transformer – Yueqing Weixin Electric Technology Co., Ltd

Vertical single-phase electronic transformer network high-frequency PM0531NL

lewsin — Sat, 15 Jul 2023 10:38:09 +0000

Electronic transformer is a new type of electrical energy conversion equipment, which not only has the basic functions of voltage conversion, electrical isolation, and energy transfer that traditional power transformers have, but also can achieve additional functions such as power quality regulation, system flow control, and reactive power compensation. The reason why power electronic transformers can achieve these additional functions is mainly because they can flexibly process and control the amplitude and phase of the voltage or current of the primary and secondary sides of the transformer by introducing power electronic conversion technology and control technology, and can control the power flow of the system according to actual needs. Therefore, power electronic transformers can achieve more stable and flexible transmission, and can solve many problems in today’s power system. Their application prospects will also be very broad. [1] Compared with traditional power transformers, PET has the following characteristics: ① Small size and light weight; ② It can be cooled with air, does not require insulation oil for isolation, reduces pollution, and is easy to maintain with good safety; ③ Capable of producing a constant amplitude voltage output from the secondary side of the transformer; ④ It can improve power quality, obtain sine waveform input current and output voltage, and achieve unity power factor. The voltage and current on both sides of the transformer are controllable, so the power factor can be adjusted arbitrarily; ⑤ Having the function of a circuit breaker, high-power power electronic devices can instantly (in microseconds) turn off high fault currents, eliminating the need for relay protection devices. In addition, power electronic transformers also have some special uses, such as: after being connected to batteries, they can improve the reliability of power supply; Capable of achieving special transformation functions from three-phase to two-phase or from three-phase to four phase; Capable of outputting both AC and DC power simultaneously. In the literature, the author conducted a simulation comparison and analysis of conventional power transformers and self balancing power electronic transformers. The literature mainly focused on five working conditions for simulation research. From the simulation results, PET has good input-output characteristics under full load rated operation, low-voltage side single-phase disconnection, three-phase short circuit, as well as high-voltage side three-phase voltage imbalance and harmonic pollution. It can avoid the impact of one side system imbalance on the other side system, and therefore has better performance than conventional power transformers。

Glue filled transformer

lewsin — Sat, 15 Jul 2023 10:22:35 +0000

This utility model relates to a glue filled transformer It includes a winding base with a coil wound on a silicon steel sheet. The primary and secondary coils in the coil are connected to metal pins and output wires, respectively. An insulating material and an outer shell are also wrapped on the outside. The insulating material is made of polyester resin mixed with calcium carbonate and hardener for solidification The outer shell is a one-piece molded body made of polyvinyl chloride material Through the above design, the transformer can be directly integrated with insulation material and outer shell in the mold, forming excellent sealing insulation protection. Moreover, through its special insulation material composition design, the transformer has excellent high voltage resistance, waterproof performance, and heat conduction effect
A glue filled transformer has a winding base, and coils are wound on the silicon steel sheets of the winding base. The primary and secondary coils in the coils are respectively connected to metal pins and output wires, and then coated with an insulation material and an outer shell. The characteristic is that the insulation material is coated on the outer side of the winding base and cured by mixing polyester resin with calcium carbonate and hardener. It is completely filled inside the outer shell made of polyvinyl chloride material to form a solid body.

