17.5 kV metal clad , type NES-H metal clad air insulated switchgear.

alfanar NES-H is an Air Insulated Medium Voltage metal clad switchgear designed, manufactured and type tested in accordance with the latest IEC standards and Saudi Electricity Company (SEC) specifications.

alfanar NES-H Enclosure conforms to the highest quality requirements and has been tested for resistance to internal arc faults (IAC AFLR). Alfanar NES-H switchgear is widely used in the control and protection of medium voltage power equipment and circuits in industrial, commercial and utility facilities including generators, motors, supply circuits and transmission and distribution feeders.

Air Insulated Medium Voltage Metal Clad Switchgear according to IEC 62271-200
Rated voltage: 17.5kV
Main bus current ratings: (630/1250/3150/4000*) A, *4000A is forced cooling
Functional units: Incoming Feeder, Outgoing Feeder, Bus Riser, Bus Section, Bus VT/Ground
Short-circuit withstand current up to 40kA
Short circuit time (tsc): 3 sec
Frequency: 60Hz
Power frequency withstand voltage (for 1min): 38kV (rms)
Lightning impulse withstand voltage (1.2/50 μs): 95kV (peak)
Internal arc classification: AFLR (40KA/1sec)
Loss of continuity of service: LSC2B-PM

Technicial Specifications

Rated Voltage	kV	36
Rated Current	A	630
Rated Frequency	Hz	50 / 60
Mains Frequency Rated Withstand Voltage	kV – rms	70 / 80*
Lightning Strike Rated Withstand Voltage	kV – tepe	170 / 195*
Internal Arc Class (For Compact Types)	–	A (FL) 16 kA / 1s

Dowlands

Name of the product	Product Type	DWG	PDF
Busbar Connecting Cell with Load Disconnector	S19MR0070- SFA SBBS OUTDOOR
Current-Voltage Measurement Group with Load Disconnector	S19MR0315-SFA SBBS INDOOR
Current-Voltage Measurement Group with Breaker	S19MR0315-SFA SSBS INDOOR
Voltage Measuring Switchgear with Load Disconnector	SFA-RM17.5 SBS INDOOR
Air Insulated Cable Binding Cubicle	SFA-RM17.5 SBS (S18MR0410-SFA)

Technicial Specifications

Internal Arc Class (For Modular Types)	–	A (FLR) 16 kA / 1s
Short Term Rated Withstand Current	kA /s	16; 21 / 1; 3
SF6 Gas Filling Pressure (Absolute)	Bar	1.10
Minimum SF6 Gas Operating Pressure (Absolute)	Bar	1.05
Service Continuity Class	–	LSC2
Normal Operating Conditions Ambient Temperature (Max.) Height Place of use	– – –	40 ° C 2000 meter Internal