Description:
NH represents fire resistance, which is the addition of a layer of mica tape between PVC insulation and copper conductors to separate the flame from the conductor during external fire. It can provide normal power supply for a certain period of time, but its insulation material is the same as ordinary BV wires; And ZR represents flame retardancy, which is the addition of flame retardant fuel to PVC insulation to prevent external insulation from delaying combustion and automatically extinguish after the fire source is eliminated. The principle is different, but the NH level is still higher. Fire-resistant copper core PVC insulated twisted flexible cable fire alarm cable,Fire engineering, broadcasting, lamp head line.
1. Applications
NH-RVS wire is called copper-cored PVC insulated stranded connection use soft wire , pair twisted multi-stranded soft wire, referred to as twisted pair cable, commonly known as "flower wire" in China. At present, this kind of wire is mostly used in Fire engineering system, broadcasting, lamp head line
2. Standards
NH-RVS cable implements the standards GB/19666, And it can also be made to comply with CE, SGS, SAA PSE standards, etc. In addition, we can design and manufacture the products as the requirements of customers.
3. Structure
1. Suitable to be installed in electrical power transmission and distribution lines rated voltage 300V or lower.
2. conductor's rated working temperature:≤70
3.Short-circuit temperature160/5sec
4. Cable laying environment≥0
5. Cable laying, bend radius≥10 times cable O.D.
4. Feature
1. NH-Rvs cable is mostly used for the detector circuit of the fire alarm automatic alarm system.
2. Suitable for household appliances, small power tools, instrumentation, and power lighting. A double white core is used for direct connection to the lamp line; a red and blue core is used for fire protection, alarm, etc.; a red and white core is used for broadcasting and telephone lines; a red and black core is used for broadcasting lines.
3. NH-Rvs cable is used to connect the amplifier and audio equipment, and the broadcast system transmits the audio signal amplified by the power amplifier.
NH-RVS Parameters
| Core No.×nominal sectional area |
Single wire diameter(mm) |
Insulation thickness (mm) |
Outer diameter(mm) |
20 ºCmaximum conductor resistance(Ω/km) |
80 ºCinsulation minimum resistance(mΩ/km) |
| |
|
|
|
Annealed copper |
Tinned copper |
|
| 2×0.5 |
0.16 |
0.8 |
6 |
39 |
40.1 |
0.016 |
| 2×0.75 |
0.16 |
0.8 |
6.2 |
26 |
26.7 |
0.014 |
| 2×1.0 |
0.16 |
0.8 |
6.6 |
19.5 |
20 |
0.011 |
| 2×1.5 |
0.16 |
0.8 |
7.2 |
13.3 |
13.7 |
0.01 |
| 2×2.5 |
0.16 |
0.8 |
8.2 |
7.98 |
8.21 |
0.009 |
| 2×4 |
0.16 |
0.8 |
9.2 |
4.95 |
5.09 |
0.007 |
| 2×6 |
0.21 |
1 |
10.6 |
3.3 |
3.39 |
0.006 |
PRODUCTS DISPLAY
FACTORY DISPLAY
Welcome to Qingdao Dadi Energy Co., Ltd. Our factory was established in 2017,located in Qingdao, China, specializing in manufacturing and selling wires and cables. We can offer customized service of high and low voltage cross-linked cables, long-life wires and cables, PVC insulated power cables, bare wires, sheathed wires, control cables, shielded cables, halogen-free low smoke wires and cables, rubber sheathed cables, and various types of flame retardant and fire-resistant cables and mineral insulated cables. Our wires and cables have been certified in 28 European countries and exported to over 100 countries and regions, comply with CCC and ISO9001 certificates. We have remained true to our core principles of customer service, on time delivery, uncompromised quality and exceptional value at competitive prices. Quality assurance, welcome to consult to negotiate!
Production process
Quality inspection
Packaging methods
Q1:Who you are? What are your company's Main Products?
This is Qingdao dadi energy co., ltd. Our factory was established in 2017,located in Qingdao, China, specializing in manufacturing and selling full series of wires and cables, such as: rubber sheathed flexible cable, sheathed cable, control cable, power cable, aerial insulated cable, aluminum stranded wires and steel core aluminum stranded wires, PVC insulated non-sheathed (soft) wire and cable, special cable.We have three independent production workshops with a building area of over 25000 square meters and an annual production capacity of up to 2 billion dollars.
Q2: How can I get the Quotation of the products?
Pls send your demand or specification to us or just E-mail our trade Manager, We'll reply to you within 2 hours in the Working days.
Q3: What does your company do regarding Quality Control?
Firstly, All raw materials were selected are the highest quality level. Secondly,Professional and skillful workers care for every detail in handling the production. Thirdly, Quality Control Department is specially responsible for quality checking in each process and final check before shipping to our customers.
Q4: I didn't find my needed model in this page. Do you provide OEM Project Service?
Surely , our factory could manufacturing more than10000 models, OEM & ODM order is warmly welcome and we can you put your brand name, (logo) on these products. What's more, our R&D team will give you professional suggestions.
Q5: How could I get the Sample?
We are honored to offer you samples if we have it in stock, usually it is not free , but we will return it to your on first time mass order .but you need to pay the freight. If you have a courier account or forwarder in China, we can send it your courier to collect samples.
Q6: How long is the Delivery Time?
For Sample: 1-3 working days ; For small orders: 3-10 working days; For mass orders: 10-18 working days. It is better to communicate with us if you are interested to place an order. It depends on your order quantity.
Q7: What are your payment terms?
Our payment term is usually T/T 30% in advanced, the balance before picking up the goods or L/C at sight.
Q8: What is your Warranty? How about MOQ ?
All the products will have 24 months Warranty,Our company has MOQ requirement, but we also accept small quantity. We would love to grow up with every customers. Please feel free to contact us and send us your inquiry.
Audited Supplier 
){kind=link}