Lifasa’s cos ϕ correction power capacitors and harmonic filtering for AT are manufactured under the stainless steel container/box base and porcelain terminals. There are two types, depending on the connection mode we are going to use:
Lifasa公司的功率因素校正电力电容器和高压谐波滤波是在不锈钢容器/盒底座和瓷器端子下制造的。有两种类型，取决于我们将要使用的连接模式：
- Single-phase (1 or 2 terminals) with internal fuses for connection to the mains via a double star. Recommended for voltage networks above 11 kV or need of high power equipment.
单相（1或2个接线端子），内部熔断器通过双星连接到电源。推荐用于11千伏以上电压网络或需要高功率设备。 - Three-phase (3 terminals) with internal fuses for direct connection to three-phase mains. Recommended for voltage networks below 11 kV.
三相（3个端子），内部熔断器用于直接连接三相电源。推荐用于低于11千伏的电压网络。
The internal composition is a group of elements with single-phase capacities in greater or lesser numbers depending on the desired power/capacity and the future working voltage of the capacitor. These groups are associated in parallel series, thus the final capacitor is obtained with a certain power and operation for high three-phase mains voltages.
内部组成是一组元件，其单相电容的多少取决于要求的功率/电容和电容器将来的工作电压。这些组以并联串联方式关联，最终电容器组成一定功率，并且以较高的三相电源电压进行操作。
The rated voltage of the capacitor determines the number of elements in series and the rated power of the capacitor influences the number of elements in parallel.
电容器的额定电压决定串联元件的数量，电容器的额定功率影响并联元件的数量。
The above-mentioned capacitive elements are manufactured using “All-film” technology, with a low-loss roughened polypropylene film and extended aluminium film. With this technology, which replaces the previous “paper-film” technology, losses inside the condenser are considerably reduced, being at values of 0.15 W/Kvar and, in addition, in the event of an internal short circuit, the risk of explosion of the container is eliminated, since the paper produced more gases and a greater increase in internal pressure.
上述电容元件采用全膜技术制造，具有低损耗的粗糙聚丙烯膜和延伸铝膜。用这种技术代替以前的“纸膜”技术，冷凝器内部的损耗显著降低，只有0.15W/Kvar。此外，如果内部短路，容器爆炸的风险被消除，因为纸膜会产生更多的气体和导致内部压力的大大增加。
Being a rough polypropylene film, the impregnation of the capacitors is faster, since the liquid penetration between the polypropylene layers, between it and the aluminium electrodes, is improved.
作为粗糙的聚丙烯膜，电容器的浸渍更快，因为聚丙烯层之间、聚丙烯层与铝电极之间的液体渗透得到改善
The aluminium foil is laser-cut to smooth the edges and reduce the electric field in these areas. By eliminating the microscopic tips existing on the edge of the aluminium cut with traditional techniques, it is possible to increase the threshold voltage of the corona effect, responsible for anomalies in the capacitors, and gives the product a better tolerance to overvoltages.
铝箔是激光切割，以在这些领域边缘平滑和减少电场。通过采用传统技术消除铝切割边缘存在的微观尖端，可以提高电晕效应的阈值电压，对电容器中的异常现象负责，并且使产品具有更好的过电压容限。
According to the recommendations of the IEC 60871-1 standard of 1997, Lifasa’s AT capacitors are able to withstand:
根据IEC 6081-1 1997标准的建议，LIFASA的高压电容器能够承受：
10% overvoltage (1.10 x Un) over the rated voltage 12 hours of every 24 hours.
10%过电压（1.10×UN）超过额定电压12小时每24小时。
30% current overload (1.3 x In) over the rated current in continuous operation.
连续运行 30%电流过载（1.3×IN）超过额定电流。
The impregnating liquid used is SAS-40E / M/DBT (JARYLEC C101), a non-chlorinated biodegradable oil (without PCB’s), which has a high resistance to partial discharges and excellent working conditions as a dielectric, in addition to not presenting any type of risk to the environment in the event of failure.
所用的浸渍液是SAS-40E/M/DBT(JARYLEC C101)，一种非氯化的生物可降解油(不含PCB)，它具有高耐局部放电性能和作为电介质的良好工作条件，此外，在发生故障时不向环境呈现任何类型的风险。
The capacitors are equipped with internal discharge resistors in order to reduce the voltage, after being put out of service, from an initial peak voltage of 1,414 times the nominal voltage to a residual voltage of 75 V 10 minutes according to IEC 60871, or 50 V in 5 minutes according to RAT.
根据IEC 60871，电容器装有内部放电电阻器，以便在停用后将电压从标称电压的1414倍的初始峰值电压降低到75V 10分钟，或者根据RAT，在5分钟内将电压降低到50V。
They have an internal protection fuse for each single-phase element, the purpose of which is to prevent the complete disconnection of the capacitor assembly when there is an internal fault due to short circuit or overload, thus isolating the fault and allowing the continuity of service in the rest of the elements.
它们每个单相元件都具有内部保护熔断器，其目的在于当由于短路或过载而出现内部故障时，防止电容器组件完全断开，从而隔离故障并允许其余元件部分继续工作。
All this has been the result of the use of the most advanced technologies in this field as well as the most rigorous laboratory and R&D tests.
