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AD220 Single Phase Voltage Monitoring Relay Over / Under Voltage Protector 220V 380V

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Good quality Single Phase Voltage Monitoring Relay for sales
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AD220 Single Phase Voltage Monitoring Relay Over / Under Voltage Protector 220V 380V

China AD220 Single Phase Voltage Monitoring Relay Over / Under Voltage Protector 220V 380V supplier
AD220 Single Phase Voltage Monitoring Relay Over / Under Voltage Protector 220V 380V supplier AD220 Single Phase Voltage Monitoring Relay Over / Under Voltage Protector 220V 380V supplier

Large Image :  AD220 Single Phase Voltage Monitoring Relay Over / Under Voltage Protector 220V 380V

Product Details:

Place of Origin: China
Brand Name: GINRI
Certification: CE
Model Number: SVR1000

Payment & Shipping Terms:

Minimum Order Quantity: 10Pcs
Packaging Details: 1 relay in individual box
Delivery Time: 5-8 working days
Payment Terms: L/C, T/T, Western Union,Paypal
Supply Ability: 20000Pcs per Month
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Detailed Product Description
Application: Pump,fan, Air Conditions Rated Voltage: DC12V/AC-DC 24-48/AC-DC 110-240V
Contact: 1co 1nc Approvals: CE

 

GINRI SVR1000 Single Phase Voltage Relay Adjustable Over Under Voltage Protection Monitor Relay with LCD display
 
The Features of SVR10000
-- Powered by the measuring circuit
-- Built-in LCD and keypad afford a precise,digital setting
-- Compact modular 43mm housing
-- Adjustable over- and undervoltage threshold
-- Independent adjustable delay time for overvoltage, undervoltage
-- 1 CO & 1NC contacts
-- Fault recording with last 3 faults
 
♦ Protective Functions
-- Overvoltage
-- Undervoltage
 
♦ Typical Applications
• Pumps • Fans
• Blowers • Motors
• Compressors
 
♦ Approvals
• CE • CCC
 
♦ Technical data

 

Model SVR1000/D12 SVR1000/AD48 SVR1000/AD220
Measuring circuit A1+,A2-
Rated voltage DC 12V AC/DC 24~48V,50/60Hz

AC/DC
110~240V,50/60Hz

Monitoring functions overvolatege, undervoltage
Overvoltage setting range

DC
9.0~18.0V adjustable

AC/DC 20.0~80.0V adjustable

AC/DC
50.0~300V adjustable

Undervoltage setting range

DC
9.0~18.0V adjustable

AC/DC 20.0~80.0V adjustable

AC/DC
50.0~300V adjustable

Voltage hysteresis 0.1~6.0V adjustable 0.1~30.0V adjustable 1.0~90.0V adjustable

Delay time for overvoltage
and undervoltage

0.1-999s adjustable
Reset mode Manual/ Automatic/Automatic with power-on delay
Delay time for reset 0.1-999s adjustable
Indicators LCD indicating voltage,operationand fault status
Output contacts 1 CO 1NC
Contact capacity 6A ,250VAC
Dimensions (H x W x D) 80×43×54mm
Mounting DIN rail

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
12
 
 
The reason of used the over under voltage relay
 
Take the electric equipment on the line as an example. If the electric energy can't keep up, the voltage will drop very much. According to the formula: P=U*I, U becomes smaller, I will become larger, and U is smaller than the current I on the line. It will be bigger.
For example, when U starts, it is U1. At this time, I=I1=P/U1. If the power can't keep up at this time, because the power consumption P needs to be used, the U drops to 0.5U1. Current:
I=P/U=P/(0.5U1)=2*(P/U1)=2I1
In other words, if the voltage drops by half, the current will double.
In this case, the problem comes. According to the well-known Joule law: heat quantity Q=I*R*T
The resistance value R of any device on the line is certain. If the previous line heat is Q1=I1*R*T, the voltage U changes to 0.5U1, the current I is 2I1, and the line heats up Q2= I*R* T = (2I1) * R * T = 4 * I1 * R * T = 4Q1, that is, if the voltage drops by half, the heat generated per unit time will become four times the previous one.
It can be seen that the change of the heat per unit time of the device on the line is inversely proportional to the square of the change of the line voltage. Therefore, the more the voltage drops, the greater the heat generated by the device on the line, and the heat accumulation of the device on the line exceeds the thermal diffusion. The speed of the device will become higher and higher, which may cause accidents such as fire.
Therefore, it is necessary to set a threshold voltage for the line. When the line voltage drops to this threshold voltage, the line is cut off by a relay protection device or the like, thereby ensuring that the device on the entire circuit does not burn out. This is called undervoltage protection.

Contact Details
Wenzhou Ginri Power Automation Co., Ltd.

Contact Person: sales

Tel: +8613757785251

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