JDJJ2-11 Model Outdoor Oil-Immerse Potential Transformer

• Customization: Available
• Application: Power, Electronic, Instrument, Lighting
• Phase: Single
• Model NO.: JDJJ2
• Cooling Method: Oil-immersed Type Transformer
• Certification: CE
• Usage: Single-phase Transformer, Combined Transformer
• Brand: Honle
• Installation: Active Type
• Magnetic Circuit Structure: Combined Type
• Voltage Transformation Principle: Photoelectric Type
• Transport Package: Standard Export Packing
• Trademark: HONLE
• Origin: Zhengjiang, China
• HS Code: 8504311000
• Production Capacity: 500000 Pieces Per Year

Product Description

JDJJ2-11 Model outdoor Oil-Immerse Potential Transformer

Product Description

General Summary:

Application
Series JDJJ2 of non-earthed voltage transformer is single-phase, oil-immersed. It's designed for voltage, electric energy measurement and relay protection in a ineffectively earthed neutral point power system with rated frequency of 50Hz and rated voltage of 11kV.

Service Condition

• Altitude: up to 1000m above sea level;
• Ambient temperature: -25ºC to +40ºC;
• Relative humidity: 85%,at 20ºC

Construction
The voltage transformer is single-phase, three-winding and core type. The active parts are attached to tank cover and put in square oil-tank. The terminals of windings are led out of tank through HV and LV bushings respectively. The conservator is located on the top of HV bushing on which primary terminal is fixed and provided with rubber diaphragm inside to avoid oil from contacting with air. The conservator is fitted with oil level gauge. The tank is provided with drain valve at bottom and mounting holes on the base for fixing. Oil tank and bushing, filled with transformer oil is oilpaper-insulated structure and the conservator is.

Technical Data
Performance conforms to IEC-186 standard and GB1207-1997 "Voltage transformer".
Rated primary voltage:11000/√3V;
Rated secondary voltage:110/√3V;
Rated primary current :15,20,30,40,50,75,100,150,200,300,400,600,700 and 1000
Rated secondary current 5A
Rated voltage of residual voltage winding:110/√3V;
Rated voltage factor and duration:1.9;  8h.
The rated output of secondary winding and corresponding accuracy class: 150VA class 0.5, 250VA class1, 500VA class3.
Max. Output: 1000VA;
Residual voltage winding is 100VA and class 6P;
Rated insulation level:
Power frequency withstand voltage:95kV;
Lightning impulse withstand voltage: Full wave, 185kV Chopped wave, 220kV.
The voltage transformer is able to operate continuously under 1.2 times rated primary voltage.

 Table 1. The relationship between rated secondary load and accuracy grade

Specification and model	Accuracy grade or no	Rated secondary load(Ω)
		0.5grade	1grade	3grade	10grade
JDJJ2-11-0.5/3	0.5	2	4	-	-
JDJJ2-11-D/0.5 JDJJ2-11-0.5/1 JDJJ2D-11-D/0.5	0.5	1.2	3		-
JDJJ2-11-0.5/1	1		1.2	3	-
JDJJ2-11-0.5/3	3			2	4
JDJJ2-11-D/0.5	D		1.2	3	-

Table 2.10% multiple of this type of PT
The maximum current multiple of this type of PT

 

 

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