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E-procurement platform:eps.yihe.cn

126kV Intelligent Combination Electrical Appliance

SLVA series national grid standardized low-voltage cabinet

Overview

? Yihe is a major supplier of complete electrical equipment for the power grid and power generation system. As the leader of the component group, Yihe actively responds to the standardization and customization requirements of the low-voltage cabinet of the State Grid. It participated in the first batch of joint design, completed the first batch of prototype trial production, passed the acceptance of experts from the State Grid, passed the full type test, and passed the testing and detection with high standards. Based on the standardization requirements of the State Grid for distribution network products, a total of 4 categories and 8 subcategories have been designed for low-voltage switchgear schemes. This design follows the principles of "safety, reliability, durability, unified standards, universal interchangeability, reasonable grading, and wide applicability", achieving the goal of simplifying operation and improving efficiency. Compared with similar products, it has obvious advantages.

Performance Characteristics

Unified design of standardized product solutions.
The electrical parameters are simplified into three levels and four categories

which not only meet the requirements of use but also have unified standards.
Standardizing secondary principles

interfaces

and labeling for safer installation

operation

and maintenance.
The short-term withstand current of the 2500A circuit breaker combination cabinet has increased to 65kA.
Unified civil engineering interface

standardized products can seamlessly connect with the foundation.
Operate at full load according to the decentralized system 1.0

and pass the temperature rise test without reducing the capacity.
Realize functional configuration and unified cabinet integration to meet interchangeability requirements.
Add EMC testing to improve product anti-interference performance.

Characteristic parameter

Required value

System nominal voltage

0.23/0.4kV

Rated insulation voltage

Whole cabinet, molded case circuit breaker (distribution level III): 690V, frame circuit breaker (power level IV): 1000V

Rated impulse withstand voltage

Molded case circuit breaker: 8kV, frame circuit breaker: 12kV

Overvoltage category

Grounding system

Directly grounded (TT or TN)

Rated frequency

50Hz

Pollution level

Level 3

Installation site

indoor

 

Characteristic parameter

Required value

Protection level

IP40, vent IP30D, cabinet top IP30

IK level

Metal parts: IK10, non-metallic parts: IK07

Ambient air temperature

-5 ~+40 , with a maximum daily average temperature of 35

altitude

≤2000m

EMC environment

Class A environment

Incoming feeder mode

The incoming line is from the top of the busbar, and the feeder line is from the bottom of the cable

Overall dimensions

Height: 2200mm, width: 800/1000mm, cabinet depth: 800mm (excluding front and rear door panels)

Eyebrow and door panel color

RAL7035