Isolation and Power Transformer - ETR 3P250KVA

ETR Galvanic Isolation Transformers provide isolation between network installations and sensitive electronic loads. Insulated aluminum or copper windings are wound on a high efficiency sheet core. ETR transformers are vacuum-impregnated varnished and high-temperature dried to ensure quiet and moisture-proof operation. It is safe and long lasting. 

Copper and Aluminum Winding
High Efficiency Sheet Core
Varnishing under vacuum
Oven drying at high temperature
Strengthened isolation up to 2500V
1KVA-600KVA power range
3 Phases, 2 Phases and 1 Phase input
Galvanic Isolation Transformer
Supply transformers
Voltage changing transformers
ETR Transformers Technical Features
Power (kVA)250 KVA
DesignOpen type
Vector GroupSpecial design for all vector groups of standard type
CoreHigh efficiency sheet core
Windings Insulation ClassCopper or Aluminum wire with fiberglass or enamel insulation F (H class is optional )
Input
Rated Input Voltage400VAC 3Phases+Neutral+Ground (Different Voltages are optional)
Voltage Tolerance-%15 , +%15
Frequency50 Hz. +/-%5 (60 Hz. Optional)
Output
Rated Output Voltage400VAC 3Phases+Neutral+Ground(Different voltages are optional)
Short Circuit Voltage5% (Average)
Efficiency>90% - 98%
Optional Features
CabinetCustom-designed monoblock welded cabinet between IP21 and IP54
Over-current ProtectionProtection with Circuit Breaker at Input and Output (can be selected with Cabinet Option)
Over-Temperature ProtectionWarning and protection with over-temperature thermostat
Display and SignalsMeasurement and signaling options for voltage, current, temperature parameters (It can be selected with Cabinet Option)
Environmental Conditions
Operating Temperature-10 °C ~ +40 °C
Altitude Operating Height1.500m
Humidity90% none condensed
Protection ClassIP00
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