Intelligent DC Power Distribution Box

Catelogue: System Accessories

Hits:

--Compact structure, to save internal volume, standardized components,strong seriation and applicability characteristics
--Select PV-specific lightning protection devices to avoid damage caused by lightning strikes 
--Reasonable internal layout,intelligent design,easy maintenance, convenient for update 
--Reasonable internal copper busbar and wire layout design, safe and reliable performance.

Product Details :

Overview
For large PV grid-connected power generation system, in order to make the output of multiple combiner box switching in inverter conveniently, improve maintenance efficiency and reliability, generally need to added a DC lightning distribution cabinet between PV array combiner box and inverter. Our DC distribution cabinet series products are in order to meet the requirement to special design, can be matched with PV inverter and combiner box etc. to make up complete PV power generation system solutions. Use DC distribution cabinet, the user can according to the DC voltage range of inverter input, after make a certain quantity and same specification PV combiner box conflux again, through the lightning protection device and breaker then output, convenient to insert of backward stage inverter.

The intelligent distribution cabinet in PV power generation system is composed by the breaker, PV lightning protection module, monitoring PCBA motherboard , the current sensor etc., in addition，also have some other function devices can be optional like Blocking diode etc..

Product Feature

--According to input way number to unitize design, beautiful layout, easy maintenance,reasonable structure,perfect electrical scheme.
--Reasonable design of inlet and outlet,which are all arranged in cabinet front end, don’t need to remove the back door to install wiring,and effectively reduce the difficulty of on-site installation wiring.
--Compact structure, to save internal volume, standardized components,strong seriation and applicability characteristics and so on.
--Select PV DC circuit breaker, have high breaking capacity, good dynamic thermal stability etc. .
--Select PV-specific lightning protection devices to avoid damage caused by lightning strikes on power distribution cabinet components, and offer optional lightning failure monitoring function.
--Reasonable internal layout,intelligent design,easy maintenance, convenient for update and improvement later.
--Reasonable internal copper busbar and wire layout design, safe and reliable performance.
--Selection of materials such as conductor wire diameter, pressure and identification, indicator light etc. all comply with relevant standards Wire.
--Blocking diode is optional, and effectively prevent the loop countercurrent.
--Voltage and current monitoring, temperature detection and lightning failure monitoring, convenient to the background system management and operation , maintenance.
--The connections of similar components and accessories have generality interchangeability,reliable contact,convenient to insert and extract, the contact resistance, insertion and extraction force permissible current and lifespan of connectors, are all comply with current standards of the relevant national and industry.

Structure design

--Framework assembled from local welding of high quality cold rolled sheet, its rigidity and bearing capacity reached installation requirement of electrical components.
--The door of cabinet with width 600mm or 800mm uses entire structure, solving the protection problem of directly electric shock,and improving the whole appearance and strength,also convenient for batch standardization production.
--Cabinet door used galvanized rotary-type hinge and framework to be connected, convenient for installation and removal,the demolition side with rubber strip, when closing the door,the strip has certain compression stroke between door and cabinet, in case of front door directly impacts with cabinet,and improve the door protection level.
---The protection level of cabinet around , top surface and both ends have reached IP20.
--To strengthen ventilation and cooling,there are ventilation holes in the lower front and top of the cabinet, and configure the anti-anti-fan and cabinet cooling fan to make the cabinet come into being natural air ducts in the operation, with better heat dissipation performance.
--Steel mesh panels for all cooling holes sealed dust-proof nets, in order to ensure the protection level of the cabinet.
--The cabinet roof and floor can be dismantle if needed, easy assembly and adjustment of on-site cable.
--Cabinet top corners with rings, easy to hiking up and shipment.
--cabinet covering layer using polyester orange baking varnish spraying, Eliminate glare, and stong adhesion, installation parts in cabinet have be processed by galvanized passivation, improving the anti-function.
--Cabinet coating with special technology and process mode, has the stereoscopic perception in vision, and increasing the beauty of whole cabinet.
--Recommend color of cabinet: RAL7035, also can according user needs to offer other color.

Technical specification (the 500K with 8 strings intelligent
DC Distribution cabinet for example)

Mode specification	PL-D500K-8Z(D)
Max. Voltage	1000VDC
Rated current	Each 63A, 80A, 100A, 125A, 160A, 200A, 250A(optinal)
The number of input ways	≤10 ways
Monitoring numerical	Input each the branch current, bus volatge, temperature, lightning protection device
Communication	RS485 interface, standard MODBUS-RTU protocol
Anti-anti-function	Configuration modular anti diode (optional)
Cooling	Fans
Installation environment	Altitude of 3000m or less, humidity of 95% or less, non condensing
Protection level	IP20
Installation	Ground installation
Insulation	≥1000 Ω
Enclosure material	Cold rolled sheet/ clad aluminum zinc plate
Operating temperature	-25 ℃ ~ +55 ℃