Oil Filled Borehole Motor

Model Number

4

BASIC CHARACTERS

◆        Conform to international standard of IEC34-ICE, whole blocked asynchronous motor with squirrel cage rotor.

◆        Outer shell, shaft and bottom made of stainless steel.

◆        Copper annoys or Nickel plated cast-iron upper and bracket.

◆        Pressure automatic adjusting device made of oil and waterproof reformed butylrubber.

◆        Flange connector under the standard of NEMA (USA National Electrical Manufacturing Association).

◆        Special scaled product required by customers can be provided.

BASIC FEATURES

◆        Single phase: 0.37-2.2kW  220V(±10%)-50Hz

◆        Three phase: 0.55-7.5kW          220V/380v(±10%)-50Hz; 230V/400V(±10%)-50Hz

◆        Thrust load : 2500N

◆        Degree of protection: IP68

◆        Max. Ambient temperature: 35℃

◆        Water pH: 6.5-8.0

◆        Maximum submerged depth: 350m

◆        Insulation: F

◆        Minimum cooling flow along the motot: 8 cm/s

◆        Minimum starts per hour: 30

◆        Vertical and horizontal mounting position

◆        Motor protection by temperature compensated thermal relay and extra-quick trip overload

◆        Overload trip time: <10 seconds (at load is 5 times of rating current)

◆        Foat-water proof cable with separated earth

◆        Dimension of the cable  Single phase: 4╳1.5mm² (0.37-1.1kW); 4╳2.5mm² (1.5-2.2kW)

Three phase: 4╳1.5mm² (0.55-3kW); 4╳2.5mm² (4-7.5kW)

◆        Length of the cable Single phase: 1.0m(0.37-1.1kW); 1.5m(1.5kW); 1.7m(2.2kW)

Three phase: 1.0m(0.55-1.1kW); 1.5m(1.5kW); 1.7m(2.2-3.0kW):

2.0m(4.0kW); 2.5m(5.5kW); 3m(7.5kW)

No	Model	Power		Voltage(V)	Current(A)	COSΦ	rpm	Depth
		kW	HP
1	NFS4-0.5(S)	0.37	0.5	220	3.2	0.98	2870	397
2	NFS4-0.75(S)	0.55	0.75	220	4.2	0.98	2870	417
3	NFS4-1.0(S)	0.75	1.0	220	5.7	0.98	2870	442
4	NFS4-1.5(S)	1.1	1.5	220	7.8	0.98	2860	472
5	NFS4-2.0(S)	1.5	2	220	10.6	0.98	2860	502
6	NFS4-3.0(S)	2.2	3.0	220	13.8	0.98	2850	548
7	NFS4-0.75(T)	0.55	0.75	380	1.7	0.80	2850	397
8	NFS4-1.0(T)	0.75	1.0	380	2.3	0.80	2860	432
9	NFS4-1.5(T)	1.1	1.5	380	3.2	0.81	2860	452
10	NFS4-2.0(T)	1.5	2.0	380	4.2	0.81	2860	492
11	NFS4-3.0(T)	2.2	3.0	380	5.8	0.82	2870	548
12	NFS4-4.0(T)	3.0	4.0	380	7.1	0.82	2860	592
13	NFS4-5.5(T)	4.0	5.5	380	9.3	0.83	2860	657
14	NFS4-7.5(T)	5.5	7.5	380	13.0	0.84	2850	757
15	NFS4-10(T)	7.5	10	380	17.0	0.85	2850	892