Fire Resistant Power Cable (Fixed Installed Cable for Coal Mining)

Cables used in harsh environments such as mining need to be durable as well as functional. This fire resistant power cable is a common sight on the cable installation project, and is used typically to carry electricity to mining equipment safely with very little risk of being damaged. The thick insulation of these mining cables protects the conductors within from fire and crushing damage.

The fire resistant cable's reference standard: MT818. 11 ~ 13-2009

Working conditions of fire resistant power cable
1) This maximum working temperature of the conductor 90℃ for XLPE insulation and 70℃ for PVC insulation.
In case of a short (lasting less than 5 seconds) the maximum temperature of the cable conductor shall not be above 250° for XCLPE insulation and 160℃ for PVC insulation
Environment temperature should be no lower than 0℃ when installing the cable;

2) Bending radius allowance of the fire resistant power cable
Single core cable: Unarmored cable 20D; Steel tape armored cable 15D
Multi-Core cable: Unarmored cable 15D; Steel tape armored cable 12D.
Notes: D= practical external diameter of cable.

Type	Description
MV(YJ )V	Insulated PVC sheathed power cable for coal mine
MV(YJ)V22	Insulated steel tape armored PVC sheathed power cable for coal mine
MV(YJ)V32	Insulated thin steel wire armored PVC sheathed power cable for coal mine
MV(YJ)V42	Insulated thick steel wire armored PVC sheathed power cable for coal mine

Rated cross area (mm2)	4	6	10	16	25	35	50
Cu (Ω/km)	4.61	3.08	1.83	1.15	0.727	0.524	0.387
Rated cross area (mm2)	70	95	120	150	185	240	300
Cu (Ω/km)	0.268	0.193	0.153	0.124	0.0991	0.0754	0.0601

Rated Voltage (kV)	3.6/6	6/6 6/10	8.7/10 8.7/15
Test Voltage (kV)	6.23	10.38	15.05
Discharge capacity (pC)	10	10	10

Rated Voltage (kV)	0.6/1	1.8/3	3.6/6 3.6/10	6/6 6/10	8.7/10 8.7/15
Test Voltage (kV)	3.5	6.5	12.5	21	30.5
Test Time (min)	5	5	5	5	5

TableA-1: The power cable current-carrying capacity of 1kV PVC insulates and sheath
Apply the model number: VV VLV;
Limit the term :
Environment temperature : 25°C;
Soil temperature : 25°C;
Soil thermal receptivity: 120°·cm/W

Area (mm2)	The long-term admission current-carrying capacity in air(A)						The long-term admission current-carrying capacity in soil(A)
	Cu			Al			Cu			Al
	1-core	2-core	3/4 core	1-core	2-core	3/4 core	1-core	2-core	3/4core	1-core	2-core	3/4 core
4	41	35	29	31	26	22	56	41	35	43	32	27
6	54	44	38	41	34	29	70	52	44	54	40	34
10	72	60	52	55	46	40	94	69	59	72	53	46
16	97	79	69	74	61	53	124	91	77	95	70	59
25	132	107	93	102	83	72	163	118	101	125	91	78
35	162	124	113	124	95	87	196	139	124	151	107	95
50	204	155	140	157	120	108	241	171	150	185	132	116
70	253	196	175	195	151	135	292	208	184	225	160	141
95	272	238	214	214	182	165	348	257	218	267	191	168
120	356	273	247	276	211	191	392	282	247	305	218	190
150	410	315	293	316	242	225	447	322	283	343	248	218
185	465	356	332	358	274	257	500	360	318	385	278	247
240	552	/	393	425	/	306	582	/	368	447	/	284
300	636	/	452	490	/	352	660	/	417	500	/	317
400	757	/	/	589	/	/	773	/	/	593	/	/
500	886	/	/	680	/	/	876	/	/	670	/	/

TableA-2: The power cable current-carrying capacity of 1kV & PVC insulates &Steel potassium & PVC sheath
Apply the model number: VV22 VLV 22 VV32 VLV32 VV42 VLV42
Limit the term :
Environment temperature : 25°C;
Soil temperature : 25°C;
Soil thermal receptivity: 120°·cm/W

Conductor Area (mm2)	The long-term admission current-carrying capacity in air(A)						The long-term admission current-carrying capacity in soil(A)
	Copper core cable			Aluminum core cable			Copper core cable			Aluminum core cable
	2-core	3-core	4-core	2-core	3-core	4-core	2-core	3-core	4-core	2-core	3-core	4-core
4	36	31	30	27	23	23	41	35	34	32	27	26
6	45	39	39	35	30	30	52	45	44	40	34	34
10	60	52	52	46	40	40	67	59	58	52	46	45
16	81	71	70	62	54	54	90	78	77	70	60	59
25	106	96	94	81	73	73	118	103	100	91	79	77
35	128	114	119	99	88	92	140	123	126	108	94	97
50	160	144	149	123	111	115	171	151	154	132	116	118
70	197	179	184	152	138	141	207	192	195	160	142	142
95	240	217	226	185	167	174	248	216	221	191	166	171
120	278	252	260	215	194	201	284	247	252	219	190	194
150	319	292	301	246	225	231	320	282	384	246	216	218
185	356	333	345	278	257	266	357	315	319	280	242	246
240		392	406		305	314		364	370		295	300
300		450	466		351	360		433	440		340	348

