Valid

GB/T 7894-2023Fundamental technical requirements for hydro-generators (English PDF)

水轮发电机基本技术要求

Preview PDF

This is a limited preview

Buy now to download the full PDF (44 pages)

Need quotation for your management?

Get a formal quotation for GB/T 7894-2023 in 30 minutes.

Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 7, 2023

Implementation date

April 1, 2024

Scope

GB/T 7894-2023 is the English-translated version of 水轮发电机基本技术要求.

GB/T 7894-2023 is the Chinese standard "Fundamental technical requirements for hydro-generators".

Its scope clause reads: This document specifies the overall technical requirements, product identification, material and component storage, factory and site Testing and supply requirements, etc. This document is applicable to three-phase 50Hz/60Hz salient pole synchronous power generation directly connected to the hydraulic turbine and with a rated capacity of 25MVA and above. machine (hereinafter referred to as turbine generator).

Hydro-generators with a rated capacity less than 25MVA shall refer to this standard. Note. For special provisions on pumped hydro generator motors, see GB/T 20834. Its clauses include normative reference documents.

Found what you need?

Document preview — GB/T 7894-2023

National Standard of the People's Republic of China

ICS: 29.160.20
Classification: K 21

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative reference documents
3 Terms and Definitions
4 On-site operating conditions
5 Quotas and Parameters
6 temperature
7 Operating characteristics and electrical connections
8 Insulation system
9 Mechanical properties and design
10 Vibration and swing
11 Noise
12 Basic structure
13 Ventilation and cooling system
14 Braking system
15 Devices and components for control and protection systems
16 Fire extinguishing system
17 Logo
18 Materials and Parts Storage
19 Factory and field tests
20 Supply
Appendix A (informative) Correction of measured ventilation losses of hydrogenerators
Appendix B (informative) Correction of measured bearing loss values at different lubricating oil temperatures
Appendix C (Informative) Test Project
Appendix D (Normative) Trial operation and guarantee period
Appendix E (informative) Scope of supply
Appendix F (informative) Spare parts
Appendix G (Informative) Special Tools
Appendix H (Informative) Technical Documents and Drawings

1 Scope

This document specifies the overall technical requirements, product identification, material and component storage, factory and site

Testing and supply requirements, etc.

This document is applicable to three-phase 50Hz/60Hz salient pole synchronous power generation directly connected to the hydraulic turbine and with a rated capacity of 25MVA and above.

machine (hereinafter referred to as turbine generator). Hydro-generators with a rated capacity less than 25MVA shall refer to this standard.

Note. For special provisions on pumped hydro generator motors, see GB/T 20834.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations

For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 755 Ratings and performance of rotating electrical machines

GB/T 2900.25 Electrical terminology for rotating electrical machines

GB/T 8564 Technical Specifications for Installation of Hydrogenerator Sets

GB/T 10069.1 Determination methods and limits of noise of rotating electrical machines Part 1.Determination methods of noise of rotating electrical machines

GB/T 20160 Insulation resistance test of rotating electrical machines

GB/T 20835 Generator stator core magnetization test guidelines

GB/T 22715 Impulse voltage resistance level of rotary AC motor stator formed coils

GB/T 25442 Test methods for determining losses and efficiency of rotating electrical machines (except traction motors)

GB/T 28546 Specifications for packaging, transportation and storage of large and medium-sized hydropower units

GB/T 28570 Technical Guidelines for On-line Monitoring System for Hydrogenerator Unit Status

GB/T 32584 Assessment of mechanical vibration of hydroelectric power plants and energy storage pumping station units

GB/T 34665 Motor coil/winding insulation dielectric loss factor measurement method

GB 50084 Design specifications for automatic sprinkler systems

GB 50193 Design specifications for carbon dioxide fire extinguishing systems

DL/T 507 Start-up test procedures for hydroelectric generator sets

JB/T 7608 Test method and limit value for measuring dielectric loss tangent of high-voltage AC motor coil insulation

JB/T 8439 Anti-corona technical requirements for high-voltage AC motors used in high-altitude areas

NB/T 47004 (all parts) Plate heat exchanger

T/CSEE0094 Technical conditions for the complete set of equipment for grounding the neutral point of the generator through the transformer

IEC 60034-33 Rotating electrical machines Part 33.Synchronous turbine generators (including generator motors) Basic technical requirements (Rotating requirements)

IEC 60287-3-1 Cable current rating calculation Part 3-1.Operating conditions Site operating conditions (Electriccables- […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 44 pages — is available in the English PDF.

Referenced standards

Normative references

IEC 60034 · IEC 60287

Cited by

How to Download GB/T 7894-2023

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.