Copper core mineral insulated flexible fire proof cable for wiring rated voltage up to and including 0.6/1kV

Copper core mineral insulated flexible fire proof cable for wiring rated voltage up to and including 0.6/1kV

BBTRZ type copper core mineralinsulated flexible fireproof cable for wiring rated voltage up to and including 0.6/lkV is a newproduct which is developed and designed imdependently by Anhui Huayu Cable Group Co.ltd during about two vears, Compared with theordinary fire-retardant and fre-retardant cables.it has better environmental performance, higher flame retardant and fre-retardant grade.Finished cable should pass fire resistant test specifed in GB/T19216.21, exposure to fire temperature of 950-1000 ℃ for 180 minutes.At the same time, for the cable with diameter equal or less than 20mm, the circuit should keep integrity after in sequence test of the fireresistance alone, resistance to fre with water, and resistance to fie with mechanical shock specifed in chapter 11 ofBS 6387:1994 onthe same sample: for the cable with diameter more than 20mm, should conform to circuit integrity performance requirements specifed inBS8491:2008 and pass grade A fame retardant property test
The cables are widely used in following occasions.
1. Power supply of general lighting, emergency lighting, fire alarm circuit for important uban buildings and key areas, such as highrise building, TV tower, airport terminal, subway, light rail, tunnel, etc.
2. Power supply of equipments and lighting system in densely populated buildings, such as shopping mal, hotel., hospital, conferenccenter, sports center, theater, library, museum, data processing center, etc.
3. Power supply of equipments and lighting system for parking lots of vehicles, culhural relics and explosive occasions, such asparking lot, underground garage, civil defense, scenic spots and historical sites, petrochemical industry, petroleum platform, iron andsteel metallurgy, power station, nuclear power station, oil depot, ammunition depot, mndustry and mming, etc.

This product contains only a small amount of orgamic material which has properties of high fame retardant (grade A), low smnoke,halogen free and fre resistant, on the basis of imheriting the high freproof property of BTTZ series mineral insulated cable, removethe constraint of metal sheath, and overcome the electrical defects of metal sheath cables such as capacitive leakage from electricaperformance. At the same time, the special structural design has greatly improved the cable’s withstand voltage grade, imsulationresistance and bending performance. Operation is very energy saving which can produce continuous multi-core cable with large crosssection and long length. The installation also revert to traditional cable installation techmology, which make the construction andmantenance sumple and comprehensive cost greatly reduced. On the basis of imheriting the high fire resistance charactenistics of BTT2series mineral insulated cables, the metal jacket is unbound and the electrical defects of metal insulated cables such as capacitive leakageare overcome.
The advantages include:
1. Without metal anmor and metal sheath, the structure is similar to ordinary cable, with good bending perfommance
2.Less joints, simple construction, high reliability and greatly reduced input cost.3. Multi-core cable can produce 240~300mm’., overcoming the deficiency of rigid BTTZ above 25mm” only produce single corecable.
4. The cable can be recycled. In case of circuit modification and adiustment, the cable can be removed and reused

1. Rated voltage
Cable rated voltage U,U(..) should be 0.6/1(1.2)kV
2. Applicable standard
GB/T12706.1 Power cables with extruded imsulation and their accessories for rated voltages from 1 kV (U =1.2 kV) up to 30 kV (U,
40 5kV)Q/WHY89-2018 Copper core mineral imsulated fireproof flexible cable for winmg rated voltage up to and imcluding 0.6/lkVBS6387:1994 or BS8491:2008 Performance requirements for cable maintaining cireuit integrity in fiame condifion
3. Rated operating temperatue of conduetor
Maximum rated operating femperature of cable conductor should be 90’c, and withstand long-ferm operatimg temperature of 125c.When short circuit (the longest duration of no more than $ seconds), maximum temperature of cable conductor should be no more than250℃
4. Ambient temperatie when laying
The ambient temperature should be not less than 0℃ when cable laying, otherwise preheating prior
5. Withstand voltage test of fnished cable
Withstand voltage test of finished cable rated voltage up to and ineluding 0.6/1kV should comply with GB/T 12706.1-2008, andwithstand a.c. 35kV power fequency voltage test for 5min without breakdown.
6. Flexibility
Without armor and metal sheath, cable structure is similar to ordinary cable, and fexible as ordinary cable.
7. Good safety
The cable should be supply power normally in fame, starting fire extinguishing equipments, reducing fire loss, and be relable forpersonal safety. Longer manufacturing lengths reduce the risk of intermediate ioints
8. Convenient installation
Cable installation joints should be few and simple construction which can improve reliability and reduce input cost.
9. Product accessorles
Braneh box.’T temminal, penetrated clip, brass nose.
10. lnstallation and laying
1 ) lnstallation condition: it is recommended to adopt grille cable tray which can adapt to almost any laying method;
2) Installation techmology: no special connectors are required. Refer to the installation fechnology of ordinary cables, the branchconneetions should be provided by the manufacturer.
3) Precautions: when the cable is exposed, adopt cable supports, hooks or metal lifing ropes ete. along the fiull length
Maximumn span of cable tray should meet the following reguirements:
A. Meet the bearing eapacity of the supporting parts and should not damage cable outer sheath and cable core,
B. Enable cables to be properly configured with each other,
C. Adapt to the lavout requirements under working condition
D. Ordinary suppots (anm supports) for directly supporting cables, the allowable span of the hanger should confonm to the specified values in table 1.

Cable Outer Dia. mm	Laying Method
	Horizontal	Vertical
D≤20	400	1000
20<D≤30	600	1200
30<D≤50	800	1500
D>50	1000	2500

11. Allowed bending radius

Cable Outer Dia. mm	D≤12	12<D≤20	20<D≤50
Cable allowed bending radius (mm )	6D	10D	15D

Type	Rated Voltage	Product Description	Application Scope and envirorment
BTTRZ	0.6/1kv	Copper core inorganic mineral insulatedcorugated aluminum sheathed cable for wiring	Power supply for general lighting, cmergencylighting, fre alarm cireuit in eritical or key area, forequipments and lighting systems which requiredhigh fireproof grade in heavily populated buildingssuch as subway, hospital, warehouse etc

Type	Rated Voltage	cores no.	Nominal cross section mm2
BTTRZ	0.6/1kv	1	1~630
		2,3,4,3+1	1.5~300
		3+2,4+1,5	2.5~240