FK (R)N12-12 type indoor AC high-voltage load switch (fuse combination) is a three-phase high-voltage switch with rated power of 12KV and rated frequency of 50Hz, which is suitable for distribution offices and substations of industrial and mining enterprises. It is used as the protection and control of electrical equipment for dividing load current, closed-loop current, no-load transformer and cable charging current. Hybrid short-circuit current. Load switches equipped with ground switches can withstand short-circuit current. Equipped with manual and motor operating mechanism, easy to achieve the power system engineering three remote control requirements.

Product Specifications

Specification Sheet

Table1

No.	Name	Unit	Data
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50/60
3	Rated current	A	≤630(fuse≤125A)
4	Rated powder frequency withstand voltage	kV	48(Across the contact gaps)/42 (TO ground)
5	Rated lightning impulse withstand voltage	kV	75
6	Rated prospective short-circuit breaking current (fuse)	kA	31.5
7	Rated short time withstand voltage peak	kA	50
8	Rated short time withstand voltage	kA	20
9	Rated short-time withstand current duration	s	2
10	Rated breaking current	A	1200
11	Mechanical endurance	A	2000

Mechanical characteristics

Table2

No.	Name	Unit	Data
1	Travel	mm	210±4
2	Overtravel	mm	≥40
3	Inherent opening time of shunt release	ms	≤100
4	Main circuit resistance	μΩ	≤300
5	Closing no-simultaneity of 3-phase contacts	ms	≤10
6	opening no-simultaneity of 3-phase contacts	ms	≤5
7	Maximum operating torque for manual operation	N.m	≤160
8	Isolation break distance	mm	≥175

Scope of Application

FK(R)N-12 Load Break Switch and Combination Appliance has many scope of application:

Power distribution stations and substations for industrial and mining enterprises;

User terminals of box-type substations;

Product Advantages

FK(R)N-12 Load Break Switch and Combination Appliance has many advantages:

01.

Stable and reliableperformance,compact structure and small size

The product adopts compressed air arc extinguishing, with stable and reliable performance.The switch body and operating mechanism are integrated into one, integrating isolating switch, load switch and grounding switch, with compact structure and small size.

02.

Complete the operation in a single step

Direct-acting isolating break, high dynamic and thermal stable current parameters; unique linkage according to the prescribed operating procedures, one-time operation.

03.

prevent misoperation

Compressed air load switch, grounding switch, valve, switch cabinet door are strictly interlocked according to the "five protections" mechanical interlock to prevent misoperation, safe and reliable.

04.

Realizing the "three remote" requirements.

The spring energy storage operating mechanism can be opened and closed electrically or manually, which is convenient for realizing the "three remote" requirements.

Product Outline Drawing

FKRN-12 Load Break Switch and Combination Appliance figure1 price

Figure 1 Formal installation on the right side

FKRN-12 Load Break Switch and Combination Appliance figure 2 quotation

Figure2 Formal installation on the left side

Remark:

1. In addition to the above two standard shapes, FKRN12-12 series can be installed upside down according to the actual use;

2. FKRN12-12 can also cancel the grounding knife, or fuse.

Secondary Wiring Diagram

FKRN-12 Load Break Switch and Combination Appliance factory

NO	Code name	Name	Quantity	Remark
1	XT	Wire connecting terminal	1	TD660V-15A
2	KA1	closing relay	1	Hh54p
3	KA2	Opening relay	1	Hh54p
4	U1,U2	Rectifier silicon bridge	2	KBPC3510
5	TQ	tiripping electromagnet	1
6	M	Energy storage motor	1	59ZY-CJ02
7	SL3,SL2,SL1	Microswitch	3	LXW2-11
8	DF	Auxiliary switch	1	FK10-10

Figure 3: Electric operation wiring diagram

FKRN-12 Load Break Switch and Combination Appliance supplier

NO.	Code name	Name	Quantity	Remark
1	HK	Auxiliary switch	1	F10-10
2	U1	Single-phase rectifier bridge	1	KBPC2510
3	TQ	Single-phase rectifier bridge	1
4	XT	Terminal Blocks	1	TD660V-15A