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Switchgea
Development Directions of Switchgear under New Quality Productive Forces
      Enhancing development quality and transitioning from the previous extensive economic growth model to intensive, high-quality development are equally crucial for the evolution of switchgear.         The switchgear industry suffers from severe homogenization, with low-quality products proliferating unchecked through simple repetition, competing solely on price and cost while neglecting quality. This approach consumes vast material resources without regard for sustainability, prioritizing short-term compliance over long-term reliability.
2025/09/09
GWZC-9000 Drainage Pumping Station Automation System
Drainage Pumping Station Automation System—Forging a New Urban Flood Control Ecosystem
Drainage pump stations employ electromechanical systems for active water discharge, IoT and AI for precise regulation, and backup power for reliability. Digital twin platforms optimize decision-making with failure prediction and damage assessment. Each ¥100M investment reduces annual losses by ¥230M while saving 30% energy, as proven by Tokyo's flood defense system.
2025/07/23
Hydropower Station
Comprehensive Analysis of the Yarlung Zangbo River Hydropower Station
Massive hydropower potential, extreme seismic/geological challenges, unprecedented engineering (tunnels, dam, turbines), sensitive ecology, and critical transboundary impacts.​
2025/07/22
VT (Voltage Transformer ) Protection RelayRear View
Comprehensive Protection Relay: Full Analysis​
A comprehensive protection relay is an intelligent device that safeguards electrical systems by detecting faults (e.g., overcurrent, short circuits) and isolating affected equipment. It integrates multiple protection functions, ensures system reliability, and prevents damage. This guide covers its definition, working principle, protection targets, activation conditions, and outcomes.
2025/07/18
technical knowledge More
Main Transformer-Protection Panel
Transformer Protection Relay Panel:Composition and Function
Transformer Protection Relay Panel is primarily used in automation systems for substations and distribution stations in power systems of 11kV, 33kV, 132kV and above. Its main function is to ensure that the transformer can promptly trip the faulty circuit in case of overload, short circuit, gas relay activation, and other abnormal operating conditions, thereby protecting the main transformer from damage and preventing the expansion of faults.
2025/11/24
Miniaturizing 36kV Switchgear
Challenges in Miniaturizing 36kV Switchgear
  The miniaturization of switchgear is a common demand in the IEC market. For instance, the standard dimensions for 13.8kV (17.5kV), 1250A switchgear are typically 600mm in width and 2100mm in height, while 3150A versions are generally only 900mm wide.
2025/11/21
Feeder Protection Relay
Common Protection Functions for Feeder Protection Relays?
Feeder protection relays are a type of line protection relay and serve as critical devices in distribution systems for protecting power cables (feeders). They integrate multiple protection functions to achieve comprehensive, reliable, and selective protection. Below are the commonly used protection functions of feeder protection relays, along with their corresponding ANSI codes.
2025/11/14
Low-Voltage Switchgear
What are the common types of low-voltage switchgear?
For applications with limited budget, simple circuits, and no frequent changes, the fixed-mounted GGD is a cost-effective choice.         For applications with high requirements for supply continuity, frequent operation and maintenance, and a large number of circuits (e.g., Motor Control Centers (MCCs) in industrial plants, large commercial complexes), withdrawable types like GCK, GCS, or MNS are preferable.         For high-end projects or where specific brands are required, original series from international brands like ABB MNS, Siemens SIVACON, or Schneider Blokset are typically selected.
2025/11/14
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