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RCA20 阻容过电压吸收器 ୚ࡢ䚕ࣔࠩ
RCA20 Resistive capacitance overvoltage absorber AREVA ELECTRIC

产品的特点 /Product characteristics

RCA20 Resistor Capacitor Overvoltage Absorber is a high-tech product jointly developed and produced by our company and experts. It has
passed all type tests in the National High Voltage Electrical Apparatus Quality Supervision and Inspection Center and Xi'an High Voltage
Apparatus Research Institute. This product uses a dry high-voltage capacitor with self-healing function. This capacitor is a veritable "protective
capacitor", and its insulation level fully meets the requirements of GB311.1-1997 standard. The product can run for a long time at the upper
temperature limit and 1.15Un. It does not flashover and breakdown for 4 hours under 2Un. Safe operation under temporary overvoltage
(including power frequency voltage rise, resonant over voltage, single phase ground short circuit and intermittent arc ground over voltage).
The capacitor casing is made of DMC, and a high-quality, high-performance insulating material made of polypropylene metal film is used as
a solid medium, and a dry high-voltage container made of flame-retardant epoxy resin is used. The product's electrical performance is stable
and reliable, and it is equipped with a wire-wound non-inductive resistor with good heat dissipation performance, which greatly improves
the performance and reliability of the resistance-capacitance over-voltage absorber.
RCA20 RC overvoltage absorber, after repeated voltage absorption performance tests in the laboratory, shows that when the standard
lightning impulse voltage is applied, after the absorption by the RC absorber, the voltage drops very low, generally not exceeding the relative
2 times the voltage (peak). According to the data provided by the field test of "Vacuum Circuit Breaker Switching Shunt Reactor" in the
fourth phase of Guangdong Electric Power Co., Ltd. in August 2003, the overvoltage when the breaker is opened is connected to the zinc
oxide arrester. 3.48 times, and the maximum voltage is 1.87 times when accessing the RC overvoltage absorption. “The visible RC device
has a significant function of limiting overvoltage.” Therefore, the article finally suggests “in view of the overvoltage, it belongs to the
high frequency. Voltage, it is recommended to add a RC device. This device can reduce the overvoltage range and reduce the overvoltage
frequency." It can be seen that the RC overvoltage absorber protects various electrical equipment from operating overvoltage damage. The
most ideal and most effective device.

1min 工频耐受电压
额定电容 uF±10% kV 相间及对地
额定电压 kV Rated capacitance 额定电阻 Ω±10% 1min power frequency 1.1Un/ 3 时局放 Tanδ%
Rated voltage kV Rated resistance Ω ± 10% 1.1Un/ 3 time
uF±10% withstand voltage
kV phase to ground

7.2 0.10 100 30 ≤10pc ≤0.08

12 0.10 100 42 ≤10pc ≤0.08

40.5 0.05 100 95 ≤10pc ≤0.08

注：验收时的 1min 工频耐受电压为 75% 的出厂试验电压。
Note: The 1 min power frequency withstand voltage at the time of acceptance is 75% of the factory test voltage.

使用环境要求 /Environmental requirements

● 环境空气温度：-20℃ ~40℃
● 海拔高度：≤3000m
● 相对湿度：≤95%（20℃时）
● 安装场所的空气中不应含有化学腐蚀性气体和蒸汽，无导电性和爆炸性尘埃。
● 地震裂度不超过 8 度。
● 额定频率 5Hz 或 60Hz
● 如果使用系统的高次谐波超过 GB/T14549-93 规定时，应在订货时加以说明。
● Ambient air temperature: -20 ° C ~ 40 ° C
● Altitude: ≤3000m
● Relative humidity: ≤95% (at 20 ° C)
● The air in the installation site should not contain chemical corrosive gases and vapors, and no conductive or explosive dust.
● The earthquake crack does not exceed 8 degrees.
● Rated frequency 5Hz or 60Hz
● If the higher harmonics of the system are used in excess of the provisions of GB/T14549-93, should be stated when ordering.

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