Electrical scheme_Tellhow Technology (Shenzhen) Power Technology Co., Ltd.

Commonly used power meter

Energy cloud +

Transformer capacity	Typical design transformation ratio 10kV (high voltage)	Typical design transformation ratio 0.4kV (low voltage)
50 kVA	/	100/5
80 kVA	/	150/5
100 kVA	10/5	200/5
125 kVA	10/5	200/5
160 kVA	15/5	300/5
200 kVA	15/5	400/5
250 kVA	20/5	400/5
315 kVA	30/5	500/5
400 kVA	30/5	750/5
500 kVA	40/5	1000/5
630 kVA	50/5	1000/5
800 kVA	75/5	1500/5
1000 kVA	75/5	2000/5
1250 kVA	100/5	2500/5
1600 kVA	150/5	3000/5
2000 kVA	150/5	4000/5
3000 kVA	200/5	/
4000 kVA	300/5	/
5000 kVA	400/5	/
6000 kVA	400/5	/
7000 kVA	500/5	/
8000 kVA	600/5	/
Accuracy class: 0.2S

1. Configuration table of 10kV high voltage current transformer and low voltage current transformer +

Terminal model	Specification
3.1	25-50mm2
3.2	70-120mm2
3.3	150-240mm2
3.4	300-400mm2
NLS	Indoor cold shrink terminal
WLS	Outdoor cold shrink terminal
JLS	Cable shrinkage center
NSY	Indoor heat shrink terminal
WSY	Outdoor heat shrinkable terminal
JSY	Cable heat shrink
SY	Heat shrink terminal
E.g: NSY-10/3.1	E.g: SY-1/5.1	E.g: JLS -10/3.4
10kV heat shrink outdoor terminal	1kV heat shrink five-finger terminal	10kV cable cold shrink intermediate joint

2. The cable accessory model corresponds to the cable specification +

A type (DT) national standard copper nose technical parameters
Type A	Screw holes	Board width	Plate thickness	Tube inner diameter	Tube outer diameter	Threading depth	Length	Weight
Specification	Φ	b	S	d	D	L1	L	Gram G
DT-10	8.5	16	2.3	5.2	9	30	63	22
DT-16	8.5	16	2.5	6.2	10	32	66	27
DT-25	8.5	18	2.8	7.2	11	35	70	32
DT-35	10.5	20.5	3	8.5	12	37	78	41
DT-50	10.5	23	3.5	9.7	14	41	85	62
DT-70	12.5	26	3.8	11.5	16	45	93	82
DT-95	12.5	28	4.5	13.5	18	49	104	115
DT-120	14.5	30	5	15.1	20	51	112	146
DT-150	14.5	34	5.4	16.5	22	54	117	190
DT-185	17	37	5.8	18.5	25	58	125	252
DT-240	17	40	6.5	20.7	27	60	135	320
DT-300	21	46	8	23.2	30	68	155	461
DT-400	21	50	8	26.2	34	74	165	632
DT-500	21	60	8	29.5	38	75	190	985
DT-630	Nonporous	78	10	34.5	45	85	220	1700
B-type (DT) non-standard copper nose technical parameters
Type B	Screw holes	Board width	Plate thickness	Tube inner diameter	Tube outer diameter	Threading depth	Length	Weight
Specification	Φ	b	S	d	D	L1	L	Gram G
DT-10	8.5	14.5	1.8	5.2	8	28	58	15
DT-16	8.5	14.5	2	6.2	9	30	60	17
DT-25	8.5	16	2.4	7.2	10	30	65	23
DT-35	10.5	18	2.6	8.5	11	32	70	27
DT-50	10.5	20.5	3	9,7	13	35	75	43
DT-70	12.5	23	3.1	11.5	15	40	85	57
DT-95	12.5	26	3.4	13.5	17	41	91	77
DT-120	14.5	28	3.7	15.1	19	44	96	100
DT-150	14.5	30	4	16.5	21	46	100	126
DT-185	17	33	4.2	18.5	24	50	110	173
DT-240	17	35	4.5	20.7	26	55	120	212
DT-300	21	42	5.5	23.2	29	62	138	321
DT-400	21	50	8	26.2	34	74	163	576
DT-500	21	55	8	29.5	38	73	175	890
DT-630	21	60	10	34.5	45	80	205	1350

