Rockwill dry type cast resin power transformers are in conformity with standard of IEC726,GB6450, GB/T10228-1997.with features low loss, compact and light weight low noise, damp-proof, anti-fouling, high mechanical strength, flam resisting, strong overload ability.

Cast resin type dry power transformer

The product of this latest series are resin cast transformers reinforced by glass fiber grid. Resin is fed by flow control pump and static control in order to prevent coils from alligator crack. The advanced cast technique ensures the resin mixture fully immerses into the space between turns and segments in order to ensure the dielectric strength and minimum partial discharge(≤5PC).

Environmental Conditions:

1. Altitude: ＜1000m indoor
2. Max .ambient: temperature +40℃
3.Max. daily: average temperature +30℃
4.Max .annual: average temperature +20℃
5.Min. temperature -5℃
6.Supply transformer operate under special conditions according to customer requirements.

Main Characteristics:

1.Low no-load loss and energy conservation

2.Low noise and environmental protection

3.Long service lifetime and safe and reliable performance

4.Reasonable and aesthetic structural design and exquisite manufacture craftsmanship

5.A full variety of accessories and appropriate protection measures

Standard of Products:

GB1094.1-1996, GB1094.2-1996, GB1094.3-2003, GB1094.5-2008, GB1094.7-2008,

GB/T6451-2008, JB/T10217-2000, etc

SC(B)10 series resin-cast power transformers are in conformity with standard of IEC726,GB6450, GB/T10228-1997.with features low loss, compact and light weight low noise, damp-proof, anti-fouling, high mechanical strength, flam resisting, strong overload ability and low partial discharge quanlity. They are applicable to power transformation and distribution, hotel, restaurant commercial building, chemical plants, rail station, airport ａnd other heavy load center

Above mentioned parameters are only for reference, ROCKWILL is able to design products according to specific requirements from end users.

35KV dry type power transformer with off-load tap changer

Rated capacity (KVA)	Rated Voltage(KV)			Coupling group		Loss(W)		No-load current(%)	Noise (B)
Rated capacity (KVA)	HV	Tap change	LV	Coupling group	Impedance voltage(%)	N0-load	Load	No-load current(%)	Noise (B)
800	35 or 38.5	±5% or ±2×2.5%	3.15,6 ,6.3,10 10.5 or 11	Yyn0 Dyn11	6	2220	8180	0.6	50
1000						2640	9480		52
1250						3090	11210		52
1600						3640	13440	0.5	53
2000					7	4180	15830		54
2500					7	4800	18970		56
3150					8	5960	21280	0.4	56
4000						6930	25570		55
5000						8270	30350		58
6300						9780	35460	0.3
8000					9	11200	40000
10000						12800	48250
12500						15560	56080	0.2	60
16000						19110	65980		61
20000					10	22670	74230		62

35kV Dry Type Power Transformer With Off-circuit Tap Changer

Nominal Capacity（ kVA ）	Voltage unit combination		LV	Vector group	No-load loss(W)	Load loss(W)		No-load Current(%)	Short- circuit impedance
Nominal Capacity（ kVA ）	HV	High Voltage Tap range	LV	Vector group	No-load loss(W)	F(120℃ )	H(120℃ )	No-load Current(%)	Short- circuit impedance
800	35 36 37 38.5	±2*2.5%or±5%	3.15 6 6.3 10 10.5 11	Yyn0 Yd11 Dyn11	2250	9400	10000	0.95	6
1000					2670	10900	11600	0.95
1250					3130	12900	13800	0.85
1600					3690	15400	16500	0.85
2000					4230	18200	19500	0.75	7
2500					4860	21800	23300	0.75	7
3150					6030	24500	26200	0.7	8
4000					7020	29400	31500	0.7
5000					8370	34900	37400	0.6
6300					9900	40800	43700	0.6
8000				Yyd11 Yd11 Dyn11	11300	46000	49300	0.5	9
10000					12900	55500	59400	0.5
12500			6 6.3 10 10.5		15700	64600	69100	0.4
16000					19300	76000	81300	0.4
20000					22900	85500	91500	0.35	10
25000					27100	101000	108000	0.35	10

35kV Dry Type Power Transformer With On Load Tap Changer

Nominal Capacity（ kVA ）	Voltage unit combination		LV	Vector group	No-load loss(W)	Load loss(W)		No-load Current(%)	Short- circuit impedance
Nominal Capacity（ kVA ）	HV	High Voltage Tap range	LV	Vector group	No-load loss(W)	F(120℃ )	H(120℃ )	No-load Current(%)	Short- circuit impedance
2000	35 36 37 38.5	±4*2.5%	3.15 6 6.3 10 10.5 11	Yd11 Dyn11	4500	19000	20300	0.75	7
2500					5220	22600	24200	0.75	7
3150					6300	25400	27200	0.7	8
4000					7380	30400	32600	0.7
5000					8730	36100	38600	0.6
6300					10300	41800	44700	0.6
8000					11800	47500	50800	0.5	9
10000					13500	57100	61200	0.5
12500					16400	66500	71100	0.4
16000					20200	78200	83700	0.4
20000					23800	88000	94200	0.35	10
25000					28100	10400	111000	0.35	10

We are focusing on power transmission & distribution equipment business, and we have been specialized in this industry for more than 20 years and gaining the trust of our customers all over the world. We can offer you the best price and products for selling in your country, and we also hope you can contact us for a RFQ or RFP for starting our cooperation.