所有这些都是这个领域使用先进的技术以及严格的实验室和研发试验的结果。
The wide range of power available to us, in addition to the equipment that can be manufactured according to the customer’s needs, ranges from 25 kvar to 600 kvar per unit per capacitor, all of them with internal fuses and for a wide range of rated voltages.
除了可根据客户需要制造的设备外，我们还可以提供各种各样功率的设备，每台电容器每单元25kvar至600kvar，它们都具有内部保险丝和广泛的额定电压。
The tolerance will always be between -5%/+10% according to IEC 60871-1.
根据IEC 6081-1，公差通常是在-5%／+10%之间。
General parameters 一般参数
| Three Phase 三相 | Single Phase 单相 | |
|---|---|---|
| Type 类型 | AT… | AM… / AS… |
| Power output 输出功率 | 25 – 500 kvar | 25 – 600 kvar |
| Voltage rating 电压范围 | 1,0 – 11,0 kV | 1,0 – 24,0 kV |
| High system Voltage 高系统电压 | 7,2 – 12 kV | 7,2 – 12 – 17,5 – 24 – 36 kV |
| Residual voltage and time 残压和时间 | 75V / 10 minutes (IEC 871) | 75V / 10 minutes (IEC 871) |
| Impregnant 溶剂 | SAS-40E / M/DBT (JARYLEC C101) | SAS-40E / M/DBT (JARYLEC C101) |
| Internal connection 内部连接 | Star | Single Phase |
Basic Isulation Level (BIL) Table 基本模拟水平（BIL）表
| Maximum system voltage for capacitors conforming to the specification 符合规格的电容器的最大系统电压 | |||||
|---|---|---|---|---|---|
| Tests 测试电压 | 7,2 | 12 | 17,5 | 24 | 36 |
| Power frequency, test voltage kV. 50 Hz 1 min. 电源频率，测试电压 | 20 | 28 | 38 | 50 | 70 |
| Impulse Level, 1,2kV / 50 μs 脉冲水平 | 60 | 75 | 95 | 125 | 170 |
| Creepage distance (mm) 爬电距离 | 140 | 190 | 300 | 435 | 600 |
| Type of Capacitor 电容器类型 | |||||
| Single Phase 单相 | |||||
| Three Phase 三相 | |||||
Ambient air condiction por operation according to IEC: 60871
根据IEC：60871环境空气调节部分操作
| AMBIENT AIR TEMPERATURE (Cº) 环境空气温度（Cº） | |||
|---|---|---|---|
| Symbol 符号 | Temperature maximum 最大温度 | Highest mean over any period of 24 hours 24小时内最高平均值 | Highest mean over any period of 1 year 一年内最高平均值 |
| A | 40 | 30 | 20 |
| B | 45 | 35 | 25 |
| C | 50 | 40 | 30 |
| D | 55 | 45 | 35 |
Internal fuses 内部保险丝
As we have discussed earlier, internal fuse provides protection against total failure of capacito unit, case rupture and explosion. Therefore it is advisable to select capacitor units having internal fuse protection. Table below indicates the rating of capacitor units which are normally having internal fuses:
正如我们前面所讨论的，内部保险丝提供保护，防止电容器组完全失效、外壳破裂和爆炸。因此，建议选择具有内部熔丝保护的电容器单元。下表表示通常具有内部熔断器的电容器单元的额定值：
| Rated Voltage [kV] | Single Phase Capacitor Power units with internal Fuse 具有内部保险丝的单相电容器功率单元 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 kvar | 75 kvar | 100 kvar | 150 kvar | 200 kvar | 250 kvar | 300 kvar | 350 kvar | 400 kvar | 450 kvar | 500 kvar | 550 kvar | 600 kvar | |
| 2,4 | |||||||||||||
| 3,3 | – | ||||||||||||
| 4,2 | – | – | |||||||||||
| 5,2 | – | – | |||||||||||
| 6,3 | – | – | |||||||||||
| 6,6 | – | – | |||||||||||
| 7,35 | – | – | – | ||||||||||
| 8,9 | – | – | – | ||||||||||
| 10,3 | – | – | – | – | |||||||||
| 11 | – | – | – | – | |||||||||
| 12,5 | – | – | – | – | |||||||||
| 15,1 | – | – | – | – | – | ||||||||
Standards 标准
Lifasa Capacitors conforms to: LIFASA电容器符合：
- IEC 60871-1 & 2
- IEC 593
Routine tests 常规试验
Routine or individual tests 常规或者单独试验
The individual tests on the capacitors in our facilities in accordance with the strict recommendations of the IEC 60871 standard are as follows:
按照IEC 60871标准的严格建议，对我们设施中的电容器进行如下单独测试：
Capacitor: 电容器：
- Tightness test. 密封性试验。
- Average capacity. 平均容量。
- Average capacitor losses. 平均电容损耗。
- High Voltage Test between terminals.接线端子间高压试验。
- Discharge resistance (Capacitor discharge test). 放电电阻（电容放电试验）。
- High voltage test at industrial frequency to check the dielectric insulation (between short circuit terminals and tank).
在工业频率下进行高压试验，检查介质绝缘（在短路端子和油箱之间）。