GB/T 32514.4-2016Resistance welding -- Welding current measurement for resistance welding -- Part 4: Calibration system (English PDF)

Foreword

GB/T 32514 "resistance welding current measurement" is divided into five parts.

- Part 1. Measurement guidelines;

Part 2. welding current measuring instrument with current sensing coil;

Part 3. Current sensing coils;

- Part 4. Calibration system;

Part 5. Confirmation of welding current measurement systems.

This part is part 4 of GB/T 32514.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part uses the translation method equivalent to ISO 17657-4.:2005 "Measurement of resistance welding current Part 4. Calibration system".

And the normative reference in this standard international documents are consistent with the relationship between China's documents are as follows.

GB/T 8366-2004 Mechanical and electrical requirements for solder resist welding machines (ISO 669.:2000, MOD);

Measurement of welding current for resistance welding - Part 2. Welding current measurement with current - induced coil GB/T 32514.2-2016 (ISO 17657-2.:2005, IDT).

This part is made by China Electrical Equipment Industry Association.

This part of the National Welding Technology Standardization Technical Committee (SAC/TC70) centralized.

This part of the drafting unit. Chengdu tripartite Electric Co., Ltd., Tian Tian Miaji Trade (Shanghai) Co., Ltd., Chengdu Institute of welding machine, deep Shenzhen Peng Yu Wei Technology Co., Ltd., Zhejiang Ken was Electrical Co., Ltd., Tianjin seven high-tech Co., Ltd.

This part of the main drafters. Du Wu, Zong Yang, Wang Hui, Liu Xingwei, Zhu Xuanhui, Yang Weiguo.

Measurement of welding current of resistance welding Part 4. Calibration system

1 Scope

This part of GB/T 32514 specifies the use of resistance welding current measurement in single-phase alternating current (50Hz or 60Hz) or DC Measurement system for current measurement systems, current sensors, welding current meters, and monitoring devices with current sensors and calibration procedures.

The calibration procedure applies to a welding current range of 0.5kA to 25kA.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 32514.3-2016 Resistance welding current measurement - Part 3. Current sensing coils (ISO 17657-3.:2005, IDT) ISO 669 resistance welding resistance machine mechanical and electrical requirements (Resistancewelding-Resistanceweldingequip-ment-mechanicalandelectricalrequirements ISO 17657-2 Resistance welding current measurement - Part 2. Welding current measuring instrument with current sensing coil (Resistancewelding-Weldingcurrentmeasurementforresistancewelding-Part 2. Weldingcurrent meterwithcurrentsensingcoil)

3 Terms and definitions

The following terms and definitions apply to this document.

Test (current) sensor test (current) sensor the current sensor to be calibrated.

Reference (current) sensor reference (current) sensor A high-precision condition has been calibrated for the current sensor to calibrate the current sensor.

Test welding current measuring instrument testweldingcurrentmeter the welding current meter to be calibrated.

No sense of shunt non-inductiveshunt with a very low inductance, with high accuracy and low resistance of the shunt.

Analog-to-digital converter;

Means for converting the analog input signal into a digital signal.