Electronic switch power supply transformer, high voltage isolation transformer

lewsin — Sat, 15 Jul 2023 10:12:47 +0000

Material description of transformer:
① Iron core
We use brand new high-quality high silicon steel sheets, mainly made of 0.35 thick H18, H14, H12, Z11 high-quality silicon steel sheets. Based on the requirements and usage conditions of the guest room, we select the most suitable materials to achieve the best performance design of the transformer. (The conventional material is brand new high-quality silicon steel sheet).
② Wire rod
We use PEW, UEW, EIW, SEIW, FEAI enameled wire and glass fiber wrapped wire, with temperature resistance levels of F (155 ℃), H (180 ℃), HC (200 ℃), and C (220 ℃). (The conventional temperature resistance level is H-level 180 ℃).
③ Insulation material
Using high-temperature resistant insulation paper as the insulation material, it has multiple properties including high-temperature insulation, flame retardancy, and moisture resistance.
④ Wiring terminal block
Low power adopts terminal block, with beautiful appearance, excellent pressure resistance, temperature resistance, and flame retardant performance. High power uses high-quality copper bars.
⑤ Iron feet
Mainly using CNC bending cold plate, there are environmentally friendly electroplating options available, such as plating with colorful (golden), blue zinc (silver white), white zinc (ivory white), and surface anodizing (black).
Normal working conditions:
1. The upper limit of ambient air temperature shall not exceed+40 ℃:
2. The average temperature of the surrounding air for 24 hours shall not exceed+30 ℃:
3. The lower limit of ambient air temperature shall not be lower than -5 ℃:
4. Altitude: The altitude of the installation location shall not exceed 2000 meters
5. Atmospheric conditions: The relative humidity of the atmosphere should not exceed 50% when the surrounding air temperature is+40 ℃. Higher relative temperatures can occur at lower temperatures, with an average maximum relative humidity of 90% in the wettest month and an average minimum temperature of+25 ℃. Additionally, condensation on the product surface due to temperature changes should be taken into account
6. Pollution level: Pollution level is level three:
7. Installation category (overvoltage category): Installation category is Class III:
8. Power supply voltage: allowable deviation of power supply voltage ± 5%:
9. Installation conditions: Install in a place without severe vibration and impact vibration.
Scope of application:
Posts and telecommunications, shopping malls, elevators, hospitals, schools, printing, securities and other places that require normal voltage, as well as large and medium-sized industrial and mining enterprise workshops, some power supply and important equipment and single machine matching.

BK series control transformer

lewsin — Thu, 29 Jun 2023 08:22:59 +0000

The JMB series lighting transformer is suitable for use as a local lighting power supply for machine tools and other equipment in circuits with a frequency of 50Hz and a voltage of 500V and below. The JMB series transformer consists of a BK series transformer and a protective casing. The casing has terminal posts on both sides for input power and load wiring, as well as grounding screws for grounding; The BZ type lighting transformer is composed of BK-50, BK-100 control transformers, LS3-2 type master switch, and protective housing. A fuse is installed on the master switch to protect the lighting circuit, and the power supply is provided from the dust-proof film at the end where the master switch is installed.
Material description of transformer:
① Iron core
We use brand new high-quality high silicon steel sheets, mainly made of 0.35 thick H18, H14, H12, Z11 high-quality silicon steel sheets. Based on the requirements and usage conditions of the guest room, we select the most suitable materials to achieve the best performance design of the transformer. (The conventional material is brand new high-quality silicon steel sheet).
② Wire rod
We use PEW, UEW, EIW, SEIW, FEAI enameled wire and glass fiber wrapped wire, with temperature resistance levels of F (155 ℃), H (180 ℃), HC (200 ℃), and C (220 ℃). (The conventional temperature resistance level is H-level 180 ℃).
③ Insulation material
Using high-temperature resistant insulation paper as the insulation material, it has multiple properties including high-temperature insulation, flame retardancy, and moisture resistance.
④ Wiring terminal block
Low power adopts terminal block, with beautiful appearance, excellent pressure resistance, temperature resistance, and flame retardant performance. High power uses high-quality copper bars.
⑤ Iron feet
Mainly using CNC bending cold plate, there are environmentally friendly electroplating options available, such as plating with colorful (golden), blue zinc (silver white), white zinc (ivory white), and surface anodizing (black).
Normal working conditions:
1. The upper limit of ambient air temperature shall not exceed+40 ℃:
2. The average temperature of the surrounding air for 24 hours shall not exceed+30 ℃:
3. The lower limit of ambient air temperature shall not be lower than -5 ℃:
4. Altitude: The altitude of the installation location shall not exceed 2000 meters
5. Atmospheric conditions: The relative humidity of the atmosphere should not exceed 50% when the surrounding air temperature is+40 ℃. Higher relative temperatures can occur at lower temperatures, with an average maximum relative humidity of 90% in the wettest month and an average minimum temperature of+25 ℃. Additionally, condensation on the product surface due to temperature changes should be taken into account
6. Pollution level: Pollution level is level three:
7. Installation category (overvoltage category): Installation category is Class III:
8. Power supply voltage: allowable deviation of power supply voltage ± 5%:
9. Installation conditions: Install in a place without severe vibration and impact vibration.
Scope of application:
Posts and telecommunications, shopping malls, elevators, hospitals, schools, printing, securities and other places that require normal voltage, as well as large and medium-sized industrial and mining enterprise workshops, some power supply and important equipment and single machine matching.

