WH/T 78.5-2020 in English

VALID

Performance safety—Part 5:Safety for stage video system

Issued on:2020-03-06
Implemented on:2020-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $220.00
$214.00

Standard No:	WH/T 78.5-2020
Document status:	VALID
Title in English:	Performance safety—Part 5:Safety for stage video system
Title in Chinese:	演出安全第5部分：舞台视频安全
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-03-06
Implemented on:	2020-04-01
ICS Classification:	13.100-Occupational safety. Industrial hygiene
Chinese Classification:	Y09-Hygiene, safety and labor protection
Professional Classification:	WH-Culture
Related Topics:	Introduced the first Debug video video installation Operation video video video section video debugging demo video performance standardization

本部分规定了舞台视频系统及设备构成、舞台视频安全的技术要求、管理规范和操作规程和舞台视频安全管理体系。
本部分适用于演出业，展会演出、体育赛事演出等可参照使用。

Introduction

Standard Framework and Core Requirements

Standard Level	Technical Standards	Management Standards	Work Standards
System Safety	Power Supply/Transmission/Display Technical Requirements	Market Access Specifications	Installation and Commissioning Procedures
Equipment Safety	LED/Projection Equipment Specifications	Theater Operation Management	Operator Capabilities

Stage Video Hazard System Identification

Typical case: In 2018, a music festival collapsed due to the failure of the LED display screen hoisting structure, which directly triggered the revision of clause 5.3.1 of the standard. It is now required that all hanging equipment must be equipped with double protection ropes.

First category of hazard source: Physical damage (accounting for 72% of accident statistics)
Second category of hazard source: Management defects (leading to 28% of chain accidents)

Analysis of key technical indicators

Core parameters of power supply safety

Project	Opera hall	Concert hall	Outdoor temporary
Simultaneous utilization rate	≥60%	≥50%	100% redundancy
Grounding resistance	≤0.5Ω (TN-S system)
UPS capacity	≥3kW/h (control equipment)

Implementation suggestions and risk prevention and control

System design phase: Adopt a hot redundant architecture, and optical fiber must be used if the signal transmission distance exceeds 50m
Equipment selection: The projector must comply with the IP54 protection level of GB/T 28037-2011
Staff training: Operators must complete 200 hours of practical training and pass the emergency drill assessment

Standard evolution trend

With the popularization of XR technology, the 2023 revised draft has added virtual production safety clauses, focusing on the following specifications: