Type MZ on-load tap changer

• Type: Type MZ On-Load Tap Changer
• Certification: ISO9001
• Brand: Wukai
• Transport Package: Composite Wood Crating
• Origin: China

Product Description

1. Overview
MZ series on-load tap changers are suitable for rated voltage 35~220kV rated current three in 500A, 600A, single-phase 500A~1200A, frequency 50Hz three-phase Y-connection neutral regulator, single-phase arbitrary connection and regulator of the power transformer or industrial transformer, in the case of load with the change of taps to achieve the adjustment of line voltage.
2. Technical data 

Serial No.	Category
1			MZ-III600	MZ-I600	MZ-I800	MZ-I1200	MZ-I1500
2	Max. rated through-current(A)		600	600	800	1200	1500
3	Rated frequency (Hz)		50
4	No. of phases and connections		Three-phase Y-connection		Single-phase arbitrary connection
5	Max. step voltage (V)		3300
6	Rated capacity (kVA)		1500	1980	2640	3500	3500
7	Short-circuit capacity (kA)	Thermal stability (three seconds RMS)	8	8	16	24	24
8		Dynamic stability (peak)	20	20	40	60	60
9	No. of working positions		The slot wheel is divided into 10, 12, 14, 16, and 18 gears, without a pole selector maximum of 18, with a polarity selector max. 35.
10
11	Tap changer insulation level	Unit (kV)	Insulation level
12			35	60	110	220
13		Max. working voltage	40.5	72.5	126	252
14		Power frequency test voltage (1min)	85	140	230	460
15		Impulse test voltage (1.2/50)	200	350	550	1050
16	Tap selector		4 sizes by insulation level, numbered A, B, C, D
17	Mechanical life		Not less than 800,000 times
18	Electrical life		Not less than 100,000 times
19	Toggle switch mailbox	Working pressure	3×10^4Pa
20		Sealing property	6×10^4Pa, No leakage for 24 hours
21		Overpressure protection	Bursting cap 2x10^5Pa
22		Keep relay	Rectified oil speed 1.0m/s earth 10%
23	Discharge volume		About 190~270L
24	Filling volume		About 125~190L
25	Weight		About 260~280kg
26	Fitted motor-drive unit		DQB

3. Dimensional illustration

FAQ

1. Q: What are your main products?
A: The company has specialized in producing on-load tap changers for more than 40 years, with products covering power transformers, furnace transformers, special transformers, and other industries.
2. Q: Are you a manufacturer?
A: Yes. Our company is a professional manufacturer of on-load tap-changers, with its own factory and production line, covering an area of 20,000 square meters, with over 100 employees, and nearly 100,000 units of products currently operating in the network. We also provide OEM and ODM services.
3. Q: How do you control the quality of your products?
A: We have a complete quality control system for each production process. After the production, all goods will be tested according to the relevant standards, and the factory inspection report will be sent with the shipping documents.
4. Q: What's your payment terms?
A: We usually accept all kinds of payment terms, T/T, L/C, etc.
5. Q: What are your products packaged for transportation?
A: We ship in composite wood crates.
6. Q: What kind of credentials do you have?
A: Quality management system certificate, High-tech enterprise certificate, etc.
7. Q: Can I come to visit your factory?
A: Of course, you are very welcome to visit our factory.