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PVC insulated and PVC sheathed telephone cables for use in mines

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Scope of application:This product is fit for being laid in fixed placed in mines for the connection of communication trunk lines and junction box and telephones.

ִ�б�׼ Standards implemented: Q/3210HL29-2003

�ͺš����Ƽ�ʹ�÷�Χ Model descriptions and Use scope

�� ��
Model
�� ��
Descriptions
ʹ �� �� Χ
Scope of application
MHVV(HUVV) ú���þ�����ϩ��Ե��ȼ������ϩ���׵绰����
PVC insulated fire retardant PVC sheathed telephone cables for use in mines
����һ�㳡��
General circumstances in mines
MHVVR(HUVVR) ú���þ�����ϩ��Ե��ȼ������ϩ������绰����
PVC insulated fire retardant PVC sheathed soft telephone cables for use in mines
���з��ߺС���������绰�����ӵij���
Where connection between junction box and telephone is required in mines
MHVV22(HUVV22) ú���þ�����ϩ��Ե�ִ���װ��ȼ������ϩ���׵绰����
PVC insulated steel tape armored fire retardant PVC sheathed telephone cables for use in mines
���г���һ���������ѹ���ij���
Where cables are under some impact and pressure in the mine
MHVV32(HUVV32) ú���þ�����ϩ��ԵϸԲ��˿��װ��ȼ������ϩ���׵绰����
PVC insulated fine round steel wire armored fire retardant PVC sheathed telephone cables for use in mines
���д�ֱ�������ܽϴ������ij���
Vertically laid or laid where the cables are under big impact and pull force in mines
MHYV(HUYV) ú���þ���ϩ��Ե��ȼ������ϩ���׵绰����
PE insulated fire retardant PVC sheathed telephone cables for use in mines
����һ�㳡��
General circumstances in mines
MHYVR(HUYVR) ú���þ���ϩ��Ե��ȼ������ϩ������绰����
PE insulated fire retardant PVC sheathed soft telephone cables for use in mines
����һ�㳡��
General circumstances in mines
MHYV22(HUYV22) ú���þ���ϩ��Ե�ִ���װ��ȼ������ϩ���׵绰����
PE insulated steel tape armored fire retardant PVC sheathed telephone cables for use in mines
���г���һ���������ѹ���ij���
Where cables are under some impact and pressure in the mine
MHYV32(HUYV32) ú���þ���ϩ��ԵϸԲ��˿��װ��ȼ������ϩ���׵绰����
PE insulated fine round steel wire armored fire retardant PVC sheathed telephone cables for use in mines
���д�ֱ�������ܽϴ������ij���
Vertically laid or laid where the cables are under big impact and pull force in mines

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IIIustration of cable structure

 

ʹ������ Service characteristics

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Long-term service temperature of the cable conductor
-40��-+50��
���·����¶�
Cable laying temperature
��-10��
+25��ʱ�������ʪ��
Environment relative humidity at 25��
��95%
���µ���С�����뾶
Minimun bending radius
MHVV MHYV MHVVR MHYVR �͵���Ϊ�����⾶��15���������ͺ�Ϊ�⾶��20��
15 times of the cable outer diameter of MHVV MHYV MHVVR MHYVR and 20times for the rest

���¹�� Specifications

�� ��
Model
�� ��
Specifications
����ṹ������/ֱ����mm
Conductor structure(number/diameter)
MHYVR MHVVR 1X2 1/0.28����ͭ�� +6/0.28��������
1/0.28 tinned copper wire +6/0.28 tinned steel wire
MHVV22 MHVV32 MHYV22 MHYV32 2X2-100X2 1/0.5; 1/0.8
MHVV MHYV 1X2-100X2 1/0.5; 1/0.8

������Ҫ�������� Major technical performances

1�� ���µ���ֱ�����輰����˥��

DC resistance of the conductor and Intrinsic attenuation

�� ��
Model
+20�浼��ֱ�����裨�ܦ�/Km��
DC resistance of conductor at 20��
����˥����800Hz����db/Km
Intrinsic attenuation
MHVVR MHYVR
260
4.63
MHVV22 MHVV32 MHYV22 MHYV32 MHVV MHYV
95��0.5mm��; 36.7(0.8mm)
1.32(0.5mm); 0.95(0.8mm)

2������������������ Other major technical performances

�� ��
Serial number
�� Ŀ
Items
�� ��Model:MHVV MHVVR MHVV22 MHVV32
�� ��Model:MHYV MHYVR MHYV22 MHYV32
1
+20����о����ֱ�����裨��/Km��
Line core DC resistance at 20��
���ϱ� See above table
2
���¹���˥������dm/Km��
Cable intrinsic attenuation
���ϱ� See above table
3
+20���Ե���裨��M����Km��
Insulating resistance at 20��
110 ; 40(MHVVR) 3000 ; 110(MHYVR)
4
1min��Ƶ������ѹ����
lmin power frequency alternating current pressure test
о-оcore - core
о-��װ��core - armoring
1000V������
1000V no breakdown
1500V������
1500V no breakdown
5
�������ݣ��ܦ�F/Km��
Service capacity
0.12 0.06
6
������ֱȼ������
Single wire burning test
MT386
7
����ȼ������
Group burning test
����GB/T 18380.3��׼��B���������Ҫ��
Conforms to GB/T18380.3 standard B types group test




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