Three-Phase Three-Dimensional Roll-Core Distribution Transformer

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Three-dimensional roll-core distribution transformer is a kind of energy-saving power transformer. It creatively upgrades the laminated magnetic structure and three-phase layout of traditional power transformers, which optimizes the performance of transformers. The three-phase magnetic circuit is completely symmetric, with significant power-saving effect, greatly decreased noise, high heat dissipation performance, strong overload capacity, more compact structure and smaller volume.

Product introduction

Working Conditions:

No.	Conditions		Units	Parameter Values
1	Pollution Grade			IV
2	Ambient Temperature	Maximum Daily Temperature	℃	40
		Minimum Daily Temperature	℃	-45
		Maximum Daily Temperature Difference	K	25
		Average Temperature of the Hottest Month	℃	30
		Maximum Annual Average Temperature	℃	20
3	Humidity	Average Daily Relative Humidity	%	≤95
3	Humidity	Average Monthly Relative Humidity	%	≤90
4	Altitude		m	1000
5	Solar Radiation Intensity		W/cm²	0.1
6	Maximum Icing Thickness		mm	10
7	Maximum average wind speed: keeping in good conditions for 10min at 10m from the ground level		m/s	35
8	Earthquake Resistance	Horizontal Ground Acceleration	m/s²	2
8	Earthquake Resistance	Safety Coefficient of 3 Since Resonance Cycles		≥1.67
9	Installation Site			Outdoor
Note 1: Working conditions in high altitude regions (above 1000m) must be adjusted in conformity with Q/GDW 13001-2014 (High Altitude External Insulation Configuration Technical Specification).

Product Parameters:
Table 1 30kVA ~ 1600 kVA, Three-Phase Duplex Windings, No-Load Voltage Regulation, Distribution Transformer

Rated Capacity (KV.A)	Voltage Combination & Tapping Range			Connection Symbol	No-Load Loss (kW)	On-Load Loss (kW)	No-Load Current (%)	Short-Circuit Impedance (%)	Acoustic Power Level dB(A)
Rated Capacity (KV.A)	High Voltage (kV)	High Voltage Tapping Range (%)	Low Voltage (kV)	Connection Symbol	No-Load Loss (kW)	On-Load Loss (kW)	No-Load Current (%)	Short-Circuit Impedance (%)	Acoustic Power Level dB(A)
30	6 6.3 10 10.5 11	±5	0.4	Dyn11 Yzn11 Yyn0	80	630/660	0.30	4.0	48
50					100	910/870	0.24
63					110	1 090/1 040	0.23
80					130	1 310/1 250	0.22		49
100					150	1 580/1 500	0.21		49
125					170	1 890/1 800	0.20		50
160					200	2 310/2 200	0.19		50
200					240	2 730/2 600	0.18		52
250					290	3 200/3 050	0.17		52
315					340	3 830/3 650	0.16		54
400					410	4 520/4 300	0.16		54
500					480	5 410/5 150	0.16		56
630				Dyn11 Yyn0	570	6 200	0.15	4.5	56
800					700	7 500	0.15		58
1 000					830	10 300	0.14		58
1 250					970	12 000	0.13		60
1 600					1 170	14 500	0.12		60
Note 1: If the rated capacity is 500kV.A or below, the data of “On-Load Loss” on the left of slash (/) is suitable for Dyn11 or Yzn11, on the right for Yyn0. Note 2: Transformers with ±2×2.5% of high voltage tapping range can also be supplied upon demands. Note 3: Transformers with 0.69kV of low voltage can also be supplied upon demands. Note 4: Other loss values can also be used upon demands.