Description

Overview

The Marmonix MVD-335 Pro is a wireless high-voltage phase detector for verifying phase relationships, phase sequence and frequency on power systems up to 500 kV. It uses two wireless units (host and detector) communicating at up to 200 m, allowing safe phasing across busbars and lines without trailing cables. Supporting both contact and non-contact phase detection, plus in-phase/out-of-phase characterization and 200-set data storage, it is an essential tool for substation commissioning, switching operations and utility maintenance.

Key Features

Wireless phasing at up to 200 m between units
Phase detection voltage from 10 V up to 500 kV
Contact and non-contact detection modes
Phase, phase-sequence and frequency measurement
Frequency 45-65 Hz with +/-2 Hz accuracy
In-phase and out-of-phase characterization
200-set data storage
Wireless link on 433/315 MHz

Applications

Substation commissioning and phasing
High-voltage switching operations
Line and busbar phase verification
Utility and grid maintenance
Power distribution testing

What’s in the Box

Marmonix MVD-335 Pro host and detector units
Insulated operating rods / adapters
Batteries
Carrying case and user manual

Why buy from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) is a trusted supplier of Marmonix test and measurement equipment in the UAE. We offer genuine products, competitive pricing, fast local delivery across Dubai, Abu Dhabi and the wider UAE, and knowledgeable after-sales support. Download the datasheet

Specifications

Power Supply	Host: DC9V, 6pcs 5 alkaline batteries, Detector: Zinc-manganese dry batteries 6F22, 9V
Phase Detection Distance	200m
Phase Range	0°~360°
Phase Detection Voltage	10V~500kV
Frequency Range	45.0Hz~65.0Hz; Accuracy: ±2Hz; Definition: 0.1Hz
Accuracy	≤±2Hz
Measure Range	AC 10V~500kV
Phase Range	0.0°~360.0°; Accuracy: ≤±12°; Definition: 0.1°
Data Storage	200 sets
Voltage Display Range	0.1kV~35kV
Functions	High-voltage phase detect, frequency, phase, phase sequence, electrical inspection
Phase Detect Modes	1. Contact Phase Detect: can contact wire which is below 35kV (bare wire) or 500kV (with insulation cover)
Phase Detect Modes	2. Non-Contact Phase Detect: conduct non-contact testing when bare wire exceeds 220kV, detect probe close to the wire gradually
Phase Characterization	1. In Phase: -25°~25°
Phase Characterization	2. Out of Phase: 95°~145° and 215°~265°
Transmission Frequency	433MHz, 315MHz

MARMONIX MVD-335 Pro Wireless High Voltage Phase Detector