Characteristics

-LED operation status display function

-RS-485 Communication Functions (Option)

-Mov Fault Alarm Function(Option)

-Surge Counter Function (Option)

 

Technical Data (KSC IEC 61643-11)

Model

SZK-12.5/50-2205

SZK-12.5/50-380Y

Electrical Properties

1P2W

3P4W

Maximum Continuous Usage Voltage             Uc

275V

275V

Impulse discharge current (10/350uss) lymph (L-N/N-PE)

12.5/50kA

12.5/50kA

Nominal discharge current (8/20uss)     In (L-N/N-PE)

12.5/50kA

12.5/50kA

Voltage Protection Level                    Up

<2kV

<2kV

Up(N-PE)

<2.5kV

<2.5kV

Response time                   tA (L-N/N-PE)

<25ns/100ns

<25ns/100ns

Rated Short Circuit Current             ISCCR (L-N)

25kA

25kA

 

Mechanical Properties

Heat Protection

Yes

Temperature range

-40·C~+80·C

Installation Method

4XM4 Bolt

Coverage protection rating

IP20

Exterior material

Steel 1.6mm

Solid Indication

Red LED (ON)

Remote Monitoring Contact

Yes

Connection conductor section area

L/N:10mm²,PE:16mm²

 

SZK-12.5/50-XXX Installations

1. Preparing to Install

1) Disconnect power from the breaker before installing the product.

2) Check the voltage of the system at the installation site.

3) The grounding method of the installation site system shall be checked,and all grounds shall comply with the relevant regulations.

 

2. Installation Method

1) Secure the SPD near the target to be protected.

2) Cut the wire of the SPD to an appropriate length and perform terminal processing.

3) Connect the power terminal of the SPD to the load side of the breaker and the ground terminal to the ground side.

4) After raising the circuit breaker and supplying power,check whether the power LED (Green) is illuminated and the fault LED (Red) is not illuminated.

 

Install an SPD separator on the load side terminal of the three-phase,four-wire branch breaker inside the switchboard,or on the front end of the facility to be protected,and connect it with the above connection diagram.

 

3. Precautions

1) When testing a track for withstand voltage and insulation resistance measurement,the SPD must be separated from the track.(If withstand voltage,insulation resistance,or other pressurization tests are carried out while SPD is connected,it will cause failure.)

2) Repairs or modifications of SPD arbitrarily can cause failure or malfunction.