Product overview

JP type low-voltage distribution reactive power compensation integrated cabinet is a new type of outdoor distribution reactive power compensation integrated cabinet designed in the principle of safety, economy, rationality and reliability. It is suitable for power distribution systems with AC 50Hz and Yan fixed voltage 380V in urban power network, rural power network transformation, industrial and mining enterprises, street lamp lighting, residential quarters, etc. It is a new outdoor comprehensive distribution box with multi-functions such as power distribution, control, protection, reactive power compensation, power metering, etc. At the same time, leakage protection function can be added according to user requirements. The product has the advantages of novel structure, reasonable, high protection level, convenient installation, debugging, maintenance and repair. Products in line with GB7251.12-2013, GB/T15576-2008, and passed the 3C certification, is the current power grid transformation of the ideal low-voltage complete sets of equipment. JP series outdoor distribution reactive power compensation integrated cabinet is suitable for electric energy distribution, measurement, protection and reactive power automatic compensation of 0.4kV voltage level.

Model and meaning

Product Features

JP series outdoor integrated distribution box, can have power distribution, compensation, metering three basic functions. Users can choose different schemes according to their needs. The specific scheme numbers are as follows:

01 -- distribution compensation metering 02 -- distribution compensation 03 -- distribution metering 04 -- compensation metering 05 -- distribution 06 -- metering 07 -- compensation

Main performance

◆ 1, timely and rapid response, good compensation effect, reliable work, according to user needs to join the leakage protector.

◆ 2. Protection function: overvoltage, overload, undervoltage, undercurrent, short circuit, phase loss, zero sequence overrun and other functions

◆ 3. Automatic operation function: automatic recovery after power failure and 10s delay after power transmission

◆ 4, can improve the power factor of the grid to reach more than 0.95

Operating conditions

◆ Ambient temperature:-40 ℃ ~ 55 ℃

◆ Relative humidity of air: ≤ 90% (relative ambient temperature is 20 ℃ ~ 25 ℃)

◆ Altitude: not more than 3000m

◆ Environmental conditions: suitable for installation in the box, not suitable for fire, explosion hazard, serious pollution, chemical corrosion and severe vibration.

◆ Installation position: the inclination vertical to the ground is not more than 5 °

Technical parameters

◆ 1. Rated voltage: 400V

◆ 2. Rated insulation voltage: 660V

◆ 3. Rated frequency: 50Hz

◆ 4. The capacity of the transformer is 10, 20, 30, 50, 63, 80, 100, 125, 160, 200, 250, 315, 400, 500 and 630 (KVA) respectively. The specific specifications are subject to the order contract.

◆ 5. Insulation resistance:>4MQ

◆ 6. Dielectric strength: the main circuit is relatively 2.5kV for 1 minute. Auxiliary loop to ground 2.5kV,1 min. Protection class: IP33

◆ 7. System grounding mode: neutral point is directly grounded (T system)

◆ 8. Compensation mode: cyclic switching, coded switching, fuzzy control automatic switching.

◆ 9. Control physical quantity: reactive power or reactive current

◆ 10, the fastest response time:<20ms

◆ 11. Main components: the main components refer to comprehensive protector, surge protector, composite switch, reactive power compensation controller, capacitor, master incoming line knife switch, molded case circuit breaker, micro-break switch, etc. (See Appendix A for the selection of JP cabinets for rural and urban networks)

Installation and commissioning

◆ Inspection before installation

◆ Check whether the equipment is in good condition and whether the random data and accessories are complete. If any problem is found, contact the manufacturer in time.

◆ Installation wiring

1. The product is installed under the transformer bench (see Figure 1 below) or on the side (see Figure 2 below), and the fixed parts of the distribution box are provided by the user.

2. Refer to the installation diagram for the installation of the product. The incoming and outgoing lines are connected with the transformer or low-voltage feed overhead line by cables or through-pipe insulated wires.