Type 2 Surge Arrester (KM2-20-3+1 SC)

Type 2 Surge Arrester (KM2-20-3+1 SC)

SKU: KM2-20-3+1 SC Category: Tag:

System: Three Phase TT/4 Pole

Nominal Voltage: 230V AC

Download PDF

SKU: KM2-20-3+1 SC Category: Tag:

Product Information:

Combination of varistor SPD and encapsulated spark gap connected in the 3 + 1 mode. Use in TT systems on the boundary of LPZ1 and LPZ2.

Suitable for houses, commercial, and industrial buildings.

Kingsmill fully coordinated mains devices to provide complete protection from entry point to equipment.

Features:

  • Remote signalling
  • Reversible installation
  • Biconnect terminals
  • Locking pluggable modules
  • Optical lifetime status indication

Benefits: No follow-through current. No leakage current. Coordinated range (install in close proximity to each other)

Standards: BS:EN 62305 (Lightning Protection) and EN 61643-11 (Surge Protection Devices).

LPL I + II
System: Three Phase TT
MDB: –
SDB: Boundary of LPZ1 and LPZ2 if >50m away from MDB.

LPL III + IV
System: Three Phase TT
MDB: Boundary of LPZ0 & LPZ1
SDB: Boundary of LPZ1 & LPZ2 if >50m away from MDB.

More Information:

In a well-designed system, it is important that for each building, both the incoming and outgoing circuits are protected by surge protection devices (where the cables enter and exit the building).

This includes:

  • Mains power supplies – including UPS
  • Telephone lines
  • Data communication lines
  • Instrumentation, control, signaling lines
  • Coaxial lines for CCTV, TV, & antenna cables

Field-based electronic equipment also needs to be protected.

PHASE
EARTHING SYSTEM
POLES
PART NO.
ThreeTT4KM2-20-3+1 SC

Spare Modules:

Spare modules are available. Replace when fault indication indicator turns from green to red

DESCRIPTION
ORDER NUMBER
Spare Module L-N (L-PE)
KM2-20
Spare Module N-PE
KM2-NPE

Electrical Specifications:

Order number
KM2-20-3+1 SC
System
Three phase TT/4 pole
Nominal voltageUn
230V AC
Nominal voltageUO
230V/400V AC ± 10%
Maximum operating voltage L-NUc
275V AC
Maximum operating voltage N-PEUc
255V AC
Nominal discharge current (8/20μs) L-N/N-PEIn
20kA
Maximum discharge current (8/20μs) L-N/N-PEImax
40kA
Voltage protection level at 5kA L-NUp
0.9kV
Voltage protection level mode L-NUp
1.35kV
Voltage protection level mode N-PE/L-PEUp
1.5kV
Ability to independently switch off the following current N-PEIf1
0.1kA
Short-circuit current ratingISCCR
50kA
Maximum overcurrent protection
160A gL/gG
Response time L-Nta
25ns
Response time N-PEta
100ns
Cross-section of connected conductors solid (min - max)
1mm² - 35mm²
Cross-section of connected conductors stranded (min - max)
1mm² - 25mm²
Fault indication L-N
Red indication field
Fault indication N-PE
No
Remote indication
Potential-free change-over contact
Remote indication contacts
250V/0.5A AC, 250V/0.1A DC
Cross-section of remote indication conductors
1.5mm²
Degree of protection
IP20
Range of operating temperatures (min - max)
-40°C - +80°C
Mounting
DIN rail 35mm
According to standard
EN 61643-11:2012, IEC 61643-11:2011 / T2
Weight
405g (nett), 450g (gross)

LPL:

LPL I + II
SYSTEM:THREE PHASE TT
MDB:-
SDB:BOUNDARY of LPZ1 & LPZ2 (if >50m away from MDB)

LPL III + IV
SYSTEM:THREE PHASE TT
MDB:BOUNDARY of LPZ0 & LPZ1
SDB:BOUNDARY of LPZ1 & LPZ2 (if >50m away from MDB)

Click the Image below to Download Installation Guide PDF:
C14923 SPD Installation Guide