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NR5250 series wireless relay protection vector analyzer

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Product patent

Product description

Product Introduction

Main Feature

　　◆ Distributed wireless synchronous measurement of volt-ampere phase electrical parameters, wireless synchronous measurement of six-channel voltage, six-channel current amplitude and phase;

　　◆ It can be used as a three-phase volt-ampere phase meter when used alone;

　　◆ The phase accuracy of wireless synchronization measurement is within 0.5°;

　　◆ No need for GPS, avoid long time searching for stars;

　　◆ There is no need to put the cable to introduce the reference voltage, to avoid the PT secondary short circuit caused by the cable insulation or operation problems;

　　◆ It can simultaneously measure the CT signals of the differential protection of the transformer high and low voltage sides before the smart grid merging unit;

　　◆ Special customized antennas are used to easily cope with long-distance wireless communication in various complex environments in the station;

　　◆ Wireless repeater can be used to solve the problem of basement and well-shielded indoor wireless communication;

　　◆ Current amplitude and phase measurement can be as small as 1mA. It is very suitable for substation main transformer on-load test and new station or small load station current measurement;

　　◆ Low-voltage live line selection (cable identification) function.

Technical Parameters

Types of	Measuring range	unit	error	Resolution
Voltage	5 ~ 600V	V	0.5% x reading +5 words	0.1V
Current	0.001 ~ 6A (expandable)	A	0.5% x reading +5 words	0.0001A
Active power	0.005 ~ 3600	W	0.5% x reading(PF=1)	0.1W
Reactive power	0.005 ~ 3600	VAR	0.5% x reading(PF=0)	0.1Var
frequency	45 ~ 65	Hz	0.02Hz	0.01Hz
Phase	0 ~ 360	°	+ 0.2°	0.1°