Technical indicators
environment condition

Environmental temperature: -45~+65 ° C
Relative humidity: 40 ° C, 20-90%
Altitude:<2000m
Protection error
Voltage: ≤ 0.5%
Current: ≤ 1.0%
Temperature: ± 1 ° C
Time: ± 0.01s
measurement error
Voltage: ≤ 0.5% (within the rated voltage range of 80-120% of the power supply)
Current: ≤ 1% (within the range of 5-20% rated current) ≤ 0.5% (within the range of 20-120% rated current)
Power: ≤ 1%
Temperature: ± 1 ° C
Power supply conditions
Working voltage: Power supply rated voltage ± 20%
Power consumption:<0.5W (when cutting off the capacitor)
<5W (when putting capacitors into operation)
Reactive power control parameters
Reactive power control error: ≤ 75% of the minimum capacitor capacity
Reactive capacity: single unit ≤ 40kvar (three-phase)
≤ 20kvar (split phase)
Zero switching switch parameters
Zero switching offset:<2.5
Voltage withstand impulse: AC2500V (DC4000)

Product features

Modular structure: Intelligent capacitors are modular structures with small size, simple on-site wiring, and convenient maintenance. Only by increasing the number of modules can the expansion of the reactive power compensation system be achieved.
Zero crossing switching: The zero crossing switching function is achieved by the intelligent zero crossing switching relay of the core device, which realizes zero voltage switching and zero current switching, i.e. "zero crossing switching", reducing system power consumption. Therefore, during the capacitor switching process, there is no surge impact, no cutting overvoltage, and no arcing phenomenon.
Protection function: Intelligent capacitors have functions such as overvoltage, undervoltage, loss of voltage protection, short circuit protection, capacitor over temperature protection, etc., effectively ensuring the safety of capacitors and extending equipment life. The temperature protection inside low-voltage power capacitors is one of its important protections. Excessive working power supply voltage and environmental temperature can seriously affect the service life of low-voltage power capacitors. Setting temperature protection inside low-voltage power capacitors can exit operation when the internal temperature exceeds the limit, thereby extending the service life of low-voltage power capacitors.
Control technology: The switching criteria are power factor and reactive power. Reactive power flow prediction and delayed multi-point sampling technology are used. When the power factor is lower than the set value, the switching is controlled based on the grading difference of load reactive power deficiency to ensure that there is no oscillation in the switching. When overloaded, reactive power is fully compensated.
Intelligent network function: Using intelligent network technology, a 485 communication network is constructed, and multiple capacitors are used in parallel to automatically generate a network. The one with the smallest address code is the host, and the rest are slaves, forming a low-voltage reactive power automatic control system. Individual slave failures automatically exit without affecting other operations, while host failures automatically exit, generating a new host in the remaining slave machines to form a new system.
High quality power capacitors: The capacitor components in smart capacitors adopt a progressive thickening silver zinc coating process. The silver zinc coating has good conductivity and stability, and the thickness is proportional to the current density at that location. Therefore, the heat generated during operation is small and uniform, greatly improving the capacity stability of low-voltage power capacitors with minimal attenuation.
Hybrid compensation function: can achieve phase separation compensation. In situations where three-phase loads are unbalanced, a combination of three-phase and split phase methods can be used. According to the magnitude of reactive power deficiency in each phase, the three-phase can be switched separately to achieve reactive power optimization.
Filtering function: Effectively suppress high-order harmonic surges and form a low impedance path for high-order harmonics. It has an absorption and discharge effect on harmonics, can eliminate the impact of high-order harmonics on capacitors, reduce and suppress harmonic currents and flicker currents, protect circuits and capacitors from overload, prevent capacitor overheating, aging of insulation media, decreased self-healing performance, and reduced service life.
Easy installation and maintenance: The installation design of the anti harmonic intelligent capacitor is seat type, with a modular structure, flexible combination, and convenient expansion. It is easy to install and maintain in the low-voltage complete cabinet.
High quality dry series reactor: The dry series reactor of the product is small in size, light in weight, high-quality, low in temperature rise, low in power consumption, and has an extremely high heat resistance level, ensuring that the reactor can be safely noise free even at high temperatures.

Common models and sizes

Compensation method: conventional co compensation
Smart capacitor models: FSZNS/480-10-7, FSZNS/480-20-7, FSZNS/480-30-7, FSZNS/480-40-7, FSZNS/480-50-7, FZNS/525-10-14, FSZNS/525-20-14, FSZNS/525-30-14, FSZNS/525-40-14
External dimensions: 440 * 165 * 480
Installation size: 340 * 150
Compensation method: conventional sub compensation
Smart capacitor models: FSZNF/280-10-7, FZNF/280-20-7, FSZNF/280-30-7, FSZNF/300-10-14, FSZNF/300-10-14, FSZNF/300-10-14
External dimensions: 440 * 165 * 480
Installation size: 340 * 150