3. Technical parameters of DT copper nose (there is a big gap between national standard and non-stan +

A-type (DTL) national standard copper-aluminum nose technical explanation
Type A	Screw holes	Board width	Plate thickness	Tube inner diameter	Tube outer diameter	Threading depth	Length
Specification	Φ	b	S	d	D	L1	L
DTL-10	8.5	16	2.5	5.2	10	30	64
DTL-16	8.5	16	3	6.2	11	33	70
DTL-25	8.5	18	3.2	7.2	12	36	75
DTL-35	10.5	20.5	3.5	8.5	14	42	85
DTL-50	10.5	23	4	9.7	16	43	90
DTL-70	12.5	26	4.5	11.5	18	50	102
DTL-95	12.5	28	5	13.5	21	53	112
DTL-120	14.5	30	5.2	15.1	23	55	120
DTL-150	14.5	34	5.8	16.5	25	57	126
DTL-185	17	37	6.5	18.5	27	60	133
DTL-240	17	40	7	20.7	30	62	140
DTL-300	21	46	8.5	23.2	34	66	160
DTL-400	21	50	8.7	26.2	38	72	168
DTL-500	21	55	9	29.5	42	75	185
DTL-630	21	60	10.5	34.5	50	82	215
B-type (DTL) non-standard copper-aluminum nose technical explanation
Type B	Screw holes	Board width	Plate thickness	Tube inner diameter	Tube outer diameter	Threading depth	Length
Specification	Φ	b	S	d	D	L1	L
DTL-10	8.5	14.5	2	6.5	10	28	64
DTL-16	8.5	14.5	2	6.5	10	28	64
DTL-25	8.5	16	2.2	7.3	11	28	68
DTL-35	10.5	18	2.3	8.5	12	31	74
DTL-50	10.5	20.5	2.6	9.5	14	38	82
DTL-70	12.5	23	3	11.5	16	41	92
DTL-95	12.5	26	3.2	13.8	18	43	98
DTL-120	14.5	28	3.6	15.4	20	46	104
DTL-150	14.5	30	4	16.8	22	47	113
DTL-185	17	33	4	18.8	24	52	120
DTL-240	17	35	4.7	20.5	28	57	130
DTL-300	21	42	5.5	23.5	32	61	148

4. DTL copper-aluminum nose technical parameters (there is a big gap between national standard and n +

Conductor	Conductor Nominal Cross Section mm²	Unarmoured Cable				Armored Cable
		single core		three cores		three cores
		in the air	Buried directly in soil	in the air	Buried directly in soil	in the air	Buried directly in soil
Copper conductor	25	165	160	140	150	140	150
	35	205	190	170	180	170	175
	50	245	225	205	210	205	210
	70	305	275	255	260	250	255
	95	370	330	310	305	310	305
	120	430	375	360	350	350	350
	150	490	425	405	390	400	390
	185	560	480	465	445	450	440
	240	665	555	550	520	530	510
	300	765	630	625	585	605	565
	400	890	725	730	665	700	645
Aluminum conductor	25	130	120	110	115	110	115
	35	155	145	130	140	130	140
	50	160	175	160	165	160	165
	70	200	215	200	200	195	200
	95	245	255	240	240	240	240
	120	280	290	285	275	270	270
	150	320	330	315	305	310	300
	185	365	370	365	350	350	340
	240	435	435	430	405	415	400
	300	500	490	490	455	475	445
	400	585	565	580	525	555	510

5. 10kV copper core, aluminum core cable current carrying capacity query table ◆8.7/10kV, 8.7/15kV +

Conductor	Conductor Nominal Cross Section mm²	Unarmoured Cable				Armored Cable
		single core		three cores		three cores
		in the air	Buried directly in soil	in the air	Buried directly in soil	in the air	Buried directly in soil
Copper conductor	50	245	225	215	210	210	210
	70	305	275	270	265	260	260
	95	370	330	325	315	330	315
	120	425	375	370	355	360	350
	150	485	420	425	400	410	390
	185	555	475	480	450	465	445
	240	650	555	565	525	545	515
	300	745	630	645	590	610	565
	400	870	720	750	675	-	-
	500	1000	825	-	-	-	-
Aluminum conductor	50	190	175	165	170	165	165
	70	235	215	205	200	200	200
	95	285	255	250	245	255	245
	120	330	290	290	275	280	270
	150	375	325	330	315	320	300
	185	430	370	375	350	365	345
	240	505	430	440	410	425	400
	300	580	490	505	460	475	445
	400	680	565	590	530	-	-
	500	790	645	-	-	-	-