TableA-3: The power cable current-carrying capacity of 1kV & XLPE insulates& PVC sheath
Apply the model number: YJV YJLV
Limit the term :
Environment temperature : 40°C;
Soil temperature : 25°C;
Soil thermal receptivity: 200°C·cm/W

Conductor Area (mm2)	The long-term admission current-carrying capacity in air(A)				The long-term admission current-carrying capacity in soil(A)
	Copper core cable		Aluminum core cable		Copper core cable		Aluminum core cable
	1-core	3/4 core	1-core	3/4 core	1-core	3/4 core	1-core	3/4 core
2.5	34	32	27	25	36	32	27	25
4	44	41	35	32	47	41	35	32
6	56	52	45	42	59	52	46	42
10	77	70	60	53	78	69	59	53
16	100	91	78	70	102	90	77	71
25	132	118	102	91	130	117	104	91
35	164	150	127	114	169	143	117	113
50	196	182	152	146	187	169	139	134
70	251	228	195	178	226	208	174	165
95	305	273	236	214	269	247	208	195
120	351	314	272	246	300	282	239	221
150	401	360	311	278	339	321	269	247
185	461	410	359	319	382	356	300	278
240	546	483	424	378	435	408	348	321
300	611	552	474	419	495	469	391	365
400	716	/	546	/	574	/	456	/

TableA-4: The power cable current-carrying capacity of 1kV & XLPE insulates& Steel potassium & PVC sheath
Apply the model number: YJV22, YJLV22, YJV32, YJLV32,YJV42, YJLV42
Limit the term :
Environment temperature : 40°C;
Soil temperature : 25°C;
Soil thermal receptivity: 200°C·cm/W

Conductor Area (mm2)	The long-term admission current-carrying capacity in air(A)		The long-term admission current-carrying capacity in soil(A)
	Copper core cable	Aluminum core cable	Copper core cable	Aluminum core cable
	3/4 core	3/4core	3/4core	3/4core
4	41	32	41	32
6	52	42	52	42
10	70	53	69	53
16	91	70	90	71
25	118	91	117	91
35	150	114	143	113
50	182	146	169	134
70	228	178	208	165
95	273	214	247	195
120	314	246	282	221
150	360	278	321	247
185	410	319	356	278
240	483	378	408	321
300	552	419	469	365

TableA-5: The power cable current-carrying capacity of 10~35kV & XLPE insulates
Apply the model number: YJV YJLV
Limit the term :
Environment temperature : 40°C;
Soil temperature : 25°C;
Soil thermal receptivity: 200°C·cm/W °C

Area (mm2)	The long-term admission current-carrying capacity in air(A)				The long-term admission current-carrying capacity in soil(A)
	10kV 3-core		35kV 1-core		10kV 3-core		35kV 1-core
	Cu	Al	Cu	Al	Cu	Al	Cu	Al
25	129	100	/	/	116	90	/	/
35	159	123	/	/	135	105	/	/
50	182	141	205	159	155	120	175	135
70	223	173	253	196	196	152	222	172
95	276	214	311	241	235	182	265	205
120	317	246	354	275	264	205	295	229
150	359	278	396	307	283	219	312	242
185	413	320	456	354	319	247	352	273
240	481	373	533	413	377	292	418	324
300	552	428	609	472	423	328	467	362
400	646	501	711	551	482	374	530	411
500	740	574	815	631	547	424	602	467

TableA-6: The current-carrying capacity is on 750V or lower PVC insulate power wire(cable)
Apply the model number: BV BLV BVV BLVV
Limit the term : Environment temperature 25°C at air

Area (mm2)	2-core		3-core		4-core
	Cu	Al	Cu	Al	Cu	Al
1.0	12	/	11	/	10	/
1.5	16	/	15	/	13	/
2.5	24	18	21	16	19	14
4	31	24	28	22	25	19
6	41	31	36	27	32	25
10	56	42	49	38	44	33
16	72	55	65	49	57	44
25	95	73	85	65	75	57
35	120	90	105	80	93	70
50	150	114	132	102	117	90
70	185	145	167	130	148	115
95	230	175	205	158	185	140
120	270	200	240	180	215	160
150	305	230	275	207	250	185
185	355	265	310	235	280	212

TableA-7: Current-carrying capacity is on general-purpose soft rubber sheath cable
Apply the model number: YQ, YQW, YZ, YZW, YC, YCW
Limit the term : Environment temperature 25°C at air

Area(mm2)	cable core number
	1-core	2-core	3-core	4-core
1.0	19	17	14	13
1.5	24	21	18	18
2.5	37	30	25	25
4	47	39	34	34
6	52	51	43	44
10	75	74	63	63
16	112	98	84	84
25	148	135	115	116
35	183	167	142	143
50	226	208	176	177
70	289	259	224	224
95	353	318	273	273
120	415	371	316	316

Table A-8: Current-carrying capacity is onrubber soft cables for mining use
Apply the model number: MZ(E), MZP(E), MC, MCP, MCPJ, MCPT, MCPTJ, MY(E), MYP(E), UYPT(E),MYPTJ(E)
Limit the term : Environment temperature 25°C in air

Lord-core area (mm2)	1.14kV or lower cable	6kV or lower cable
2.5	26	/
4	36	/
6	46	53
10	64	72
16	85	94
25	113	121
35	138	148
50	173	183
70	215	225
95	260	270
120	308	/