DNF7

40,5 kV Air Insulated Switchboard Type DNF7

Standard type:

switchgear is small-sized armored air-insulation switchgear and can effectively save space;
switchgear has central design and is equipped with EvoPact HVX 35 kV indoor medium-voltage withdrawable and enclosed vacuum circuit breaker Schneider Electric;
switchgear possesses sufficient space for cable connection;
switchgear is equipped with earth a switch that has short-circuit making capacity and quick closing function.

Drive-operated type:

the circuit breaker and earth switch of switchgear are equipped with driver-operated device and can realize unattended transformer substation;
the driver-operated device possesses electric machinery overload protection function and extended functions including hand operation precedence and closing interlock, and operates steadily and reliably.

Switchgear Type		DNF7
Rated voltage	kV	40,5
Rated power frequency withstand voltage	kV/1 min	95
Rated lighting surge withstand voltage (peak value)	kV	185
Rated frequency	Hz	50/60
Rated current	A	630; 1250; 1600; 2000
Rated short circuit breaking current	kA	31,5
Rated short time withstand current (3s)	kA	63
Service type		one-sided/two-sided
Protection level:
Shell		IP 41
Between compartments		IP 21
Outline dimension:
W	mm	1200
H	mm	2400
D	mm	2505
Internal ARC Classification		AFLR
Partition class		PM
Loss of Service Continuity Classification		LSC2B

manufactured by Schneider Electric;
metal-clad switchgears is made of galvanized steel;
metal-clad switchgears shell is divided into compartments by grounded metal partitions and has increased mechanical strength;
thermal monitoring TH110;
environmental monitoring CL110;
service safety switchgear:
- presence of mechanical and electromagnetic interlocks that prevent errors during operational switching;
- design that protects against electric arc damage;
simplicity of maintenance and repair, convenient access to the equipment and points of connection of the cables;
use of modern equipment Schneider Electric;
motorized drive withdrawable circuit breaker (on request);
motor drive for earthing knife control (on request);
low weight of new switching devices.