Active Energy Meter

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Description

Product Detail

PS7777-series digital active/reactive power meter

Summary&application:

PS7777-series digital active power meter is the new generation of programmable intelligent instrument, integrated with measurement, alarming, transmission and communication, mainly applied into real-time measurement and indication for the active power in the three phase electrical circuit, conducting limited alarming output for transmission output towards electrical data according to the set measured value, realizing networking through RS485 communication interface and the host computer.

1.Main functions and characteristics

?It can measure and display single/three phase active power value with digital direct reading method.

?Extendible for analog quantity output function, transmitting specification of 4~20mA, 0~20mA, 0~10mA which is optional.

?Extendible for switch quantity output function for the relay, realizing upper/lower-limit alarming output.

?Extendible for RS-485 communication interface, adopting the standard ModBus-RTU communication protocol and the baud rate can be set.

?Parameters including current/voltage ratio of the meter, upper/lower-limit alarm value, alarming return difference, communication address of the meter, baud rate, transmitting output mode, transmitting output range, etc. are programmable.

2.Model specification and selection description:

(Unit: mm)

Model	Measurement display			T(communication) RS485 interface	K Switch quantity output	B analog quantity output	External size	Display mode
Model	Single phase active power	Three phase three wire active power	Three phase four wire active power	T(communication) RS485 interface	K Switch quantity output	B analog quantity output	External size	Display mode
PS7777-1	?			@	@	@	96×48	LED display
PS7777-1Y			?	@	@	@	96×48
PS7777-1S		?		@	@	@	96×48
PS7777-2	?			@	@	@	72×72
PS7777-2S		?		@	@	@	72×72
PS7777-3	?			@	@	@	96×96
PS7777-3Y			?	@	@	@	96×96
PS7777-3S		?		@	@	@	96×96
PS7777-5	?			@	@	@	120×60
PS7777-5S		?		@	@	@	120×60
PS7777-6	?			@	@	@	80×80
PS7777-6S		?		@	@	@	80×80
PS7777-7	?			@	@	@	160×80
PS7777-7Y			?	@	@	@	160×80
PS7777-7S		?		@	@	@	160×80
PS7777-8	?			@	@	@	120×120
PS7777-8Y			?	@	@	@	120×120
PS7777-8S		?		@	@	@	120×120

Note:

1.?means the intrinsic functions of the instrument

2.@means extendible corresponding optional functions of this series of instruments.

3.The size code with 2, 5, 6 can only be configured with any 2 types of function modules, the size code with 1, 3, 7, 8 can be configured with any of 3 types of function modules.

4.All the above models of instrument can be made corresponding reactive power meter (PQ7777 series).

3. Main technical performance and parameters:

Technical parameters	index
Wiring mode	Single phase, three phase three wire, three phase four wire
Input	Voltage	Rated value	AC100V, 220V, 380V
		Overload	Continuous: 1.2 times, instant: 2 times/1s
		Consumption	=1VA(each phase)
		Resistance	100V(about 120K), 220V(about 400K), 380V(about 600K)
	Current	Rated value	AC1A, 5A
		Overload	Continuous: 1.2 times, instant: 10 times/5s
		Consumption	=0.5VA (each phase)
		Resistance	<20mO(each phase)
	Measuring rang of the frequency		45Hz-65Hz
Output	Display mode Measuring accuracy		5-digit LED display, reactive power displays “-“ Voltage Class 0.5 Resolution 0.1V Current Class 0.5 Resolution 0.001A Active power Class 0.5 Resolution 1W Reactive power Class 1.0 Resolution 1var The unit can switch automatically, the decimals shift automatically
	Display range		0~9999MV(Mvar), display “----“ when out of the display range
	Communication	Mode	RS-485
		Protocol	MODBUS-RTU
		Baud rate	1200bps, 2400bps, 4800bps, 9600bps, 19200bps, assumed to be 9600bps
	Switch quantity output		Upper/lower limit alarm with the same one relay output, contact capacity:AC250V/2A, DC30V/2A
	Analog quantity output		DC0mA~10mA, DC0mA~20mA, DC4mA~20mA, Class 0.5, output overload=500O, the voltage output can be custom-made
Working power supply	Range		AC/DC85V~264V
	Consumption		<5VA