NDTQ-H Intelligent Bidirectional Substation Area Identifier

Product Introduction

        Intelligent Bidirectional Transformer Area Identifier is an upgraded product of the transformer area identifier, serving as a valuable tool for power management departments to reduce losses and improve efficiency. NDTQ-H Intelligent Bidirectional Transformer Area Identifier is an improved version based on the Bidirectional Transformer Area Identifier, developed by the company into a comprehensive identifier for transformer area users and line branches.

       It incorporates the advantages of bidirectional reconfirmation using a combination of pulse current signals and FSK power carrier signals for transformer area identification. With one set of equipment and the addition of a change clamp head, it can detect up to 12 line branches, providing results for both transformer area attributes and line branches simultaneously.

Product Features

☆、Utilizes a combination of pulse current and FSK power carrier signals for bidirectional identification. It can also operate using carrier or pulse current methods individually. One device can accurately identify transformer areas even under conditions where adjacent transformers share high voltage, ground, or cable trenches. The pulse current test has a theoretically unlimited transmission distance and strong anti-interference capability, ensuring accurate identification of user transformer area attributes even in long-distance, high-interference line tests.

☆、Compatible with the functions of traditional carrier-based transformer area identifiers.

☆、Flexible detection methods: power carrier, carrier combined with pulse current, and pulse current. Users can freely switch between methods based on field requirements.

☆、Employs high-sensitivity Permalloy core current transformers with automatic full-range amplification adjustment, overcoming interference from high-frequency harmonic currents of varying intensities at test sites.

☆、Uses the extension unit to send pulse currents for convenient branch (switch) judgment. It can simultaneously identify up to 12 line branches as per user requirements and distinguish branches and phases during transformer area identification.

☆、The main unit features a high-strength aluminum alloy shell and an aluminum alloy case, allowing testing without removing the main unit. Operation is simple and convenient. The instrument operates within a temperature range of -40℃ to 70℃ and relative humidity up to 93% RH.

☆、Both main and extension units are powered by on-site power sources, requiring no additional power supply.

☆、Provides two detection methods: phase current detection and neutral line current detection. Users can choose to detect primary current, secondary current, or neutral line current based on field conditions.

☆、The main unit's voltage wiring uses an integrated plug-and-socket design, allowing voltage connection with a single plug-in operation for convenience. The neutral line clamp current transformer uses a specialized clamp head designed for wide neutral aluminum busbars.

☆、The extension unit's voltage input includes automatic 380V voltage protection, preventing potential damage to the extension unit from phase-to-phase connections during testing.

☆、Equipped with storage function, capable of storing 30,000 operation records, which can be transferred to a backend computer for management.

☆、Both main and extension units feature large LCD screens for easy display modification, serial number management, and storage management.

Technical Parameters

☆、Operating Conditions Power Supply:  AC 220V±30% Ambient Temperature: -40℃ to 70℃ Relative Humidity: ≤93%
☆、Main Technical Parameters: Carrier Frequency: 127kHz
      Carrier Bandwidth: 9kHz
      Carrier Transmission Rate: 100BPS
      Main Unit Power Consumption: Less than 9W
      Handheld Terminal Power Consumption: 1.5W
☆、Current Clamp Diameter:     Neutral Line Current Clamp Size: 90*55mm, Secondary Current Clamp Size: ∮8mm
☆、Protection Level:     IP65