Explosion-proof package transformer substation of KTPV series
The KTPV series explosion-proof package transformer substation (hereinafter referred to as “substation”) is designed for supplying three-phase power to the electrical equipment installed in underground openings that are dangerous in gas (methane) and/or dust as well as for ensuring leakage-current protection and maximum overcurrent protection of low-voltage lines.
Interpretation of reference designation:
Technical specifications of the KTPV series substation of 6 kV voltage class:
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Power substation, kVA
|
Overall dimensions, LxWxH, mm
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Weight, kg
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Frequency, Hz
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Number of phases
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Voltage, kV
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Winding circuit and vector group
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Short-circuit voltage, %
|
|
|
HV
|
LV
|
|||||||
|
100
|
3175х950х1150
|
2300
|
50
|
3
|
6
|
0.4; 0.69
|
Yd11;
Yy0
|
4
|
|
160
|
3385х950х1250
|
2905
|
||||||
|
250
|
3460х950х1250
|
3150
|
||||||
|
400
|
3550х950х1350
|
3625
|
||||||
|
630
|
3765х950х1495
|
4560
|
0.69
1.2
|
|||||
|
1000
|
4015х1110х1565
|
6480
|
||||||
Technical specifications of the KTPV series substation of 10 kV voltage class:
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Power substation, kVA
|
Overall dimensions, LxWxH, mm
|
Weight, kg
|
Frequency, Hz
|
Number of phases
|
Voltage, kV
|
Winding circuit and vector group
|
Short-circuit voltage, %
|
|
|
HV
|
LV
|
|||||||
|
400
|
3695х1180х1410
|
4270
|
50
|
3
|
10
|
0.4; 0.69
1.2
|
Yd11;
Yy0
|
4
|
|
630
|
3695х1180х1500
|
5500
|
||||||
|
1000
|
1205х1180х1680
|
7090
|
||||||
Substation operating conditions:
- climatic category according to GOST 15150-69: UKhL5 (NF5 as per IEC);
- altitude above sea level: no more than 1000 m;
- ambient temperature: from -10º C to +35º C;
- relative ambient air humidity: up to 95% at 25° C;
- without jerks and bumps;
- environmental dust condition: no more than 1000 mg/m3;
- operating position in space: horizontal; departure from the operating position is permissible to any direction for up to 15°.
Others technical specifications:
- Protection rating is IP54.
- Type of explosion protection of the power transformer compartment and high-voltage switchgear of the substation is RV-4V (PB Exdial).
- Type of explosion protection of the low-voltage switchgear of the substation is RV-ZVIa (Exdial)
- At the high-voltage side of the substation, change of the transformer ratio by ±5% is provided for.
- At the low-voltage side of the substation, there is an access to switchover of the power transformer winding circuit and vector group.
KTPV series substation component parts and principle of operation:
The substation is composed of the power transformer compartment, high-voltage and low-voltage switchgears (RUVN and RUNN respectively), and undercarriage.
Primary voltage is fed to the power transformer compartment through a vacuum circuit breaker by closing the RUVN high-voltage switchgear disconnector. The power transformer transforms the electric power voltage and transmits to the RUNN low-voltage switchgear that distributes the voltage of electric power and transmits to consumers.
The RUNN low-voltage switchgear is not completed with an automatic circuit breaker since the protection of the outgoing line and the substation itself is provided on the RUVN high-voltage switchgear side by means of a high-voltage vacuum circuit breaker and integrated microprocessor-based protection and control unit.
In the event of overload, short circuit, leakage current, overvoltage, undervoltage or other failures in the system, the
RUNN low-voltage switchgear’s microprocessor-based unit will send the information on such a failure to the screen with simultaneous sending a signal to the RUVN high-voltage switchgear’s microprocessor-based unit, which will cause immediate deenergization of the power transformer by means of the vacuum circuit breaker; thus, protection of not only the consumer supply line but also the substation as a whole is provided.
The KTPV series substation is made in accordance with the Corporate Standard Ts 00212883-022:2014.