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ZPSFG dry type speed regulation transformer -8

The insulation class of ZPSFG series speed control by frequency variation dry transformer is Grade H: the high-tech product NOMEX paper of American DuPont Company is taken as the insulation material; structure and electrical design are conducted with the advanced technology and advanced process. The iron core material of the series product is the high-quality cold rolled grain-oriented silicon steel sheet; the grid side and valve side coil is wound with the high-quality oxygen-free copper conductor, and VPI vacuum pressure lacquer curing process is adopted for treatment. The product performance indicators shall completely conform to requirements in JB/T 8636-1997 industrial standards and IEC61378 international standards.

Technical parameters
External dimensions of the product
Features

Model description:

Technical parameters:

Product model	Grid side winding			Valve side winding	Short-circuit impedance %
	Voltage (kV)	Tapping range	Wiring method	Phase shift coil unit and group number
ZPSFG-250/6	6	±5%	Y or D	Unit number (4 or 7) group number 3	6～8
ZPSFG-300/6
ZPSFG-400/6
ZPSFG-500/6
ZPSFG-680/6
ZPSFG-750/6
ZPSFG-850/6
ZPSFG-1000/6
ZPSFG-1250/6
ZPSFG-1500/6
ZPSFG-1750/6
ZPSFG-2250/6
ZPSFG-2500/6

Product model	Exterior dimensions	Weight
Product model	(L × W × H)	(kg)
ZPSFG-250/6	1400×880×1250	1100
ZPSFG-300/6	1450×880×1300	1330
ZPSFG-400/6	1480×880×1300	1580
ZPSFG-500/6	1480×880×1500	1850
ZPSFG-680/6	1500×880×1630	2220
ZPSFG-750/6	1500×880×1650	2400
ZPSFG-850/6	1520×960×1650	2700
ZPSFG-1000/6	1520×1000×1650	3000
ZPSFG-1250/6	1550×1000×1680	3500
ZPSFG-1500/6	1580×1040×1850	3900
ZPSFG-1750/6	1650×1040×1900	4150
ZPSFG-2250/6	1850×1040×1900	5000
ZPSFG-2500/6	1860×1040×1950	5300

1. The high-quality cold-rolled silicon steel sheet is adopted for the iron core. 45⁰ fully-beveled seam, 3-step overlapping, which effectively reduces the no-load loss, no-load current and noise.

2. The grid side and valve side winding shall be Level H insulation, thermal endurance class 180⁰C, the coil is wound with oxygen-free copper wire wrapped with nomex paper. The special process and structure are adopted, and it is immersed in paint with VPI vacuum pressure for high-temperature curing, which not only improves mechanical strength of the product, but also can enable it to have the overload capability to withstand shock cooling and shock heating.

3. The cooling mode is air cooling, and the thermostat is equipped to realize fan start-stop, overtemperature alarm trip and other functions.

4. There are many pulse waves within a cycle for the valve side winding adopting multi-section phase shift after rectification, which effectively reduces pollution of harmonic wave on power grid.