Overview:
The outdoor integrated power distribution cabinet series is suitable for power transmission and distribution systems with AC 50Hz and rated voltage below 0.4kV. This series of products integrates automatic compensation and power distribution into a new type of indoor and outdoor low-voltage distribution cabinets that integrate leakage protection, energy metering, overcurrent, overvoltage and phase loss protection and other functions. It is small in size, easy to install, and low-cost. It has the advantages of low cost, anti-electricity theft, strong adaptability, aging resistance, accurate operation, and no compensation misunderstandings. It is an ideal product for power grid transformation.
1. Purpose
JP cabinet low-voltage comprehensive compensation distribution cabinet is mainly used for leakage, overload protection, lightning protection and reactive power compensation of low-voltage power grids to improve safe power consumption and power factor of the power grid, reduce line losses and improve power quality. This series of low-voltage comprehensive compensation distribution cabinets takes an intelligent reactive power controller as the core, uses non-contact capacitive switches or capacitive contactors as switching devices of the capacitor bank, and automatically switches capacitors according to the power factor of the power grid to ensure The power grid always has a high power factor. The compensation components of the JP type low-voltage comprehensive compensation distribution cabinet are capacitors, which can be used in situations where harmonics are not high; the compensation components of the JPS 31 type low-voltage comprehensive compensation distribution cabinet are also capacitors, but they can be divided according to the load status of each phase. Phase-to-phase, JP type low-voltage comprehensive compensation distribution cabinet’s compensation components are composed of capacitors and reactors connected in series. It has harmonic suppression function and can be used in situations with high harmonics.
2. Conditions of use
1. Ambient temperature: -30℃～52℃.
2. Relative humidity: no more than 90%.
3. There is no corrosive gas, no conductive dust, and no flammable or explosive media in the surrounding environment.
4．Altitude: no more than 2500m.
5. There should be no severe vibration or bumps at the installation site, and the installation inclination should not be greater than 5 degrees.
Note: If there are special environmental usage conditions, please consult with our company when ordering.
3. Implementation standards
ICE439 "Low-voltage complete switchgear and control equipment"
GB7251 "Low-voltage complete switchgear"
GB3983.1-89 "Low-voltage parallel capacitor"
GB12747-91 "Self-healing low-voltage shunt capacitor"
DL/T597-1996 Technical conditions for ordering low-voltage reactive power compensator
GB/T15576-1995 General technical conditions for low-voltage reactive power static compensation device
DL500-92 Technical conditions for ordering voltage monitor
GB9466 -88 Basic test method for low-voltage complete switchgear
GB1497-85 Basic standard for low-voltage electrical appliances
GB1208-1997 Current transformer
GB4942.2-85 Protection level of low-voltage electrical appliance shell
IV. Structural features
1. The main components inside the comprehensive compensation distribution cabinet include leakage protectors, capacitors, reactors (JPS H type), knife fuse switches (or knife switches, choose one), fuses (or small circuit breakers), contactors (or It is composed of silicon controlled thyristor (composite switch), controller, etc.; JPS H-type reactive power compensation cabinet can be modularized according to user requirements. The module integrates capacitors, reactors, fuses and contactors, with compact structure and novel layout. .
2. There are power factor meters, ammeters, voltmeters (or power indicator lights, choose one of the two) on the panel of the cabinet to facilitate real-time observation; there is a fan (optional) for heat dissipation on the top of the cabinet, which is controlled by a temperature control switch , there is a manual/automatic switch for controlling the fan on the panel.
3. The cabinet is made of high-quality cold-rolled steel plate or stainless steel plate, which has good flatness. The outer surface is spray-painted (stainless steel plate is optional) and has strong anti-corrosion ability; the internal frame is made of galvanized steel plate, aluminum-zinc-coated steel plate or stainless steel plate (optional). selection) to ensure better conductivity and corrosion resistance.
4. Complete protection functions: short circuit, overload, overvoltage, undervoltage, phase loss, residual current (leakage), neutral line broken on the power supply side, etc.; each parameter is easy to set; it automatically exits when an external related fault occurs operation, and automatically resumes operation after power is supplied (the main switch has an automatic reclosing function).
5. Technical parameters
1. Rated voltage: 220V, 380V (400V), 660V
2. Rated frequency: 50Hz
3. Rated compensation capacity: 4～600kvar
4. Operating voltage range: 0.8～1.1Un
5. Capacitor wiring mode: "△" or "Y".
6. Measurement error: Voltage: 0.5% Current: 1.0% Reactive power: 1.0%.
7. Switching mode: three-phase automatic switching (JPS 3 type), split-phase switching (JPS 1 type), three-phase single-phase automatic switching (JPS 31 type).
8. Switching delay: adjustable from 1 to 999 seconds.
Dimensional drawing