6、35kV copper core, aluminum core cable current carrying capacity query table ◆21/35kV +

Nominal	in the air						underground
Section	1 core		2 cores		3 cores		1 core		2 cores		3 cores
/mm²	Copper core	Aluminum core	Copper core	Aluminum core	Copper core	Aluminum core	Copper core	Aluminum core	Copper core	Aluminum core	Copper core	Aluminum core
1.5	24	/	20	/	17	/	34	/	27	/	22	/
2.5	32	25	28	21	23	18	46	35	35	28	30	23
4	45	34	36	29	31	24	61	47	47	36	39	31
6	56	43	47	36	39	31	75	58	58	45	49	38
10	80	61	66	51	56	43	105	81	80	62	68	52
16	106	83	89	69	76	59	138	106	105	82	89	69
25	143	111	117	91	102	78	180	138	133	104	107	83
35	175	133	143	111	122	94	218	169	164	127	131	101
50	223	170	180	138	154	122	265	196	201	159	159	123
70	265	207	217	170	191	148	310	239	244	186	195	150
95	329	254	/	/	233	180	369	283	/	/	231	178
120	382	297	/	/	270	207	416	323	/	/	262	201
150	445	339	/	/	313	244	474	364	/	/	300	231
185	519	392	/	/	360	281	530	408	/	/	337	262
240	609	472	/	/	429	334	617	474	/	/	390	301

VII. Commonly used low-voltage cable current-carrying capacity query table +

Serial number	Transformer capacity( kva)	High side current (A)	High voltage side fuse type (A)	Low side current(A)	Low-voltage side fuse type(A)
1	5	0.29	3	7.22	10
2	10	0.58	3	14.43	20
3	20	1.15	3	28.87	30
4	30	1.73	5	43.30	50
5	50	2.89	10	72.17	75
6	80	4.62	10	115.47	150
7	100	5.77	15	144.34	150
8	125	7.22	15	180.43	200
9	160	9.24	20	230.95Z	250
10	200	11.55	20	288.68	300
11	250	14.43	25	360.85	400
12	315	18.19	30	454.68	500
13	400	23.09	40	577.37	600
14	500	28.87	50	721.71	750
High side fuse selection: 1. If the capacity is below 100KVA, the high-voltage side should be selected according to 2-3 times the rated current of the transformer. 2. For those with a capacity of 100KVA or more, the high-voltage side fuse should be selected according to 1.5-2 times the rated current of the transformer. ■Low-voltage side fuse selection The low-voltage side fuse of the transformer is selected according to the rated current of the transformer.

8. Power transformer high and low voltage fuse configuration query table +

Serial number	Copper core wire specification	Safe current carrying (A)	Able to carry load (kW)
1	1mm2	17	3.74
2	1.5 mm2	21	4.62
3	2.5 mm2	28	6.16
4	4 mm2	35	7.7
5	6 mm2	48	10.56
6	10 mm2	65	14.3
7	16 mm2	91	20.02
8	25 mm2	120	26.4

9. (Indoor wiring) The safe current carrying capacity of copper core wire and the corresponding situ +

Serial number	Transformer capacity	The capacity of the reactive power compensation device that should be configured	Low voltage reactive power compensation option
1	100 kVA	30	30
2	125 kVA	37.5	30
3	160 kVA	48	60
4	200 kVA	60	>60
5	250 kVA	75	60
6	215 kVA	64.5	60
7	400 kVA	120	120
8	500 kVA	150	>150
9	630 kVA	189	200
10	800 kVA	240	250
11	1000 kVA	300	300
12	1250 kVA	375	400
At present, the reactive power compensation capacity on the market has：100、134、150、167、200、234、250、267、300、334、350、367、400、434、450、467、500、534、550、567、600
Rated voltage(V)	Rated current(A)	Rated Capacity(kvar)	Capacitor Configuration
400	43.3	30	3 way 10kva r
400	86.6	60	4 way 15kvar
400	129.9	90	5 way 18kvar
400	173.2	120	5 way 24kvar
400	38.5	30	3 way 10kvar
400	77	60	4 way 15kvar
400	115.5	90	5 way 18kvar
400	154	120	5 way 24kvar

