Combined Current/Voltage Transformer

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1. Product Overview
The JLSQ-10(35) combined current and voltage transformer is applicable to active power and reactive power metering in the outdoor AV three-phase power system with the rated frequency of 50 Hz or 60 Hz and the rated voltage of 10 or 35 kV. It conforms to the national standard of GB17201-1997 "Combined Transformer".

This product, independently developed by our company, has won national patent, and the patent number is No.ZL200420053872.6.

2. Product Structure
This combined transformer is composed of the main body and a kilowatt-hour meter box, with a fully enclosed structure. The kilowatt-hour meter box consists of either one active power meter and one reactive power meter or a multi-functional kilowatt-hour meter achieving the function of far infrared reading. SF6 gas is adopted for the main insulation, and the external insulation adopts high-strength porcelain insulator and silastic compound insulating bushing.

3. Working Conditions

Max. temperature	45℃
Min. temperature	-30℃ (special requirement: -40℃)
Altitude	≤1000m (special type can meet application requirements in the plateau))
Atmospheric conditions	No seriously corrosive gas, combustibles or explosives
Earthquake fortification intensity	Mercalli VIII
Wind velocity	≤35m/s
Installation site	Indoors or outdoors

4. Main Features
a. High measuring accuracy
b. Stable insulation performance
c. Strong dynamic and thermal stabilizing capabilities
d. Maintenance-free operation
e. Strong anti-tamper capability

5. Technical Parameters

Model	JLSQ-10W2	JLSQ-35W2
Max. voltage (kV)	12	40.5
Rated primary voltage of voltage transformer (kV)	10	35
Rated secondary voltage of voltage transformer (V)	100	100
Rated primary current of current transformer (A)	5, 10, 15, 20, 30, 40, 50, 75, 100, 150, 200, 300
Rated secondary current of current transformer (A)	5 or 1
Rated frequency (Hz)	50/60
Rated capacity of current transformer (VA)	10	30
Rated capacity of voltage transformer (VA)	10	30
Rated short-time thermal current (kA / s)	90 times the rated primary current
Rated dynamic current (kA)	225 times the rated primary current
Partial discharge at 1.2Um/√3 (pC)	<5
Accuracy class	0.1, 0.2, 0.2S
Rated insulation level (kV)	12, 42, 75	40.5, 95, 200
SF6 rated pressure（20℃）（MPa）	0.4
SF6 pressure at which gas supplement is needed (20℃) (MPa)	0.35
SF6 annual leakage rate (%)	≤0.5
SF6 water content (μL/L)	≤150
Product dimensions	See the picture below

Related Names
Outdoor Transformer | AC Transformer | Three Phase Transformer

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