SNX anti harmonic intelligent capacitor

1、 Product model

1. The product model of the anti harmonic low-voltage intelligent power capacitor is shown in Figure 6, indicating the type of product.

Example 1: SNXS-40/480-7, represents a three-phase common compensation anti harmonic intelligent power capacitor with a capacity of 40kvar, a rated voltage of 480V, and an internal series of 7% reactors.

Example 2: SNXF-20/280-7, represents a phase compensated anti harmonic intelligent power capacitor with a capacity of 20kva, a rated voltage of 280V, and an internal series of 7% reactors.

The rated voltage is generally taken as 480V or 525V for three-phase compensation, and 280V or 300V for phase separation compensation, with high reliability.

The main capacitor needs to be designed as a dry-type capacitor, and G should be added at the classification of model requirements, such as SNXSG-40/480-7.

Dry type capacitors do not inject flammable liquid oil or wax fillers, and have the following characteristics:

The attenuation of capacity usage is small;

Overall flame retardant, no fire alarm will occur;

There is no leakage, no pollution to the environment, and no environmental issues.

2. Product Model Table

Common model table (three-phase 480V or 525V; phase separated 280V or 300V; series 7% or 14% reactors)

2、 Technical specifications of the product

2.1 Environmental conditions

Environmental temperature: -40~40 ℃

Relative humidity: 40 ℃, 20-90%

Altitude: ≤ 2000m

2.2 Power Supply Conditions

Rated voltage:~220V/380V

Voltage deviation: ± 20%

Power frequency: 48.5-51.5Hz

Power consumption:<>

2.3 Electrical Safety

The electrical clearance and creepage distance, insulation strength, safety protection, short-circuit strength, and the use and control circuit protection all comply with the corresponding provisions of the power industry standard DL/T842-2003 "Conditions for Use of Low Voltage Parallel Capacitor Devices" of the People's Republic of China.

2.4 Measurement Error

Voltage: ≤ 0.5% (within the range of 80-120% rated voltage)

Current: ≤ 1%

Temperature: ± 1 ℃

2.5 Protection Error

Voltage: ≤ 0.5% (within the range of 80-120% rated voltage)

Current: ≤ 1%

Temperature: ± 1 ℃

2.6 Reactive power compensation parameters

Capacitor switching interval:>10S

Reactive power capacity: Single unit ≤ 40Kvar (three-phase)

≤20Kvar(Phase separation);

Online: ≤ 24 units

2.7 Reliability Parameters

Control accuracy: 100%

Control capacity count: 1 million times

Capacity decay rate of capacitors during operation: ≤ 1%/year

Capacity switching attenuation rate of capacitors: ≤ 1000 times

Annual failure rate: ≤ 0.1%

2.8 Mechanical Parameters and Installation

Weight: 35kg (40Kvar)

The fixed installation dimensions are shown in the figure

Note: The quality of products varies with different specifications, but the external dimensions, spacing between fixing holes, and size of fixing holes are the same.