Prefab TNB Compact Substation for Electrical Grid Systems
Prefabricated TNB Electric Transformer Substation for Electrical Grid Systems
Product Description
Voltage levels
• Typically used for medium voltage distribution up to around 12kV on the primary side.
• Step down voltage to 400V or 690V on the secondary side.
• Suitable for applications with transformer capacities up to around 1600kVA.
Design Specifications
• Enclosure protection rating of IP54 or higher to protect against dust and occasional splashing of water.
• Insulation class of at least E (140°C) for transformers and switchgear.
• Equipment and components meet IEC standards for electrical substations.
• Optional protective devices like surge arresters, instrument transformers, etc.
Temperature Control
• Natural or forced air cooling systems to dissipate heat from components.
• Temperature sensors to monitor ambient and internal temperatures.
• Temperature control units to regulate fan speeds, activate alarms, etc.
• Heat exchangers or liquid cooling for high ambient temperatures.
• Optional air conditioning for extreme conditions.
Operational Safety
• Integrated protection relays and circuit breakers for overcurrent, overload and short-circuit protection.
• Optional protective relaying for earth faults, over/under voltages, reverse power, etc.
• Islanding prevention to automatically disconnect from the grid during outages.
• Fire suppression systems and protective earthing.
• Alarms, indicators and control panels for monitoring and operation.
• Security measures like locking doors and intruder detection.
Specification
| Rated Voltage | 12/17.5/24kV | 36kV |
|
Standard applicable |
IEC 62271 – 202 (IEC 61330) | IEC 62271 – 202 (IEC 61330) |
| Normal ambient temperature | 40 ° C | 40 ° C |
| Maximum ambient temperature | 50 ° C | 50 ° C |
| Enclosure construction | Modular | Modular |
| Ventilation | Natural | Natural |
| Temperature class (Std.) | K 10 | K 10 |
| MV and LV compartment | IP 54 | IP 54 |
| Transformer compartment | IP 23 | IP 23 |
| Rated voltage (kV) | 12/24kV | 36kV |
| Power frequency (kV rms) | 28/50 | 70 |
| Impulse (kV p) | 75/125 | 170 |
| Rated frequency (Hz) | 50/60 | 50/60 |
| Rated normal current (A) | 630 | 630 |
| Breaking capacity (A) | 630 | 630 |
| Making capacity (kA) | 52.5 / 40 | 50 |
| Rated normal current (A) | 630 | 630 |
| Breaking capacity (kA) | 21/16 | 20 |
| Making capacity (kA) | 52.5 / 40 | 50 |
| Rated power (kVA) – oil type | 2500 | 2000 |
| Rated power (kVA) – Dry type | 2500 | 2000 |
| Rated secondary voltage (V) | 433 | 433 |
| Vector group | Dyn 11 | Dyn 11 |
| Tapping range | + 5 in steps of 2.5% | + 5 in steps of 2.5% |
| IP | Yes | Yes |
| Internal arc | Yes | Yes |
| Enclosure class | Yes | Yes |
| Impact test | Yes | Yes |
| Short circuit test on earthing | Yes | Yes |
Advantages
1.Excellent quality
2.24 hour service
3.Professional design
4.Advanced technique
5.Rapid delivery
Production Facilities
Engineering
1.Power generation plants
2.Substations
3.Commercial buildings
4.Data centers
5.Renewable energy systems
6.Transportation
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.