String power supply

Model：FT-150050

Brand：fengtu

The series power supply is easy to operate, easy to carry, and can complete the synchronous power-on of the whole series, and the detection is faster....

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1.Introduction to string power supply products

The string power supply is also called the string EL test power supply. The string power supply is easy to operate and portable. It can complete the synchronous power-on of the entire string and the detection is faster. It is suitable for photovoltaic power station full inspection projects and water surfaces, roofs, and factory buildings. , mountainous and other photovoltaic power station testing. The string power supply is developed by our company based on the reverse power-up characteristics of photovoltaic power station strings. It converts alternating current into direct current and inputs it into the panel to stimulate electroluminescence, thereby testing the internal defects of EL.

FT-150050 is a research and development program-controlled power supply that controls the electrical performance and safeguard measures of the string power supply through the program software system. Its pro version is configured with high-quality software, using higher-quality imported electronic components and an open programming host to better ensure the stability and safety of string detection.

2. Technical parameters of string power supply

1. EL string power supply for photovoltaic use

Specification	FT-150030	FT-150050	FT-150010
Electric energy parameters	0～1500V; 0～3A	0～1500V; 0～5A	0～1500V; 0～10A
quality	Programmable linear domestic	Program-controlled custom import	Program-controlled custom import
Scenes	EL detector single block/string test	EL detector single block/string test	EL detector + drone EL test
Voltage output	0～1500V	0～1500V	0～1500V
Voltage accuracy	1V	0.001V	0.001V
Compensation voltage	12V	96V	96V
Current output	0～3A	0~5A	0～10A
Current accuracy	0.1A	0.001A	0.001A
Power accuracy	±0.1A;±1V	±0.001A; ±0.001V	±0.001A; ±0.001V
Power output	0～4.5KW	0～8KW	0～16KW
Power stability	±0.1%	±0.002%	±0.002%
Output accuracy	±0.1%	±0.001%	±0.001%
Output efficiency	＞80%	＞95%	＞95%
Output linear regulation rate	±0.5%	±0.005%	±0.005%
Output load regulation	±0.5%	±0.005%	±0.005%
Input voltage	220VAC	380VAC	380VAC
input frequency	50/60Hz	50/80Hz	50/100Hz
Input power factor	>0.75	>0.5	>0.5
Power on time	Manual control	Program-controlled scheduled automatic power-on and automatic power-off
Insulation withstand voltage input to output	2500VDC
Insulation withstand voltage output to shell	500VDC
OVP adjustment range	0-100% front panel adjustment (or digital interface)
OVP adjustment accuracy	±1% of nominal value

2. EL string power supply/programmable control system

Specification	FT-150030	FT-150050	FT-150010
Programmable control system	Control current and voltage output and monitor power supply working status	The program control panel can directly set various program control indicators of the power supply.
Programmable remote interface	RS-485C, analog interface (0-10V)
Program control panel	-	The power panel can be programmed to control power on and off times, scheduled power on, protection thresholds, etc.
Reverse current protection	-	The reverse current impedance threshold can be set to prevent string current backflow.
Short circuit protection	Photovoltaic string reverse connection short circuit protection to prevent photovoltaic modules from diode breakdown
Programmable buffer protection	-	Cache-type photovoltaic groups are connected and powered off in series to prevent large currents from penetrating the photovoltaic panels.
Programmable steady-state output	-	Adaptively matches current and voltage according to different power components in the string (to avoid breakdown of component diodes)
Digital voltage programming accuracy	-	±0.001%	±0.001%
Digital current programming accuracy	-	±0.001%	±0.001%
Programmable rise time	-	0~10s can be set
Programmable fall time	-	60ms (no load); 250ms (10% load); 2.5s (full load)
Voltage fluctuation control	0.1V/ms～10V/ms	0.001V/ms～0.002V/ms
Current fluctuation control	0.1A～0.2A	0.001A～0.01A, or 1NF
Fluctuation control minimum time	5ms	0.1ms
Panel display	Digital display insulated control panel	Host program control panel
Panel control	-	The power supply current and voltage protection limit value OVP can be set
Photovoltaic EL power-on characteristics	High and low current switching test (manual switching)	High and low current switching test (automatic switching by program)
Number of components powered on simultaneously	Can simultaneously complete the detection of power supply access for 1 to 32 photovoltaic panels (within 1500V)
Photovoltaic power access port	Combiner box/inverter/string port/module port
Steady state output module	-	Stable power supply ensures uniform electrical energy parameters of each component in the string (to prevent photovoltaic panel breakdown)
Thermostatic control module	Air cooling continuous heat dissipation and temperature control	Programmable electronic temperature control of 45°C ensures 24-hour uninterrupted work
Overload protection	-	The overload threshold can be set, and the output will automatically stop when overloaded to prevent the power supply circuit breaker transformer from being burned.
Output short circuit automatic protection	Protects power failure and personal danger caused by power station line or component string breakage, and the power supply automatically cuts off the power
Input voltage automatic protection	-	Protects power components from burning due to excessive input voltage fluctuations
Phase loss protection	Can protect power supply damage and accidents caused by three-phase open circuit
Internal overheating protection	Dynamic heat dissipation according to the internal temperature ensures that the power supply will not be burned due to excessive temperature.
High voltage isolation protection	Ensure the safety of operators working with high-voltage electricity on the shell and panel of the machine
input line	2 meters (6 square meters)
Wiring	AC220	Three-phase three-wire + ground wire
volume and weight	430x88x450mm; 13kg	17kg	26kg

Note: The string power supply is a high-power DC output power supply, which is high-voltage equipment. The program control system is customized for photovoltaic power station scenarios, which can better ensure the safety of manual construction on site. However, high-voltage equipment is still high-risk and high-risk equipment. Please strictly follow the operating instructions and standardize wiring and operation. If the power supply is protected, contact the manufacturer as soon as possible to solve the problem. Do not perform wiring operations without authorization to prevent danger! ! !

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