HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

QC/T 476-2025 PDF English

US$275.00 · In stock · Download in 9 seconds
QC/T 476-2025: Requirement and test method for rain proof performance of bus
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

QC/T 476: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
QC/T 476-2025English275 Add to Cart 0-9 seconds. Auto-delivery Requirement and test method for rain proof performance of bus Valid
QC/T 476-2007English70 Add to Cart 0-9 seconds. Auto-delivery Rain proof performance limit and test method for bus Valid
QC/T 476-1999English199 Add to Cart 2 days Rain proof performance limit for buses Obsolete

Excerpted PDFs (Download full copy in 9 seconds upon purchase)

PDF Preview: QC/T 476-2025
      

QC/T 476-2025: Requirement and test method for rain proof performance of bus

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/QCT476-2025
QC AUTOMOTIVE INDUSTRY STANDARD ICS 43.080.20 CCS T 42 Replacing QC/T 476-2007 Requirement and Test Method for Rain Proof Performance of Bus Issued on: MAY 9, 2025 Implemented on: NOVEMBER 1, 2025 Issued by. Ministry of Industry and Information Technology of the People’s Republic of China

Table of Contents

Foreword... 3 1 Scope... 5 2 Normative References... 5 3 Terms and Definitions... 5 4 Performance Requirements... 6 5 Test Conditions... 7 5.1 Test vehicle... 7 5.2 Test equipment... 7 6 Test Methods... 7 6.1 Raining simulation test... 7 6.2 Vehicle washing simulation test... 8 6.3 Driving inspection... 9 6.4 Test record... 9 Appendix A (Informative) Raining Simulation Device... 10 Appendix B (Normative) Equipment Verification... 12 Appendix C (Informative) Raining Test Record Sheet... 15 Requirement and Test Method for Rain Proof Performance of Bus

1 Scope

This Document specifies the performance requirements, test conditions, and test methods for the rainproof sealing of buses. This Document applies to M2 and M3 buses; other vehicles shall be implemented as a reference.

2 Normative References

The provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document. GB/T 3730.1 Terms and definitions of motor vehicles, trailers and combination vehicle - Part 1.Types GB/T 4208-2017 Degrees of protection provided by enclosure (IP code) GB/T 4780 Terms for motor vehicle body GB/T 15089 Classification of power-driven vehicles and trailers GB 18384-2020 Electric vehicles safety requirements

3 Terms and Definitions

For the purposes of this Document, the terms and definitions given in GB/T 3730.1, GB/T 4780, GB/T 15089 and the following apply. 3.1 Rain proof performance for bus The ability of a bus to close all doors, windows and opening covers to prevent rainwater from entering the passenger compartment, luggage compartment and other assemblies and components when being sprayed with rainwater. 3.2 Seep The phenomenon that water slowly emerges from the cracks and spreads around along the inner surface of the vehicle body, but does not fall. 3.3 Leakage The phenomenon that water appears from cracks, leaves, or falls or flows along the inner surface of the vehicle body. NOTE. "leakage" includes "drop" and "flow". 3.3.1 Drop The phenomenon that water appears from the cracks, leaves or falls intermittently along the inner surface of the vehicle body. 3.3.2 Flow The phenomenon that water appears from the cracks, leaves or falls or flows continuously along the inner mark of the vehicle body. 3.4 Average raining intensity The ratio of the total volume of water sprayed by each nozzle within a given shower surface per unit time to the total shower area covered by each nozzle within that shower surface. NOTE. Average raining intensity is measured in millimeters per minute (mm/min).

4 Performance Requirements

4.1 During the rain simulation test, no water leakage shall occur in the passenger compartment, luggage compartment, or equipment compartment. For buses with a length of 9 m or less, water shall not seep into the passenger compartment at more than 3 locations; for buses with a length of more than 9 m, water shall not seep into the passenger compartment at more than 5 locations. 4.2 During the vehicle washing simulation test, no water leakage shall occur in the passenger compartment. At the end of the test, no water shall accumulate on the floor of the luggage compartment and equipment compartment, or in the exterior lighting and signaling devices. 4.3 During the driving inspection, no water leakage shall occur in the passenger compartment, and no electrical failures in the bus's electrical systems shall occur due to rainproof sealing. For pure electric buses and hybrid electric buses, the insulation resistance of the entire vehicle in a wet state shall be greater than 1 MΩ after the vehicle washing simulation test.

