Power Transmission and Distribution Equipment-Juhonkia

Grid transmission and distribution

Power transmission and distribution (T&D) equipment forms the electrical grid, moving electricity from generators to consumers, and includes essential components like transformers (to change voltage), circuit breakers & switchgear (for control & protection), transmission lines & towers (for long-distance transport), substations, and distribution systems (local delivery), ensuring safe, reliable, and efficient power flow through voltage step-up for transmission and step-down for usage.

Key Transmission & Distribution Equipment

Transformers: Step up voltage for efficient long-distance transmission and step down for local distribution.

Circuit Breakers: Automatically interrupt fault currents to protect equipment and the grid from damage.

Switchgear: Controls, protects, and isolates electrical equipment, managing power flow.

Transmission Lines & Towers: Conduct electricity over long distances at high voltages.

Substations: Facilities housing transformers, breakers, and switchgear to manage voltage levels and power flow.

Distribution Systems: Connect substations to end-users, including feeder circuits, switches, and secondary lines.

Voltage Regulators: Maintain stable voltage levels for consistent power quality.

IoT Devices & Sensors: Modernize the grid with real-time monitoring, data collection, and automation for predictive maintenance.

How They Work Together

Generation: Power plants produce electricity.

Step-Up: Station transformers in switchyards increase voltage for transmission.

Transmission: High-voltage lines carry power across long distances.

Step-Down: Substations reduce voltage for local distribution.

Distribution: Local lines and transformers deliver power to homes and businesses at usable voltages (e.g., 120/240V in North America).

Control & Protection: Circuit breakers and switchgear maintain grid stability and safety at every stage.

Juhonkia specializes in R&D, production and supply of high-quality power transmission and distribution equipment. Our portfolio covers transmission equipment (power transformers, GIS) and distribution equipment (ring main units, prefabricated substations), all certified by CNAS, IEC and State Grid. We provide tailored solutions for wind power, metro, industrial parks, supporting stable power supply for global customers since 2010.

Technical Advantages & Quality Assurance

1.Technical Advantages

Smart Monitoring Technology

Equipped with IoT sensors: Real-time collect equipment temperature, partial discharge, load current data
Data transmission: connect to user’s power monitoring platform
Early warning function: Predict potential faults 7-14 days in advance (proven by 3-year operation data)

Environmental Adaptation Technology

High-temperature resistance: Equipment can operate stably at -40℃ - 40℃
Dustproof and waterproof: Protection level up to IP67

2.Strict Quality Control Process

Full-Link Testing

Incoming material inspection: 100% inspection of core components (e.g., transformers, circuit breakers) with inspection reports
Semi-finished product test: Insulation resistance test, mechanical operation test
Factory final test:

72-hour full-load operation test (all units must pass)
On-site simulation test (simulate user’s actual working conditions)

Quality Data

Factory pass rate: ≥99.92% (2023 annual data)
Customer complaint rate: ≤0.08% (2023 annual data)
Average service life: 15+ years (verified by 10-year old equipment in Zhejiang Grid)