150kVA Dry-Type Distribution Transformer of Class 6-10kv

Product Description

Model meaning




Overview & features
As the coils of resin-insulated dry-type transformer are encapsulated by the epoxy resin, they are nonflammable, fireproof, explosion-proof, maintenance-free, no pollution, small volume, and can be installed in the load center directly. Meanwhile, the scientific and reasonable design and casting technology enable the products to have lower discharge capacity, low noise and strong heat dissipation, they are able to run for a long time under 140% rated load under forced air cooling condition. Besides, the products are equipped with intelligent temperature controllers, have functions of trouble alarm, over-temperature alarm, over-temperature tripping and black box, can be connected with the computer through RS485 serial interface to realize centralized monitoring and control.
Due to the above features, our epoxy resin casting dry type transformers can be widely applied to power transmission and transformation systems in hotels, restaurants, airports, high-rise buildings, commercial centers, residential districts, and the severe environments such as underground railways, smelting, electric power plants, steamships, offshore oil-drilling platforms, etc.

Iron core
The iron core is made of imported cold-rolled silicon steel sheets with inclined joint structure, core limbs are bound by unidirectional weftless tape of class F. 
Surface of iron core is encapsulated with epoxy resin, which reduces the no-load noise, no-load current and core noise. 
Clamps and fasteners have gone through special surface treatment that further improves the product appearance quality. 

High-voltage winding 
High-voltage winding applies vacuum casting of stuffing epoxy resin which sharply reduces partial discharge capacity and enhances the electric strength of coils. The inside and outside of the winding is buildup with glass fiber grid overlay which strengthens the mechanical robustness of coils and product's short-circuit withstand capability, the coil will not split forever.

Low-voltage winding 
Low-voltage winding applies foil structure which solves the problem of axial helix angle when winds and make the ampere-turn of winding distribute evenly. Meanwhile, the coils adopt axial cooling duct to improve the heat dissipation. Between the layers of winding, it applies DMD epoxy resin preliminary immersed cloth and makes it whole solidification forming.

Manufacturing process
The coils are wound on high precision winding machine. We adopt foil type winding structure for low-voltage windings. Transformers of larger capacity are equipped with ventilating duct. It is vacuum drying, casting and solidification followed the winding, all processes are operated accord with the technological requirements under strict monitoring and may be regulated as appropriate. The precise manufacturing of casting ensures no bubble or cavity in coil, and gets high quality operation of transformer finally. 

Temperature control and air cooling systems
It adopts crossflow top-blow fan which is featured with low noise, high wind pressure and good looking, etc., it improves the safety and reliability of the operation of transformer.

Protective shell and outgoing bus 
The shell makes further protection for the transformer. For user's option, the grade of protection has IP20, IP23, etc. Shell materials include cold-rolled steel sheets, stainless steel sheets and so on for option. The low-voltage outgoing adopts standard outgoing bus, side outgoing and top outgoing are available, or design special outgoing modes for users.

Service conditions
A. Installation height: altitude shall not exceed 1000m; 
B.Waveform of source voltage is approximate to sine wave; 
C.Symmetry of multi-phase source voltage:
   connected voltage of multi-phase transformer should be symmetrical approximately.
D. Ambient temperature:
   Max temperature +40ºC
   Max daily mean air temperature: +30ºC 
   Max annual mean air temperature: +20ºC
   Min air temperature: -30ºC (applicable for indoor transformers)

Dimensions & Schematic

Rated capacity	Installation dimension
(kVA)	L	W	H	C1	C2
30	580	405	600	300	300
50	620	475	730	300	350
80	900	500	820	450	450
125	970	500	890	450	450
160	1060	650	930	550	550
200	1100	650	985	550	550
250	1140	760	1070	550	550
315	1170	760	1130	660	660
400	1260	760	1155	660	660
500	1300	760	1190	660	660
630	1370	760	1220	660	660
800	1440	760	1225	660	660
1000	1480	920	1330	820	820
1250	1580	920	1480	820	820
1600	1660	920	1550	820	820
2000	1720	920	1710	820	820
2500	1820	920	1780	1070	1070

Technical parameters

Rated capacity	Voltage combination			Connection group	Loss (KW)		No-load current	Short-circuit impedance	Weight (kg)
(kVA)	HV(kV)	High-voltage tapping range	LV(kV)	symbol	No-load	On-load(120°)	(%)	(%)	Body weight	Weight with shell
30	6 6.3 6.6 10 10.5 11	±5% ±2×2.5%	0.4	Yyn0 Dyn11	0.22	0.75	3.2	4.0	220	250
50					0.31	1.05	2.8		360	410
80					0.42	1.46	2.6		450	190
100					0.45	1.67	2.4		540	580
125					0.53	1.95	2.2		630	670
160					0.61	2.25	2.2		745	795
200					0.70	2.67	2		850	910
250					0.81	2.92	2.2		1010	1065
315					0.99	3.67	1.8		1235	1295
400					1.10	4.22	1.8		1370	1430
500					1.35	5.17	1.8		1565	1625
630					1.51	6.22	1.6		1855	1930
630					1.46	6.31	1.6	6.0	1800	1875
800					1.71	7.36	1.6		2140	2215
1000					1.99	8.60	1.4		2535	2620
1250					2.35	10.26	1.4		3100	3190
1600					2.75	12.42	1.4		3705	3830
2000					3.74	15.30	1.2		4230	4380
2500					4.50	18.18	1.2		5230	5280

FAQ
1.Payment term
T/T 30% deposit and 70% blance agaisnt copy of B/L.

2.Delivering time
After get 30% deposit, take 25days for manufacturing. Depands on your purchasing quantity.

3.Why Honle?
After 15 years experience in manufacturing voltage stabilizers, voltage regulato, power inverter, we can guarantee the highly quality,3 time tesing before delivering. CE / ISO-9001 certifications.