Table of Contents

Overview

The Wireless High Voltage Phase Detector is an all-in-one intelligent testing instrument designed for high and low voltage power systems. Composed of a handheld receiver, dual X/Y sensing probes and telescopic insulated rods, it supports both contact and non-contact phase verification for 10V to 550kV circuits.

Equipped with a color LCD screen and real-time voice alerts, it displays frequency, phasor diagrams and phase results clearly. With a maximum wireless measuring distance of 160m in open spaces, it ensures great operational safety. Besides phase checking, it also works as a high-voltage electroscope, phase sequence meter and transformer vector group tester for comprehensive substation onsite maintenance.

Product Features

Model HF-CH-211 Fully Intelligent Wireless High & Low Voltage Phase Detector, also known as fully intelligent wireless voice high voltage phase detector or wireless high voltage phase tester, is simply referred to as phase detector. It consists of a wireless receiver, X/Y probes and telescopic insulating operating rods.

The receiver is fitted with a 3.5-inch true-color liquid crystal display, which simultaneously displays phase checking results, phase values, frequency and phasor diagrams on one screen. It offers voice prompts including “X signal normal”, “Y signal normal”, “in-phase” and “out-of-phase” for clear and intuitive operation.
Its maximum phase checking distance reaches 160 meters in open areas, enabling intelligent phase verification for power lines ranging from 10V to 550kV. For bare conductors of 35kV and below, direct contact phase checking is available; for bare conductors above 35kV, non-contact phase checking is adopted. During non-contact measurement, slowly bring the probe close to the tested conductor, and phase checking will be completed once the electric field signal is induced, eliminating direct contact with high-voltage conductors for enhanced safety.

This device integrates the functions of a high voltage electroscope, high voltage phase meter and high voltage phase sequence meter, applicable for voltage verification, phase sequence testing and transformer vector group judgment, etc.

Technical Parameters

Item	Specification
Functions	High & low voltage wireless voice phase checking, frequency, phase angle, phase sequence and voltage detection test
Power Supply	DC 3.7V rechargeable lithium battery, USB charging port; approx. 10 hours continuous working time
Transmission Mode	315MHz, 433MHz wireless transmission
Maximum Phase Checking Distance	Approx. 160 m
Display Mode	3.5-inch true-color LCD screen
Measuring Range	Phase check voltage: AC 10V ~ 550kV Phase angle: 0.0° ~ 360.0° Frequency: 45Hz ~ 75Hz
Resolution	0.1° (phase); 0.1Hz (frequency)
Accuracy	Phase: ±10° (23℃±5℃, RH ≤80%) Frequency: ±2Hz (23℃±5℃, RH ≤80%)
Phase Discrimination Standard	In-phase: 30° ~ 30°; Out-of-phase: 90°~150° & 210°~270°
Voice Function	Voice prompts for in-phase, out-of-phase, X/Y signal normal, etc.
Insulating Rod Dimension	Fully extended: 5m; Retracted: 1m (5 sections)
Data Storage	9999 groups
Phase Checking Method	Contact: Direct contact for bare conductors ≤35kV / insulated lines ≤110kV Non-contact: Induction measurement for bare conductors ＞35kV & lines ＞110kV Both operated with insulating rod
Voltage Detection Indication	Buzzer beep tone on detector
Gear Switching	Automatic shifting
Sampling Rate	2 times per second
Device Overall Size	Detector: 145mm×60mm×48mm Receiver: 250mm×100mm×40mm
Backlight Control	Adjust brightness via up/down arrow keys
Induction Sensitivity Control	Auto gain adjustment based on electric field, adaptable to dense cable environments
Data Hold	Press HOLD to freeze data; press again to cancel
Exit Function	Press ESC to exit current page and return to upper menu
Data Query	Enter query mode with ENTER key; scroll records via arrow keys
No Signal Prompt	Display “—-” when no signal received
Auto Power Off	Auto shutdown after 15 mins idle to save power
Low Battery Reminder (＜3.2V)	Detector: Power indicator flashing Receiver: Low battery icon displayed
Rated Current	Detector: Max 35mA Receiver: Max 300mA
Weight	Detector: 205g (with battery) Receiver: 395g (with battery) Insulating rod: 1.45kg Total weight (with case): 9.8kg
Operating Temperature & Humidity	-10℃ ~ 40℃, RH ≤80%
Storage Temperature & Humidity	-10℃ ~ 60℃, RH ≤70%
Anti-interference	Anti strong electromagnetic interference; resistant to 315MHz / 433MHz co-frequency disturbance
Dielectric Strength	Insulating rod: AC 110kV/rms (full length both ends) Detector: 2000V/rms (housing terminals) Receiver: 2000V/rms (housing terminals)
Structure & Protection	Drip-proof Class II, IP63
Compliant Standards	GB13398-92, GB311.1-311.6-8, 3DL408-91, DL/T971-2005 IEC 61481-A2:2004, IEC 61243-1 ed.2:2003
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Packing List for Wireless High Voltage Phase Detector

