Specifications

For Subway,high building,airport, station, wharf, enterprise, tunnel.Three phase,power 5K-1000KVA,50-60Hz
Customed as request.

Specifications

1. SG series three phase dry type transformer adopts high quality material and advanced technology, it has advantages of fireproofing, damp – proof, safety, save electrical energy and convenient maintenance.

 

2. It can be applied to such power transmission and distribution places like underground railway , high building, airport, station, wharf, enterprise, tunnel, etc.

 

3. It is mainly used in power supply occasions of AC 50~60Hz and voltage less than 500V. All the input and output voltage , connection group and capacity of tapped winding can be designed and produced according to users’ requirements.

 

4. Single phase and three phase are avaliable.

 

Technique Specification

 1. Phase power range: 5KVA -1000KVA.

 2. Reactive Strength: Winding-winding, Winding-ground 2000VAC/50Hz/60S. Free of arcing breakage

 3. Insulation Resistance: Winding-ground 500VDC,insulation resistance ≥100MΩ

 4. Protection class:IP00 or as customer required.

 5. Insulation class: H

 6. Environment exists without gas, steam, chemical deposition, dust or dirt that will affect transformer’s insulation seriously, explosive or corrosive medium is not allowed.

7. Standard: IEC726:1982 dry power transformer

                        GB6450-86(equivalent to IEC726:198) 

 

Product performance

 

Position of transformer		Temp. rise limit(K)	Meas. methods	Item		Allowable deviation%)
Coil	B	80	Electri-resistivity	No-load loss		+15
	F	100		Load loss		+15
Iron core and structural part surface		Less than the maximum allowable temperature rise of insulating material	Surface Thermomeer/ Thermocouple method	Overall loss		+10
Insulation level: The transformer can withsand 2000V power frequency test voltage, lasting I min without breakdown, no flashover. Multiplier times the pressure continued to 1 min. Transformer performance to allow the deviation does not exceed the provisions of the following table.				No-load current		+30
				Impedance voltage		10
				Voltage ratio		0.5
				DC resistance unbalance ratio	Line	2
					Phase	4