MEWOI2500C Satellite timing remote wireless high voltage phase detector

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INTRODUCTION

The MEWOI2500C satellite timing remote high-voltage phase detection meter has both ultra-long-distance phase detection and ordinary short-range phase detection functions. The timing accuracy is less than 20nS, and it can receive GNSS signals of six satellite timing systems at the same time, and realize joint timing to ensure accurate phase detection. The normal phase detection distance is 260 meters (in an open space), and the satellite phase detection distance is 500 kilometers. This phase-checking instrument can perform phase-checking not only in high-voltage lines, but also in high-voltage switch cabinets (central cabinets, ring main units, etc.) Automatic phase checking from 10V to 500kV voltage, easy to operate, time-saving and fast. At the same time, it also has the functions of testing phase, frequency, phase sequence, transformer group judgment, etc., as well as power inspection and voltage level display functions. When the line voltage exceeds 110kV, the non-contact phase detection must be used. During the phase detection, the metal probe of the detector is gradually approached to the wire. When the electric field signal is sensed, the phase detection can be completed without direct contact with the high-voltage wire, which is safe and fast. When it is used for the phase-checking of the ring main unit, the detector must use the probe and the test line of the ring main unit.

MEWOI2500 satellite timing remote high-voltage phase detector consists of 2 sets of instruments, each set of instruments includes host, X detector, Y detector, telescopic insulating rod, monitoring software, etc. The host adopts a 3.5-inch true color LCD screen, which can display the phase on the same screen , frequency, phase sequence and phase detection results; vector diagram indication, phase indication, clear and intuitive; with "X signal is normal, Y signal is normal, in-phase, out-of-phase" and other voice prompt functions, making the test easier and easier.

Main Features

1. Using satellite timing wireless transmission technology, the phase detection distance is 500km, the timing accuracy is high, and the phase detection is accurate and convenient to operate.

2. Voice prompt: "X signal is normal, Y signal is normal, in-phase, out-of-phase".

3. Using a 3.5-inch LCD color screen, it can display the phase, frequency, phase sequence, and phase detection results on the same screen, and the dynamic vector diagram indication is clear and intuitive.

4. The meter also has the function of electricity inspection, which can display the voltage level. Data storage function, can store 200 sets of data.

Technical Specification

1. Range and accuracy

Measurement function	range	precision	Resolution
phase	0 °～360°	≤±10°	1 °
frequency	45.0Hz～65.0Hz	≤±2Hz	0.1Hz

2. Other parameters

Function	Wireless high-voltage satellite phase detect, frequency, phase, phase sequence, electrical inspection test, high-voltage switchgear (central cabinet, ring network cabinet and other phase detection)
phase detection mode	Satellite remote phase detection mode, short-range normal phase detection mode
power supply	Host: 3.7V, 2600mAh rechargeable lithium battery Detector: 3.7V, 600mAh rechargeable lithium battery
phase detection	Contact phase detection: ≤110kV line Non-contact phase detection: When ≥10kV and ≤110kV are displayed, the phase detection can be carried out on the cable insulation; when the line voltage is greater than 110kV, the non-contact phase detection must be used.
phase detection voltage	AC 10V ～ 500kV
Satellite phase detection distance	500km
Normal phase detection distance	260m
Differential characterization	In-phase: -20°～20°; Out-of-phase: 100°～140° and 220°～260°
range	Test phase: 0°～360°
range	Test frequency: 45.0Hz～65.0Hz
Accuracy	Phase: ≤±10°
Accuracy	Frequency: ≤±2Hz
Resolution	Phase: 1° Frequency: 0.1Hz
LCD size	3.5-inch true color screen; display area: 71mm×53mm
Electric inspection instructions	"Beep-beep-beep" beep
Voltage display	Display voltage level
Satellite timing accuracy	Less than 20nS
Star search instructions	Dynamic display of "----" symbol when searching for satellites
Search time	The first star search time is about 2 minutes, the second time after a successful star search is about 15 seconds, and the subsequent hot start is about 1 second.
No satellite duration	After the satellite search is successful, try to continue the phase detection until there is no satellite signal.
auto switch timing mode	According to the strength of the satellite signal, it can automatically switch the satellite receiving core phase and the timing core phase, and there is no need to select the satellite mode or the timing mode.
Display rate	2 times/sec
data storage	200 groups (power failure will not lose data)
Automatic shut-down	In normal phase detection mode, it will automatically shut down after about 15 minutes of no operation. The satellite remote phase detection mode is turned on for about 45 minutes and automatically shuts down without any operation.
battery voltage	The host battery has a 4-grid power display. When there is only 1 grid or 0 grid, please charge it; when the indicator light of the detector flashes rapidly, it means that the battery voltage is low, please charge.
Rated current	Detector: 30mA max; Host: 150mA max
Instrument quality	Instrument: 950g (including battery); total mass of packaging and insulating rod: about 3.0kg
Instrument size	Host 195mm×100mm×45mm; detector 130mm×65mm×45mm
Insulation rod length	About 4500mm
Insulation test	Both ends of the insulating rod after stretching: AC 220kV/rms Host and detector: AC3700V/rms (between exposed metal and plastic casing)
outside interference	No strong electromagnetic field; no 433MHz, 315MHz co-channel interference
Working temperature and humidity	-10℃～40℃; below 80%rh
Storage temperature and humidity	-10℃～60℃; below 70%rh
Suitable for safety regulations	GB13398-92, GB311.1-311.6-8, 3DL408-91 standards and the national power industry standard "General technical conditions for 1kV ~ 35kV portable phase detection devices for live work DL/T 971-2017" requirements

Selection Guide

Model	Product Name	Phase detection voltage	Phase detection distance	Satellite Phase Detection Distance
MEWOI2500	Wireless high voltage phase detector	AC 10V-500KV	260m	/
MEWOI2500B	Remote wireless high voltage phase detector	AC 10V-500KV	260m	5000m
MEWOI2500C	Satellite timing remote wireless high voltage phase detector	AC 10V-500KV	260m	50KM
MEWOI2520	Ring Main Unit Wireless Phase detector	AC 1V-600KV	30m	/
MEWOI2540	Metalclad withdraw switchgear wireless phase detector	AC 10KV-35KV	20m
MEWOI2560B	Multifunctional satellite remote wireless high voltage phase detector	AC 10V-500KV	260m	5000m
MEWOI2600	Wireless high voltage phase detector	AC 200V-2200KV	60m

label: satellite timing wireless high voltage phase detector