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CHZ Lighting - LED Street Light Manufacturer and LED Flood Light Factory Since 2013


Faqs
1
What is high‑low‑temperature cycling test for LED lights?
High‑low‑temperature cycle test repeatedly switches working temperature between low‑temperature and high‑temperature condition, verifying driver, sealing and material reliability under extreme climate change. [[Link‑Blog‑lab‑testing]] Every new lamp model must complete this lab validation.
2
What is the difference between salt‑spray test hours for standard and anti‑salt‑spray version?
Standard version passes 500‑hour neutral salt‑spray test; upgraded anti‑salt‑spray version can reach 1000 hours or above for coastal high‑salt‑fog environment. [[Link‑Blog‑salt‑corrosion‑solution]] We will select suitable salt‑spray grade according to your project location.
3
What is junction temperature, and why is it important for LED lifespan?
Junction temperature is the working temperature of LED chip. Excessively high junction temperature will accelerate light decay and shorten LED working lifetime. Good heat‑sink keeps junction temperature within safe range. [[Link‑Blog‑led‑heat‑dissipation]] Thermal design is one core advantage of our engineering‑grade luminaires.
4
How do you test heat‑dissipation performance for LED outdoor lamps?
We test LED junction temperature under full‑load working status in laboratory. Junction‑temperature data is the key indicator to evaluate heat‑sink performance. [[Link‑Blog‑lab‑testing]] We can share thermal‑test report for large‑project evaluation.
5
Why total lumen output is not the only criterion to choose outdoor lamp?
Total lumen only shows total light quantity; beam pattern, glare control and light utilization rate decide real‑site effect. High‑lumen lamp may still deliver poor illumination with bad optical design. [[Link‑Photometric‑service]] Rely on DIALux simulation instead of only comparing lumen parameters.
6
Can you modify beam angle by changing lens for existing lamp model?
Yes, for most modular lamp series, we can swap optical lens to realize different beam angles without changing lamp housing structure. Tell target beam‑angle requirement for feasibility assessment.
7
What is UGR glare index and why it matters for outdoor lighting?
UGR (Unified Glare Rating) quantifies human‑eye discomfort from glare. Low‑UGR optical design is critical for road, sports venue and pedestrian‑zone lighting. [[Link‑Blog‑sports‑lighting‑design]] Our DIALux report includes UGR / GR glare index result.
8
What is light‑output‑maintenance L80 vs L70 definition for LED lamps?
L70 means lumen retains 70% of initial brightness; L80 retains 80%. Higher index represents better long‑term optical performance for municipal projects. [[Link‑Blog‑lumen‑depreciation]] We provide LM‑80 / TM‑21 report for engineering orders.
9
What is optical lens material for CHZ outdoor LED lamps?
We adopt high‑transmittance tempered glass lens or high‑quality PC optical lens according to product series, resisting UV aging and light transmittance decline. [[Link‑Street‑light‑product]] We can provide material datasheet for your review.
10
What is THD value of your LED lamp driver?
THD<20% for standard engineering driver. Lower THD version can be customized for special‑strict public‑utility tender projects. Notify us if you need low‑THD driver configuration.
11
What is power factor requirement for outdoor LED lighting project?
Our engineering‑grade driver reaches PF>0.9, complying with most public‑project grid‑access requirements. Some regional tender documents specify strict PF threshold. Share your tender technical requirement for us to match.
12
Can LED drivers be replaced on‑site after lamp installation?
Most of our outdoor lamps adopt modular‑design driver structure, supporting on‑site driver replacement for convenient maintenance. Individual compact integrated model cannot be disassembled. We will inform you maintainability of selected lamp model.

Shanghai CHZ Lighting Co.,Ltd

Founded in 2013, it is a high-tech enterprise engaged in the research and development and production of LED lighting products.

Contact Us

Contact Person: Jolina
Tel: +86 2169898169
E-mail: Sales@chz-lighting.com

WHATSAPP: +86 159 2122 3752

Wechat: +86 159 2122 3752

SKYPE: jolina.li

Add: No.999, Shunda Road,Shanghai, China
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