No.	Item Description	Specification	Unit	Quantity	Remarks
1	Wireless High Voltage Phase Detector Host	Wireless induction, high voltage phase detection, digital display	Set	1	Main equipment
2	High Voltage Insulating Rod	Insulated, anti-slip, high voltage resistant, telescopic	Piece	1	Supporting use
3	Wireless Receiving Antenna	High sensitivity, anti-interference	Piece	1	Original matching
4	Rechargeable Lithium Battery	High capacity, long standby	Piece	2	Spare battery included
5	Special Charger	Constant voltage and current charging	Piece	1	Special for equipment
6	User Manual	English Version	Copy	1	Operation & maintenance instruction
7	Product Qualification Certificate	Factory inspection qualified	Copy	1	Official certification
8	Hard Waterproof Storage Case	Shockproof, waterproof, portable	Piece	1	Packaging & storage

FAQ for Wireless High Voltage Phase Detector

Q1: What voltage range does this wireless high voltage phase detector support?

A1: It covers a wide voltage spectrum from 10V to 500kV, compatible with low-voltage distribution lines, medium-voltage ring network cabinets, and high-voltage overhead transmission lines. It supports both contact and non-contact detection modes to adapt to different voltage level tests.A1: It supports 10V–500kV voltage range, compatible with low/medium/high-voltage power equipment and lines. Dual contact and non-contact detection modes adapt to different voltage test scenarios.

Q2: What is the wireless transmission distance of the device?

A2: The open-area wireless transmission distance reaches up to 200 meters, ensuring safe long-distance operation on site. The stable wireless signal effectively avoids signal interference in complex substation and line environments.A2: It features a maximum 200-meter wireless transmission distance in open areas. The anti-interference stable signal ensures safe and reliable long-distance operation in complex substation and line environments.

Q3: What is the phase detection accuracy of the instrument?

A3: The phase difference detection accuracy is within ±5°, and the self-calibration error is ≤±3°, meeting national power industry testing standards. The sampling rate is 10 times per second, ensuring real-time and accurate data output.A3: Phase difference detection accuracy: ±5°, self-calibration error ≤±3°, compliant with power industry standards. 10Hz high sampling rate guarantees real-time and precise test data.

Q4: What working scenarios is the detector suitable for?

A4: It is widely usedWidely applicable for phase checking, phase sequence judgment, and line fault detection in power plants, substations, overhead transmission lines, cable lines,s and ring network cabinets. It supports, covering daily power inspection, line commissioning, and maintenance operationswork.

Q5: What are the differences between contact and non-contact detection modes?

A5: For lines of 35kV and below, contact detection can be adopted for direct and precise measurement. For lines above 35kV, non-contact detection is mandatory—slowly approach the conductor with the probe for induction testing, which greatly improves operational safety.A5: Contact mode: for ≤35kV lines, delivers high-precision direct measurement. Non-contact mode: mandatory for >35kV lines, adopting inductive detection to greatly improve operational safety.

Q6: What data and functions can the device display?

A6: Equipped with a 3.5-inch true-color LCD screen, it synchronously displays phase difference, frequency, phase sequence, vector diagram, and in-phase/out-of-phase results. It also has intelligent voice prompts to automatically report signal status, phase sequence type and detection results, realizing visual and audible dual judgment.A6: Equipped with a 3.5-inch color LCD screen, it displays phase difference, frequency, phase sequence, vector diagram and phase judgment results in real time. Intelligent voice broadcast realizes dual visual and audible judgment of test results.

Q7: Does the device have automatic power-off function?

A7: Yes. The instrument willdevice automatically shut downpowers off after 1 hour of inactivity to effectively save power and extend battery life, which is convenient for long-termime field operation.

Q8: Can the device store detection data?

A8: Yes. It supports real-time storage of test data, and the built-in clock can calibrate date and time to facilitate data recording, query and subsequent sorting and analysis of test results.A8: Yes. It supports real-time test data storage with built-in time calibration, facilitating data query, sorting and analysis.

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