NDW300 Series protection device

Technical parameters

2.1 Rated data

Alternating current
5A、1A 
Ac voltage
100V 
Ac frequency
50 HZ 
Dc voltage
220V , 110V 

2.2 Power consumption

Ac current loop
IN = 5A
No more than 0.5VA per phase
Ac voltage loop
U = UN
No more than 0.2VA per phase
Dc power circuit
The normal work
No more than 8W
protections
Not more than 10W

2.3 Overload capacity

Ac current loop: 2 times rated current
Continuous work
10 times the rated current
Allowed to work for 10 seconds
40 times the rated current
Allowed to work for 1S
Ac voltage loop: 1.2 times rated voltage
Continuous work
Dc power supply circuit: 80% ~ 110% rated voltage continuous operation

2.4 Measurement Error

current
No more than plus or minus 0.5%
voltage
No more than plus or minus 0.3%
power
Not greater than ±1.0 %

2.5 Temperature influence

The variation of operating value caused by temperature change in the normal operating temperature range from -10℃ to 55℃ is no more than ± 1%

2.6 Permitted environmental conditions

Normal operating temperature
-10℃~55℃
Relative humidity
45%~90%
The atmospheric pressure
From 80 to 110 kpa

2.7 Anti-interference performance

⑴ pulse interference test
It can withstand the attenuation shock wave pulse interference test with the voltage amplitude of 1MHZ and 100KHZ at a common mode of 2500V and differential mode of 1000V. 

⑵ The electrostatic discharge reactance test
Can withstand the Ⅳ IEC61000-4-2 standard, test voltage 8 kv static contact discharge test. 

⑶ Radiofrequency electromagnetic field radiation immunity test
Can withstand the IEC61000-4-3 standard Ⅲ, interference field strength 10 v/M of radiation electromagnetic field interference test. 

⑷ Electrical fast transient pulse group immunity test

⑸ Surge (impact) disturbance resistance test
Can withstand the IEC61000-4-5 standard Ⅳ, open circuit test voltage level 4 kv surge interference test 

⑹ power supply system and connected equipment harmonic, harmonic wave interference test
Can meet the IEC61000-4-7 standard B class, current and voltage of the maximum allowable error not more than 5% of the measured value.

⑺ For power voltage sag, short - term interruption and voltage variation
Can withstand iEC61000-4-11 standard 70% UT class voltage sag, short - time interrupt interference test. 

⑻ Therefore, oscillation wave immunity test
Can withstand the IEC61000-4-12 standard Ⅳ level damped oscillation wave interference test, as well as the common mode voltage amplitude 4 kv, differential mode 2 kv Ⅳ ringing wave interference test.

⑼ Interference resistance of power frequency magnetic field
Can withstand the IEC61000-4-8 standard Ⅳ continuous power frequency magnetic field interference test. 

⑽ We will damp the interference resistance of oscillating magnetic field
Can withstand the IEC61000-4-10 standard Ⅳ level damped oscillation magnetic field interference test.

2.8 Insulation resistance performance

Ac input to ground: greater than 100 megohm
Dc input to ground: greater than 100 megohm
Signal and output contact to ground: greater than 100 megohm
Open entry circuit to ground: greater than 100 megohm
It can withstand 2KV/1min power frequency withstand voltage, 5KV impulse voltage

2.9 Mechanical properties

⑴ vibration
To withstand vibration endurance tests of class I, as specified in 16.3 of GB/T 7261 

⑵ the impact 
To withstand impact endurance tests of class I, as specified in 17.5 of GB/T 7261

⑶ the collision
Capable of withstanding the severity class I specified in Chapter 18 of GB/T 7261

Microcomputer protection terminal diagram

Shape and opening dimensions