Intelligent Safe Electrical System | Advanced Fire and Shock Protection

Feature

No injury: When the human body mistakenly touches a wire at the output end of the equipment with one hand, the current passing through the human body is lower than the specified safety current of 10mA (the factory equipment < 1mA, after connecting the line and load, this value changes with the line condition and different load characteristics), and the person can get rid of the power supply in time without causing casualties.

No fire: When the insulation of the power supply line and load equipment line controlled by the equipment is damaged, and the metal grounding short circuit of the line occurs, the arc spark can be effectively suppressed to avoid the occurrence of electrical fire accidents.

No leakage: the insulation of any phase line of the output line of the device is damaged, and there will be no leakage when the grounding short circuit is formed, and the power grid will not be blacked out, so as to ensure the continuous, safe and reliable power supply of the power grid.

Real-time monitoring: When the insulation of the output line or load of the device is damaged and the ground wire is short-circuited, the device can monitor the insulation resistance value in real time to ensure continuous power supply, and trigger the alarm prompt according to the set value.

Multiple protection: The equipment has the functions of overload, overvoltage, undervoltage, overheating, leakage and short circuit protection. When the measured value of the above parameters exceeds the set value, the device will prompt the corresponding alarm information and disconnect the output power supply to protect the safety of the line.

Parameter

Electrical parameters		Working environment
Product model	TDAQD	Temperature range	-20°C-60°C
Rated voltage	AC380V, frequency 50Hz~60Hz	relative humidity	<90RH%
Output voltage	AC380V士5%	Barometric pressure range	86KPa-106kPa
Other parameters	100KVA EXAMPLE

The current received by the human hand touching the contact with one hand: <1mA

Single phase wire metallic ground short-circuit current: <3mA

Note: Test environment with unconnected lines and loads.

The contact is subjected to current with one hand: <10mA.

Single phase metal ground short-circuit current: <30mA

Note: 500 meters line plus conventional load.

Functional parameters for security protection

4 dimensions of security protection

Overcurrent (overload) protection to capacity 120KVA example.

Current end			Current end
Current value	Power supply protection mode	Alarm mode	Temperature value	Power supply protection mode	Alarm mode
150A ≥ current	Normal operation	一	Temperature sensor open circuit 1.2	Normal operation	一
180A≥current>150A	Power off for 1 hour delay	Continuous alarm for 30S	Temperature sensor open circuit 1.23	Power off immediately	Continuous alarm for 30S
240A≥current>180A	Power off for 120S delay		150°C≥ temperature ≥ 90°C	Power supply normally, turn on the exhaust fan	一
current>240A	Power off for 5S delay		Temperature> 150°CC	Power supply normally, turn on the exhaust fan	Continuous alarm for 30S

Current end			Resistor end
Voltage value	Power supply protection mode	Alarm mode	Insulation resistance value	Power supply protection mode	Alarm mode
Phase voltage> 259V	Power off immediately	Continuous alarm for 30S	Phase AB phase C phase N zero	Normal operation (under the safe electric power supply mode)	The fault light is on, and there is no alarm
Phase voltage< 190V	Power off immediately	Continuous alarm for 30S	The value of the arbitrary insulation resistance to ground ≤20kΩ	Immediate power off (under mains power supply)	Continuous alarm for 30S

Working principle: Through a special exchange device, the system output line and the mains line are electrically damped, and the insulation monitoring circuit, electrical monitoring circuit, etc. are added, combined with the IT power distribution mode, when the line is short-circuited with the ground or people touch the line, no electrical circuit is formed to avoid arc sparks. At the same time, it is controlled within the safe current through the human body to the ground terminal current to avoid causing harm to people.

System composition: the use of advanced microelectronics technology, power electronics technology, measurement and control technology, signal processing technology, Internet of things information technology, cloud computing technology and other combination of safe power product solutions.

Executive standard: high-standard design concept, using the "double national standard" design standard, improve the performance of the product, to ensure the stability of the product operation. GB/T 7251.12-2013 Low-voltage switchgear and control equipment – Part 2: Complete sets of power switchgear and control equipment, GB/T 7251.8-2020 Low-voltage switchgear and control equipment -- General technical requirements for intelligent switchgear.

System function: stability: harmonic control, stable voltage output, protection of application equipment; monitoring: online insulation resistance, voltage, current, temperature and other working status; alarm: alarm under protection function and abnormal operation (no tripping);query: historical power consumption curve work record (operation record, fault record);communication: can realize remote monitoring and control of mobile phone PC side.