Being a compact structure, with the voltage transformers and arresters in a truck, the trucks are suitable for the switchgears with the widths 650mm or 800mm, and the height 537mm of the trucks can be installed in the under layer of the switchgears.
Being a compact structure, with the voltage transformers and arresters in a truck, the trucks are suitable for the switchgears with the widths 650mm or 800mm, and the height 537mm of the trucks can be installed in the under layer of the switchgears. The trucks have the electromagnetic locks which can prevent disoperation, and with the earthed copper bars in the chassis of trucks. The trucks can equipped the assistant switches S8 and S9, which can provide the structures with 3-open 2-close, 4-open 1-close or 5-open and so on.We can design the trucks according to the customers' special requirements as well.
Table 1 Main Data of VTs for YBCⅢ Trucks
|
Type |
Rated Primary Voltage (kV) |
Rated Secondary Voltage (kV) |
Rated Voltage of Residual Winding (kV) |
Accuracy Class and Burden of Secondary (VA) |
Limiting Output (VA) |
||
|
Cl. 0.2 |
Cl. 0.5 |
Cl. 1 |
|||||
|
JDZX30(G)-10RC |
10/√3 |
0.1/√3 |
0.1/3 |
15 |
30 |
60 |
350 |
|
JDZX18(G)-10RC |
10/√3 |
0.1√3 |
0.1/3 |
20 |
50 |
100 |
500 |
Note: The accuracy classes and burdens of residual windings are 6P, 50VA or 100VA.
Table 2 Main Data of VTs for YBCⅡ Trucks
|
Type |
Rated Primary Voltage (kV) |
Rated Secondary Voltage (kV) |
Accuracy Class and Burden of Secondary (VA) |
Limiting Output (VA) |
||
|
Cl. 0.2 |
Cl. 0.5 |
Cl. 1 |
||||
|
JDZ19(G)-10RJC and JDZ19(G)-10RVJC |
10 |
0.1 |
15 |
30 |
60 |
350 |
|
JDZ21(G)-10R(GB) and JDZ21(G)-10RV(GB) |
10 |
0.1 |
50 |
100 |
200 |
500 |
Table 3 Main Data of Fuses
|
Type |
Rated Voltage (kV) |
Rated Current (A) |
Breaking Ability (kA) |
|
|
XRNP1-3.6 |
3.6 |
0.3,0.5,1,2,3 |
50 |
|
|
XRNP1-7.2 |
7.2 |
|||
|
XRNP1-12 |
12 |
Table 4 Main Data of Arresters
|
Type |
System Rated Voltage (kV) |
Rated Voltage (kV) |
Continuous Operating Voltage (kV) |
Reference Voltage at DC 1mA (kV) |
Max Residual Voltage at Nominal Current (8/20μs 5kA) (kV) |
Max Residual Voltage at Switching Impulse (kV) |
Current Impulse |
|
|
2ms Rectangular Wave (18 times) (A) |
4/10μs Wave (2 times) (kA) |
|||||||
|
YH5WS-17/50 |
10 |
17 |
13.6 |
≥25 |
50 |
42.5 |
100 |
100 |
Note: The data listed in the above table are the normal ones, or we can design them according to the customers’ special requirements.
Outline drawing and installation dimensions
There are two structures for the trucks:
a. 2 VTs structure with type YBCⅡ-12: 2 units voltage transformers with fuses, JDZ19 (G)-10RJC, JDZ19 (G)-10RVJC or JDZ21 (G)-10R (GB), JDZ21 (G)-10RV (GB) in V-connection, and with a fuse support.
b. 3 VTs structure with type YBCⅢ-12: 3 units voltage transformers with fuses, JDZX30 (G)-10RC or JDZX18 (G)-10RC in Y-connection, and their residual voltage windings are for symmetrical monitor on 3-phase voltage.
Drawing 1. Outline and Installation Dimensions for Type YBCⅡ-12/150-650
Drawing 2 Outline and Installation Dimensions for Type YBCⅢ-12/150-650
Drawing 3 Outline and Installation Dimensions for Type YBCⅡ-12/210-800
Drawing 4 Outline and Installation Dimensions for Type YBCⅢ-12/210-800
Drawing 5 Outline and Installation Dimensions for Type YBCII-12/150-650
Drawing 6 Outline and Installation Dimensions for Type YBCII-12/210-800
Drawing 7 Electric Connection for Type YBC II-12
Drawing 8 Electric Connection of Two 3-open-2-close Assistant Switches S8 or S9 for Type YBC II-12
Drawing 9 Eearthing Connection for Type YBC III-12 Drawing 10 Electric Connection of Type YBC III-12
Drawing 11 Inner Secondary Connection for Type YBC III-12
Note: All the numbers lead to the secondary socket; 2.5mm2 strand wire shall be used for secondary circuit of voltage transformers (colors are according to the phase sequence).
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