home products Calibrator DDSY720/721 Single-phase Prepayment kWh Meter

DDSY720/721 Single-phase Prepayment kWh Meter

Place of Origin:China Guangdong	Model Number:DDSY720/721

Company Info

Company Published: 2007
Online Postings: Products , Selling Leads
Country/Territory: Hong Kong
Business Type: Trading Company, Agent, Distributor/Wholesaler
Number of Employees: 11 - 50 People

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Terms of Payment: T/T

Detailed Product Description

DDSY720/721 Single-phase Prepayment kWh Meter

APPLICATION:

The meter is used by the sigle phase power consumer who use the energy with balance method after purchasing it. And it is also used for power load control.

FUNCTIONS:

l Measure forwardreverse active energy and accumulate active energy in the same direction.

l Purchase in advance of using electricity, allowed to overuse some amount energy..

l LED or LCD display accumulative energy and remaining energy

l Automatically cut off electricity under overload condition;

FEATURES:

l A household with one meter, one meter with one password, high security with counterfeit-proof function.

l Three level alarm remind user of purchasing electricity

l Low power loss and high reliability

l Shunt-proof logic IC without shunting

PARAMETERS:

Model		DDSY 720	DDSY721
Class	Active	1	2
Display		LED /LCD
Rated Voltage		220V
Rated (Max.) current		2.5(10)A 5(20)A 5(30)A 10(40)A 20(80)A
Power Loss	V circuit	1W4VA
	I circuit	1VA
Working temperature		-2555
Limited temperature		-4070
Relative humidity		≤85%
Voltage range		0.7Un1.3Un
Reference frequency		50Hz/60Hz
Start Current		0.004Ib
Dimension		155mm×108mm×58mm