The circuit breaker simulator is an indispensable key device for power system protection commissioning and training. It enables the safe and efficient completion of complete set tests for relay protection systems without affecting actual high-voltage circuit breakers. This article focuses on the application of the Circuit Breaker Simulator 861, exploring how it addresses the core challenges in power system testing and training.​I. Challenges in Power System Testing and Training​During relay prot

I.Core Product Advantages​​Integration of Digital and Analog Dual Modes​Supports digital signal output (e.g., SV, GOOSE) under the IEC 61850 standard, compatible with digital protection testing in smart substations.Simultaneously possesses high-precision analog output (voltage, current) for testing traditional electromagnetic and microprocessor-based protection devices.Achieves "one instrument for the entire substation," significantly improving testing efficiency and reducing equipment procureme

I.Application Scenarios & Core Requirements​The HLY-100 Circuit Resistance Tester, developed based on standards GB-74 and IEEE 694-84, integrates a DC high-current source, a digital ammeter, and an ohmmeter. It is tailored for the following three core scenarios, precisely meeting different user testing needs:Application ScenarioCore RequirementPain Points of Traditional SolutionsPower System Maintenance (Substations, Distribution Rooms, etc.)Periodically test the contact resistance of high-v

I.Solution Background and Objectives​​​(A) Industry Pain Points​Electrical equipment, during long-term operation, is affected by factors such as temperature, humidity, dust, and mechanical wear, making insulation layers prone to aging, damage, and moisture absorption. These issues can lead to leakage currents, short circuits, or even fire accidents. Traditional detection methods suffer from the following pain points:Testing equipment is bulky and lacks portability, making it difficult to adapt t

Lightning arresters are core equipment in power systems for defending against lightning overvoltages and switching overvoltages. The proper operation of their discharge counters directly determines the effectiveness of the arrester's protective function. If a counter fails, maintenance personnel cannot accurately assess the arrester's operational status, potentially leading to serious consequences such as equipment breakdown and power outages.The WDFJZ-V Handheld Arrester Discharge Counter provi

Applicable Fields:​​ Municipal Engineering | Power Systems | Communication Construction | Oil and Gas | Construction​I. Industry Pain Points: The Invisible "Urban Lifelines" Pose Significant Construction Risks​During urban infrastructure construction and maintenance, a vast network of critical underground facilities—including power cables, communication fiber optics, water supply pipelines, gas pipes, and drainage systems—remains hidden beneath the surface. These concealed systems, o

I. Background and Objectives​​Current Situation Analysis​Large public buildings, characterized by their vast scale and significant electricity consumption, have become key targets for electricity management. The main existing problems are the lack of institutional constraints regarding energy conservation and insufficient relevant management experience, leading to significant issues of electricity waste.​Core Objectives​Establish a comprehensive energy conservation system and a targeted supervis

I.Overview​This solution is designed to address the severe challenges faced by traditional digital power meters in complex industrial electromagnetic environments, particularly the core pain point of insufficient anti-interference capability. Through a series of key innovative hardware circuit designs, this solution significantly enhances the meter's ability to withstand Electrical Fast Transient (EFT) bursts and Electrostatic Discharge (ESD). Simultaneously, it optimizes the system architecture

I.Overview​This solution utilizes a high-performance main control chip and a multi-module collaborative architecture to achieve precise acquisition, processing, display, and remote transmission of three-phase power grid parameters, meeting the real-time monitoring requirements of power systems. While ensuring measurement accuracy, this digital power meter effectively addresses interference issues through multiple technological innovations and optimizes production costs.​II. Overall Meter Structu

1. Solution Overview​This solution aims to provide a high-performance, high-reliability digital power meter design. The core of the solution lies in an innovative master clock circuit design for the main control chip, which effectively resolves the inherent weaknesses of traditional digital power meters regarding anti-electrostatic interference (ESD). The meter can stably pass the 15kV non-contact electrostatic discharge test, while also featuring advantages such as a simplified circuit structur