GB/T 30839.31-2014Energy consumption grading for industrial electroheat installations—Part 31: Medium frequency coreless induction furnaces (English PDF)

1 Scope

This section GB/T 30839 specifies the intermediate frequency coreless induction furnace (hereinafter referred to as intermediate frequency coreless furnace) energy parameters, energy range, units

Its power consumption classification indicators and measurement methods.

This section applies to the working frequency higher than the frequency 50Hz, less than or equal to 1000Hz, the rated capacity within 1t ~ 60t range, Central

Frequency power semiconductor inverter device, smelting iron and steel, copper and its alloys and aluminum and iron coreless induction melting furnace holding furnace.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 10067.31-2013 electric equipment basic technical conditions Part 31. IF coreless induction furnace

GB/T 30839.1-2014 Industrial electric energy device classification - Part 1. General requirements

3 Terms and Definitions

GB/T 10067.31-2013 and GB/T 30839.1-2014 and as defined in the following terms and definitions apply to this document.

4 energy parameters

According to the provisions of GB/T 30839.1-2014 Chapter 6, IF no furnace energy consumption parameters for the selected unit power consumption.

5 energy range

Energy range IF no furnace unit power consumption involved should be GB/T 30839.1-2014 Chapter 7, comprising.

a) IF no furnace main circuit input power meter power consumption, including supporting rectifier transformers, converter means, and the main circuit power transmission line

Stove like power consumption, power consumption and furnace material including the furnace heat loss and energy efficient furnace charge and the like;

b) IF no furnace mechanical and electrical auxiliary equipment power consumption, including self-supporting for the furnace tilting, opening and closing the lid and other hydraulic and electrical transmission

Dynamic system, cooling system, and control and measurement systems, such as power consumption;

c) auxiliary heating energy, such as natural gas may be blown, oxygen and other input heat and converted into electricity consumption;

d) an outer charge preheating furnace power consumption, but use their own waste heat (eg exhaust fumes outside temperature) is not carried out by preheating the count;

e) other should be included in the power consumption.