10. Inquiry form for low voltage reactive power compensation device corresponding to transformer of +

Number of cores	Model	square	mm	kg/km	A
Number of cores	Model	Specification	Cable outer diameter	Theoretical weight	Ampacity
1 core	JKLYJ	10	6.5	43.61	68
		16	8	63.63	93
		25	9.4	92.34	125
		35	11	127.38	150
		50	12.3	175.46	185
		70	14.1	238.18	235
		95	16.5	322.69	295
		120	18.1	393.82	345
		150	20.2	490.33	395
		185	22.5	611.73	460
		240	25.6	772.48	550
1 core	JKLGYJ	10/2	11	119.25	68
		3/16	11.9	150.01	93
		4/25	13.3	200.48	125
		6/35	14.4	248.96	150
		8/50	15.8	315.82	185
		10/70	17.5	410.93	235
		95/15	19.5	531.45	295
		120/20	21.2	649.29	345
		150/25	22.4	722.98	395
		185/30	24.5	896.67	460
		240/40	27.1	1133.48	550

11. Inquiry table for the load of 1kV overhead insulated wire +

Number of cores	Model	square	mm	kg/km	A
Number of cores	Model	Specification	Cable outer diameter	Theoretical weight	Ampacity
1 core	JKLYJ	10	11.6	122.89	77
		16	12.6	147.94	100
		25	13.8	187.13	135
		35	14.8	225.01	160
		50	16.1	283.62	195
		70	17.8	180.89	245
		95	19.6	208.85	300
		120	21	227.76	350
		150	22.6	249.24	400
		185	24.2	270.72	460
		240	26.4	299.88	550
		300	/	/	/
1 core	JKLGYJ	4/25	14.3	224.75	135
		6/35	15.4	275.4	160
		8/50	16.8	345.04	195
		10/70	18.5	>443.52	245
		95/15	20.7	575.53	300
		120/20	22.4	697.41	350
		150/25	23.6	773.95	400
		185/30	25.7	952.62	460
		240/40	28.3	>1195.6	550

13. Comparison table of safe current-carrying capacity of overhead lines +

Corresponding temperature Ampacity A Line model	35℃	40℃	45℃	50℃	55℃
LJ-16	93	84	76	66	53
LGJ-16	97	88	79	68	56
LJ-25	120	109	98	85	69
LGJ-25	124	112	101	88	71
LJ-35	150	136	123	106	87
LGJ-35	150	136	123	106	87
LJ-50	190	172	155	134	110
LGJ-50	195	177	159	138	113
LJ-70	234	212	191	166	135
LGJ-70	242	220	198	171	140
LJ-95	290	263	237	205	168
LGJ-95	295	268	241	209	171
LJ-120	330	300	270	234	191
LGJ-120	335	304	274	237	194
LJ-150	388	353	318	275	255
LGJ-150	393	357	322	279	227
LJ-180	440	400	360	312	255
LGJ-185	450	409	369	319	261
LGJ-240	540	491	442	383	313

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Automatic spraying fire hydrant pump, one use and one backup full pressure start control circuit dia
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Automatic spraying fire hydrant pump, one use and one backup, auto-coupling step-down starting contr
2021-05-29

Automatic spraying fire hydrant pump, one use, one backup, auto-coupling step-down starting control
2021-05-29

The automatic spraying fire hydrant pump is used and equipped with auto-coupling step-down starting
2021-05-29

12. 10kV overhead insulated wire energy load query table
2021-05-29

Smoke exhaust fan XKY(J)F-1/1
2021-05-29

Smoke exhaust fan XKY(J)F-1/2
2021-05-29

Smoke exhaust fan XKY(J)F-2/1
2021-05-29

Smoke exhaust fan XKY(J)F-2/2
2021-05-29

Smoke exhaust fan XKY(J)F-3/1
2021-05-29

Smoke exhaust fan XKY(J)F-3/2
2021-05-29

Smoke exhaust fan XKY(J)F-4/1
2021-05-29

Smoke exhaust fan XKY(J)F-4/2
2021-05-29

GB3906-2020　3.6～40.5kV AC metal-enclosed switchgear and control equipment