SG/DG isolation transformer

lewsin — Thu, 29 Jun 2023 08:11:06 +0000

1、 Purpose:
The SG series isolated step-up and down transformer is a multi-purpose AC current power supply that isolates input and output, and can perform 220V and 380V three-phase AC conversion for both input and output. Easy to use, safe and reliable. All instruments and equipment that require isolation from the power grid and AC voltage conversion can use this product.
2、 Main technical indicators
1. Maximum output capacity

model

SG-25

SG-50

SG-90

SG-120

SG-150

SG-225

SG-315

SG-400

Output capacity (KVA)

120

150

225

315

400

2. Input voltage: three-phase 220V, 380V optional
3. Output voltage: Three phase 220V, 380V optional
4. Power frequency: 50-60Hz
5. Insulation resistance:>5M Ω
6. Insulation strength: withstand voltage test with AC 2000V 1min.
3、 Structural features
Both the primary and secondary windings are made of electromagnetic copper wire. The transformer core adopts a core type core, which is made of stacked electrical silicon steel sheets. The iron column adopts a multi-stage stepped circular cross-section, and the iron yoke adopts a rectangular cross-section. Channel steel is used as clamping pieces on both sides of the upper and lower iron yokes, and clamping screws are used to tighten the iron yoke. The upper and lower clamping pieces are tightened by lifting screws to fix the coil.
4、 Working conditions
1. The altitude high voltage shall not exceed 1000 meters. If it exceeds 1000 meters, the capacity shall be converted according to the standard of power transformers.
2. The temperature of the surrounding medium shall not exceed+40 ℃.
3. The relative humidity of the air should not exceed 85%.
4. There is no strong vibration or severely corrosive gas.
5、 Usage method
1. Before use, users must select appropriate power wires and local grid voltage and transformer nameplates based on the transformer power, and correctly connect the power wires to the input terminals.
2. Connect the output wires to the appropriate output terminals based on the user’s required voltage.
3. The load shall not exceed the data specified on the nameplate.
4. Before turning on the power switch, check that the input and output power lines are connected correctly.
5. This series uses an air switch. If there is no corresponding AC voltage output after the air switch is closed, check whether the input and output wire connections are reliable.
6、 Customized special transformer input, output voltage, and connection method are determined according to the requirements of the customer.

