NH-VV,NH-VV22 PVC insulated fire-resistant power cablesDetailed product description：

Execution standard: GB12706-2002 standard

Purpose:
NH-VV and NH-VV22 PVC insulated fire-resistant power cables are suitable for use as transmission and distribution lines in high-rise buildings, subways, power stations, theaters, and other important places with AC rated voltage of 0.6/1kv and below. In the event of a fire, the cable can continue to operate for a certain period of time in the event of a fire. It can operate normally for 180 minutes in flame combustion at 750-800 ℃, and has the functions of fire safety and firefighting rescue.

Usage characteristics:
(1) Operating temperature: The maximum operating temperature of the cable conductor is 70 ℃, and the ambient temperature during installation should not be lower than 0 ℃.
(2) Allowable bending radius: For unarmored cables, it shall not be less than 15 times the cable diameter, and for armored cables, it shall not be less than 12 times the cable outer diameter.

Product Parameters:

model	Number of cores	Nominal cross-section of conductor mmtwo	The insulation resistance constant at 70 ℃ shall not be less than M Ω· km	AC 50Hz withstand voltage test	Fire resistance characteristics
NH-VV	one	1.5～300	zero point zero three seven	3.5KV/5min	Through GB/T19216.21-2003 Combustion Test
NH-VV22		10~300
NH-VV	two	1.5～185
NH-VV22		4~185
NH-VV	3. 4, 5	1.5～300
NH-VV22		2.5～300
NH-VV	3+1, 3+2, 4+1	2.5～300
NH-VV22		4~300

NH-VV, NH-VV22 PVC insulated fire-resistant power cable