7	Rated Load Voltage Percentage Deviation	+/-3%
8	Connection Group	Dyn11
9	Insulation Grade	H
10	Temperature Rise	<115K	Hottest spot in the coil at rated load
11	Efficiency	>98%	145ºC
12	Cooling Type	AN	Natural air cooling
13	Rated short circuit impedance percentage	(2.5+/-1)%
14	Rated load input current	126.6A
15	Peak excitation inrush current	<10In	at rated voltage
16	690V rated load output 1 current	120A
17	400V rated load output 1 current	90A
18	400V rated load output 2 current	32A
19	400V rated load output 3 current	32A
20	400V rated load output 4 current	16A
21	230V rated load output current	16A
22	Overload capacity	1.1In/1.1Un	Ambient Temperature 25ºC
23	Measured no-load current	Max 3A
24	Operation mode	Rated load
25	Noise label	<65dB	1 meter horizontal distance
26	Primary side to secondary side isolation voltage intensity	<10mA, no arcing, no breakdown	3KV AC, 60S
27	Primary side to ground isolation voltage intensity	<10mA, no arcing, no breakdown	3KV AC, 60S
28	Secondary side to ground isolation voltage intensity	<10mA, no arcing, no breakdown	3KV AC, 60S
29	Primary side to ground insulation impedance	>100MΩ	500VDC
30	Secondary side to ground insulation impedance	>100MΩ	500VDC
31	Primary side to secondary side insulation impedance	>100MΩ	500VDC
32	Local discharge limit	N/A
33	Cabinet protection grade	IP54
34	Thermostat type	Normally closed restorability
35	Thermostat operating temperature	160+/-5ºC
36	Thermostat qty	2
37	Thermostact connection type	parallel connection
38	Iron yoke material	Non-oriented silicon steel sheet
39	Iron yoke brand	30A150
40	Rated flux density	1.297
41	Saturation flux density	1.7T
42	Primary coil material	Copper
43	Secondary coil material	Copper
44	Primary coil section	72 mm2
45	Secondary coil section	60 mm2
46	Primary current density	1.75 A/mm2
47	Secondary current density	2.0 A/mm2
48	Primary side number of windings	148TS
49	Secondary side number of windings	52TS/30TS