Transformer Core Grounding Current Monitor | Oman 2026
Transformer Core Grounding Current Monitor | Oman 2026 suppliers
Transformer Core Grounding Current Monitor | Oman 2026 factory
Transformer Core Grounding Current Monitor | Oman 2026 best
Transformer Core Grounding Current Monitor | Oman 2026 high quality
Transformer Core Grounding Current Monitor | Oman 2026
Country: Oman 2026
Quantity: 2
Material of hose: 316 stainless steel metal
Model: ALS50A-0.5 (10)A/3.53V
Power supply voltage: ±12V
Frequency range: 50Hz (400Hz)
Description
Grounding insight, guarding the iron core - integrated protection within your monitor.
General
Project Description
The Duqm 500MW/2000MWh Battery Energy Storage System (BESS) project in Oman is a grid side energy storage project led by the Oman State Grid Corporation (OETC), located in the Duqm Special Economic Zone. This project is positioned as the "core stabilizer" of the North South Interconnection Channel in Oman, providing power security for local industrial areas and achieving cross regional peak valley regulation. Energy storage power stations involve multiple step-up transformers, and their safe operation is crucial for the reliability of the entire energy storage system.
To ensure the safe operation of the transformer equipment in the project, an ALS50A-0.5 (10) A/3.53V transformer core grounding current online monitoring device is installed. As an independent intelligent monitoring unit, this device monitors the grounding current of the transformer core and clamps in real time, used for early detection of multi-point grounding faults caused by insulation degradation.
The monitoring module of this project adopts a design concept similar to that of the Kazakhstan project - real-time acquisition of current signals on the grounding leads of the iron core and clamps through high-precision sensors. Unlike the Kazakhstan project, which integrates modules into oil chromatography analyzers, the Oman project uses independent monitoring modules for flexible deployment and maintenance.
Technical Specification
|
Delivered to |
Oman |
|
Year |
2026 |
|
Standard |
GB11022,DL/T 596-1996,DL/T 572-95,QBO11-RX2009 |
|
Model |
ALS50A-0.5 (10)A/3.53V |
|
Measurement current range |
0-50OmA AC/0-3.53V AC |
|
Measurement current range |
0-10A AC/0-3.53V AC |
|
Power supply voltage |
±12V |
|
Frequency range |
50Hz (400Hz) |
|
Operating temperature |
-40°C to +85°C |
Drawings
Manufacturing
Current sensor
|
|
In the online monitoring device for transformer cores, the ALS50A-0.5(10)A/3.53V sensor serves as the front-end sensing core component, specifically designed for real-time detection of leakage currents in the grounding leads of transformer cores and clamping pieces. The sensor boasts exceptional sensitivity, capable of precisely measuring minute current variations at the microampere (μA) level, effectively capturing early-stage characteristic quantities such as initial insulation moisture ingress and core multi-point grounding faults. |
Testing
|
No. |
Inspecting item |
Standard requirements |
||||||
|
1 |
Appearance inspection |
Surface clean, scratch-free, with correct labeling and accessory packaging |
||||||
|
2 |
Basic error measurement |
Test specification ( mA) |
Output 1 (V) |
Output 2 (V) |
Test specification (A) |
Output 1 (V) |
Output 2 (V) |
Bear fruit |
|
0 |
0.00023 |
0.00020 |
0 |
0.00013 |
0.00012 |
Qualified |
||
|
25 |
0.172 |
0.172 |
0.5 |
0.174 |
0.173 |
|||
|
100 |
0.704 |
0.704 |
2 |
0.705 |
0.706 |
|||
|
250 |
1.765 |
1.765 |
5 |
1.761 |
1.765 |
|||
|
400 |
2.825 |
2.824 |
8 |
2.823 |
2.825 |
|||
|
500 |
3.532 |
3.533 |
10 |
3.533 |
3.535 |
|||
|
600 |
4.239 |
4.240 |
12 |
4.242 |
4.243 |
|||
|
3 |
Insulation resistance |
The input voltage to the chassis must be≥20MΩ |
Qualified |
|||||
|
4 |
Insulation strength |
Power input terminal to the housing, industrial frequency, 15oov,1 minute |
||||||
Packing and Shipping
Packing
Shipping
Site and Summary
The Core Grounding Online Monitoring Module represents a vital complement to transformer diagnostic technology, offering enhanced detection of multi-point grounding faults and improved operational safety. Integrated as an IED backend module within the Transformer Dissolved Gas Analyzer, the system features a high-precision current sensor (ALT50A7-10A/A1) installed on the core and clamp grounding down conductors. It continuously monitors grounding currents from 0 to 10A AC with 4-20mA DC output, enabling early warning of insulation deterioration before faults escalate. With seamless IEC 61850 integration, robust terminal connections (SAKEW35, SAKDU 2.5N), and compliance with GB/T 11022, DL/T 596-1996, DL/T 572-95, and QBO11-RX2009, this module delivers reliable performance under harsh environmental conditions. As utility operators and industrial clients prioritize predictive maintenance and asset protection, the Core Grounding Online Monitoring Module will play an essential role in safeguarding transformer iron cores, complementing dissolved gas analysis for a complete, intelligent, and resilient power infrastructure for Kazakhstan and beyond.
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