SKU: GDE-SG-M-250kVA
Category: Transformer
Availability: Unlimited
The TSTY 250kVA Isolation Transformer is designed to deliver dependable, clean, and stable power for small to medium-scale industrial, commercial, and institutional applications. With a 400V Delta primary and 400V Star secondary configuration, it provides full electrical isolation, improving safety and protecting sensitive equipment from power disturbances and voltage fluctuations.
Engineered with high-quality copper windings and a robust oil-immersed design, this transformer reduces electrical noise, prevents ground loop issues, and ensures reliable power for critical operations. Its durable construction and efficient cooling system make it ideal for environments where consistent and uninterrupted power is essential.
Best For:
✔ Small to medium-scale factories and manufacturing plants
✔ Healthcare and IT facilities
✔ Commercial complexes and institutional buildings
✔ Equipment requiring stable, isolated power
Brand: TSTY
Model Number:
Availability: In stock
Minimum order quantity: 1
Maximum order quantity:
Listed date: 14th Dec, 2025
Electrical Specifications
Brand: TSTY
Model: SG-M-250kVA
Rated Capacity: 250kVA
Primary Voltage (H.V): 0.4kV (400V)
Secondary Voltage (L.V): 0.4kV (400V)
Vector Group: Dyn11
Phase: 3-Phase
Frequency: 50Hz
Short Circuit Impedance: 4%
H.V Current: 360.84A
L.V Current: 360.84A
Losses
No-Load Losses: 620W (±15%)
Load Losses: 3120W (±15%)
Construction & Design
Winding Material: Copper to Copper
Transformer Type: Oil-immersed
Cooling Method: ONAN
Oil Type: Mineral oil
Core Material: Silicon steel sheet
Physical Details
Dimensions (L × W × H): 1290 × 920 × 1020 mm
Weight: 900 kg
Safety & Monitoring
Oil level thermometer: Equipped
Oil level indicator: Equipped
Pressure relief device: Equipped
Lifecycle & Warranty
Service Lifetime: 15–20 years
Warranty: 2 Years
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