5 Test Conditions

5.1 Test vehicle The test vehicle must meet the manufacturer's specified technical requirements. Parts within the vehicle compartment that do not affect the test results may be removed to facilitate testing and inspection. 5.2 Test equipment 5.2.1 Raining simulation device 5.2.1.1 The raining area shall be larger than the vertical projection area of the vehicle under test and shall expose all tested areas, including the front, sides, rear, top, and bottom, to rain evenly. 5.2.1.2 The average raining intensity on each rain-exposed surface (hereinafter referred to as "raining intensity") shall be independently adjustable and controlled to ensure a raining intensity of 12 mm/min ± 1 mm/min on the front and 8 mm/min ± 1 mm/min on the sides, rear, top, and bottom of the vehicle. 5.2.1.3 The structural layout of the raining simulation device is provided in Appendix A. 5.2.2 Vehicle washing simulation equipment IPX5 hose nozzles specified in GB/T 4208-2017 shall be used. The spray water flow rate during simulating vehicle washing shall be controlled within 12.5 L/min ± 0.5 L/min. 5.2.3 Equipment verification The nozzles and pipeline of the raining simulation device and vehicle washing simulation device shall be cleaned regularly and verified in accordance with the provisions in Appendix B.

6 Test Methods

6.1 Raining simulation test 6.1.1 Before the test begins, confirm that the electrical system is fault-free and the vehicle's historical fault codes have been cleared. 6.1.2 Park the test vehicle in a designated location within the rain-proof area. Set the parking brake at the brake state, and the engine to idle (or powered on for electric buses). Start the air conditioning fan in external circulation mode and adjust the fan speed to the highest setting. The test personnel enter the passenger compartment and close all doors, windows, and opening covers. 6.1.3 Start the raining simulation device and adjust the rainfall intensity on each raining surface to the conditions specified in 5.2.1.2 using the flow control valve. After the rain stabilizes, start the wipers to the appropriate position; turn on the high beam and fog lights, and begin the test. The test duration is 15 min. 6.1.4 During the test, observe and record any leakage (e.g., seep, drop, or flow) in the passenger compartment, luggage compartment, and equipment compartment. Water accumulation along the passenger door seals and gaps at the lower edge of the passenger door onto the vehicle floor and steps during the test shall not be counted as leakage. For leakage in the luggage compartment and equipment compartment, after the rain stops, wipe away any accumulated water at the hatch joints before opening the hatch for inspection. Alternatively, use an endoscope or other auxiliary tool to conduct an inspection during the simulated rain. 6.2 Vehicle washing simulation test 6.2.1 A vehicle washing simulation test (any water stains or accumulated water in the passenger compartment and luggage compartment shall be wiped clean before the test) shall be performed as soon as possible after the raining simulation test. 6.2.2 Turn off the engine (for electric buses, power off), air conditioning fan, lighting device, and wipers. 6.2.3 Start the vehicle washing simulation device, and adjust the water flow rate to the setting specified in 5.2.2.Aim the hose nozzle at all doors (excluding sliding, folding, and inward- swinging doors), windows, opening covers, and joints between various components of the bus, spraying twice in a reciprocating motion. During spraying, the nozzle outlet shall be 300 mm to 500 mm from the joint, with the nozzle axis approximately perpendicular to the plane of the vehicle body along which the joint line is located. The nozzle movement speed shall be 0.1 m/s to 0.5 m/s. 6.2.4 During the test, observe and record any leakage (e.g., seep, drop, and flow) in the passenger compartment, luggage compartment, and equipment compartment. During the test, water that accumulates along the passenger door seals and gaps at the lower edge of the passenger door and flows into the interior floor and steps shall not be counted as leakage. For leakage in the luggage compartment and equipment compartment, wipe away any accumulated water from the hatch joints before opening the hatch for inspection when the vehicle washing simulation stops. Alternatively, use an endoscope or other auxiliary tool during the simulated vehicle washing. 6.2.5 After the vehicle washing simulation test, inspect whether the lighting device accumulates water. 6.2.6 For pure electric buses and hybrid electric buses, conduct entire vehicle insulation resistance measurements in accordance with 6.2.1 of GB 18384-2020 within 30 min of the vehicle washing simulation test. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

Tips & Frequently Asked Questions

Question 1: How long will the true-PDF of English version of QC/T 476-2025 be delivered?

Answer: The full copy PDF of English version of QC/T 476-2025 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.

Question 2: Can I share the purchased PDF of QC/T 476-2025_English with my colleagues?

Answer: Yes. The purchased PDF of QC/T 476-2025_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. www.ChineseStandard.us -- QC/T 476-2025 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.

Question 5: Should I purchase the latest version QC/T 476-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version QC/T 476-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

How to buy and download a true PDF of English version of QC/T 476-2025?

A step-by-step guide to download PDF of QC/T 476-2025_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "QC/T 476-2025".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3    Steps 4~6    Step 7    Step 8    Step 9