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126kV Intelligent Combination Electrical Appliance

YHV photovoltaic combiner box

Overview

? A combiner box refers to a user who can connect a certain number of photovoltaic cells with the same specifications in series to form a series of photovoltaic cells. Then, several photovoltaic series are connected in parallel to the photovoltaic combiner box. After converging in the photovoltaic combiner box, the controller, DC distribution cabinet, photovoltaic inverter, and AC distribution cabinet are used together to form a complete photovoltaic power generation system, achieving grid connection with the city power supply.

Performance Characteristics

Forming a series of photovoltaic arrays

Parallel connection to photovoltaic combiner box

Used together to form a complete photovoltaic power generation system

Realizing grid connection with mains power

Technical parameters of detection unit

 

Input

PV battery string input

≤ 16 channels, 0-20 Adc, accuracy 0.5%

Analog input

3-way, 4-20mA/0-5V, accuracy 0.5%

State input

2-way DI quantity, passive, 2500V photoelectric isolation

Interface

Communication interface

1 * RS4852500V photoelectric isolation

Optional

Communication port lightning protection

4KV (10/700us) (GB9043-1999), lightning protection

Digital tube display

Accurate to 0.01, error ≤ 5 ‰

Work environment

 

Working power supply

85 ～ 264Vac

18 ～ 36Vdc

Power dissipation

≤ 8W

Working temperature

-35° C ～ +75° C (-31° F ～ +158° F)

Storage temperature

-40° C ～ +85° C (-40° F ～ +185° F)

Relative humidity

5-95% non condensing

Electromagnetic compatibility (EMC)

Electrostatic discharge

GB/T 17626-4-2 Level 3

Fast transient

GB/T 17626-4-4 Level 3 (requires communication port lightning arrester)

Impulse current

GB/T 17626-4-5 Level 3 (requires communication port lightning arrester)

Power frequency magnetic field

GB/T 17626-4-8 Grade 4


Equipment technical parameters

 

Product model

YHV-CD16

Maximum number of access paths

16 routes

Ambient temperature

-25~+40℃

Environmental humidity

0~90%

Working altitude

3000 meter level

Maximum input current per circuit

DC15A

Maximum open circuit voltage per circuit

DC1000V

Fuses

Each positive and negative pole is connected to a DC1000V photovoltaic dedicated fuse

Lightning arrester

The positive and negative poles of the busbar are respectively connected to photovoltaic special lightning arresters

Circuit breaker

The positive and negative poles of the busbar are respectively connected to photovoltaic dedicated circuit breakers, with a rated current of 160A and a voltage of DC1000V

Design of combiner box

Enclosed design of the box, anti-static, shockproof, dustproof, rust proof, rain proof, flame retardant

Heat dissipation of combiner box

Natural heat dissipation of the box

Lightning protection of combiner box

Grounding and lightning protection of busbar box

Insulation

Input to ground, output to ground, and input to output insulation resistance ≥ 20M Ω

System response time

1 second

Working power supply

Using an internal combiner DC power supply

Testing accuracy

Photovoltaic cell measurement accuracy level 0.5, external analog quantity level 0.2

RS485 communication

RS485+magnetic isolation/Modbus RTU protocol, 4800/9600/19200/38400bps

Shell waterproof grade

IP65, for indoor and outdoor installation and use