Driving lamp lighting transformer JMB

lewsin — Thu, 29 Jun 2023 08:09:00 +0000

The JMB series lighting transformer is suitable for use as a local lighting power supply for machine tools and other equipment in circuits with a frequency of 50Hz and a voltage of 500V and below. The JMB series transformer consists of a BK series transformer and a protective casing. The casing has terminal posts on both sides for input power and load wiring, as well as grounding screws for grounding; The BZ type lighting transformer is composed of BK-50, BK-100 control transformers, LS3-2 type master switch, and protective housing. A fuse is installed on the master switch to protect the lighting circuit, and the power supply is provided from the dust-proof film at the end where the master switch is installed.
Material description of transformer:
① Iron core
We use brand new high-quality high silicon steel sheets, mainly made of 0.35 thick H18, H14, H12, Z11 high-quality silicon steel sheets. Based on the requirements and usage conditions of the guest room, we select the most suitable materials to achieve the best performance design of the transformer. (The conventional material is brand new high-quality silicon steel sheet).
② Wire rod
We use PEW, UEW, EIW, SEIW, FEAI enameled wire and glass fiber wrapped wire, with temperature resistance levels of F (155 ℃), H (180 ℃), HC (200 ℃), and C (220 ℃). (The conventional temperature resistance level is H-level 180 ℃).
③ Insulation material
Using high-temperature resistant insulation paper as the insulation material, it has multiple properties including high-temperature insulation, flame retardancy, and moisture resistance.
④ Wiring terminal block
Low power adopts terminal block, with beautiful appearance, excellent pressure resistance, temperature resistance, and flame retardant performance. High power uses high-quality copper bars.
⑤ Iron feet
Mainly using CNC bending cold plate, there are environmentally friendly electroplating options available, such as plating with colorful (golden), blue zinc (silver white), white zinc (ivory white), and surface anodizing (black).
Normal working conditions:
1. The upper limit of ambient air temperature shall not exceed+40 ℃:
2. The average temperature of the surrounding air for 24 hours shall not exceed+30 ℃:
3. The lower limit of ambient air temperature shall not be lower than -5 ℃:
4. Altitude: The altitude of the installation location shall not exceed 2000 meters
5. Atmospheric conditions: The relative humidity of the atmosphere should not exceed 50% when the surrounding air temperature is+40 ℃. Higher relative temperatures can occur at lower temperatures, with an average maximum relative humidity of 90% in the wettest month and an average minimum temperature of+25 ℃. Additionally, condensation on the product surface due to temperature changes should be taken into account
6. Pollution level: Pollution level is level three:
7. Installation category (overvoltage category): Installation category is Class III:
8. Power supply voltage: allowable deviation of power supply voltage ± 5%:
9. Installation conditions: Install in a place without severe vibration and impact vibration.
Scope of application:
Posts and telecommunications, shopping malls, elevators, hospitals, schools, printing, securities and other places that require normal voltage, as well as large and medium-sized industrial and mining enterprise workshops, some power supply and important equipment and single machine matching.

BK-400VA Control Transformer

lewsin — Thu, 29 Jun 2023 08:05:56 +0000

The BK series control transformer is suitable for use in AC circuits ranging from 50Hz to 60Hz. It serves as a control power supply for general electrical appliances in machine tools and mechanical equipment, as well as for local lighting and indicator lights.
The product complies with JB/T9646 standard.
Model and its meaning
Some common BK transformer models include:
BK-25VA,BK-50VA,BK-100VA,BK-150VA,BK-200VA,BK-300VA,BK-400VA
BK-500VA,BK-700VA,BK-1000VA,BK-1500VAMBK-2000VA,BK-3000VA
specifications
1. Rated capacity: 25 VA、50VA、100VA、150VA、200VA、250VA、300VA、400VA、500VA、700VA、1000VA、1500VA、2000VA、3000VA、5000VA。
2. Primary voltage: 220V, 380V or depending on user needs;
Secondary voltage: 6.3V, 12V, 24V, 36V, 110V, 127V, 220V, 380V or depending on user requirements.
Appearance and installation dimensions

model	Installation size		Mounting Hole	External dimensions
model	A	C	K*J	B	D	E
BK-25VA	64	45	6*7	80	78	95
BK-50VA	70	60	6*8	89	89	95
BK-100VA	82	64	6*8	99	107	114
BK-150VA	84	76	7*10	105	104	116
BK-250VA	102	87	7*10	119	114	134
BK-300VA	102	92	7*10	120	120	133
BK-500VA	111	106	7*10	135	148	147
BK-1000VA	126	126	7*10	151	161	166

The operating environment of this series of transformers
The ambient air temperature ranges from -5 ℃ to+40 ℃, with the highest monthly average temperature not exceeding+30 ℃;
The installation location shall not exceed an altitude of 1000m
The relative humidity of the atmosphere does not exceed 50% when the ambient air temperature is+40. At lower temperatures, there can be relatively high relative humidity, with an average maximum humidity of 90% in the wettest month and an average minimum temperature of+25 ℃.
If you would like to learn more about the BK series control transformers, such as product manuals, specifications, prices, maintenance, and other information, please contact us.