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TEXLIM T381-CH420

This surge arrester provides protection for switchgear, transformers and other equipment in high voltage systems against atmospheric and switching overvoltages.

Especially suitable for applications where:

–  The installation location is in an area with very high lightning intensity

–  Grounding or shielding conditions are poor or incomplete

–  The protected equipment is of especially importance

–  Energy requirements are very high (e.g. very long lines, capacitor protection)

–  The seismic level is considered extreme

 

The TEXLIM T-C is superior where low weight, non-fragility and additional personnel safety is required.

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General data
Unit
Neutral ground arrester
No
Family name
TEXLIM
Type designation
T381-CH420
Design
MO, Gapless
Manufacturer country
Hitachi Energy, Sweden
Maximum system voltage (Us)

kVrms
420
Arrester classification as per IEC 60099-4 Ed. 3.0

Class
Station; SH
Nominal discharge current

kApeak
20
Rated voltage (Ur)

kVrms
381
Maximum continuous voltage (Uc)

kVrms
267
Frequency

Hz
15-62
TOV capability (after thermal energy rating Wth)
1s

kVrms
420
10s

kVrms
400
Charge, energy and current withstand data
Repetetive charge transfer rating Qrs

C
5,2
Thermal energy rating Wth

kJ/kV (Ur)
15
Discharge current withstand strength
High current, 4/10 μs

kApeak
150
Low current, 2000 μs

Apeak
2600
Single-impulse Single-impulse withstand rating (IEEE), Repetitive charge transfer test value (IEC) - sample tests on all manufactured block batches

C
6,2
Energy data as per previous IEC standard IEC 60099-4, Ed 2.2
Line discharge class

Class
5
Energy capability - thermal energy capability (as per IEC 60099-4 Ed 2.2, clause 8.5.5)

kJ/kV (Ur)
15
Guaranteed max. protective data
Maximum residual/discharge voltage with current wave 30/60 μs (slow-front/switching)
0.5 kA

kVpeak
713
1.0 kA

kVpeak
733
2.0 kA

kVpeak
754
Maximum residual/discharge voltage with current wave 8/20 μs (fast-front/lightning)
5.0 kA

kVpeak
806
10 kA

kVpeak
839
20 kA

kVpeak
906
Maximum residual/discharge voltage with current wave 1/(2-20) μs (FOW as per IEEE, steep front as per IEC) External inductive effects neglected
10 kA

kVpeak
898
Technical data for housing
Short-circuit capability
High current, 0.2 s

kArms
80
Low current

Arms
600
External insulation - Requirements as per IEC 60099-4
LIWL, 1.2/50 μs

kVpeak
1178
50 Hz, wet (60 s)

kVrms
565
SIWL, wet (250/2500 μs)

kVpeak
942
External insulation - Sum of tested values on individual empty unit housing
LIWL, 1.2/50 μs

kVpeak
1781
50 Hz, wet (60 s)

kVrms
907
SIWL, wet (250/2500 μs)

kVpeak
1466
Creepage distance (nominal)
mm

mm
12500
mm/kV (Us)

mm/kV (Us)
30
Creepage distance class
Heavy (25 mm/kV (Us))
Specified long-term load (SLL)

Nm
21000
Specified short-term load (SSL)

Nm
40000
Insulator colour/material
Grey Silicone
Dimensions
7c
Mass (kg)
314
Amax (mm)
3829
B (mm)
900
C (mm)
800
D (mm)
400
With insulation base
Unit
1-pack
Volume

m3
4,16
Gross

kg
416
2-pack
Volume

m3
5,54
Gross

kg
802
3-pack
Volume

m3
5,54
Gross

kg
1143
1-pack
Volume

m3
4,16
Gross

kg
416
2-pack
Volume

m3
5,54
Gross

kg
802
3-pack
Volume

m3
5,54
Gross

kg
1143
1-pack
Volume

m3
4,16
Gross

kg
416
2-pack
Volume

m3
5,54
Gross

kg
802
3-pack
Volume

m3
5,54
Gross

kg
1143
Without insulation base
Unit
1-pack
Volume

m3
4,16
Gross

kg
389
2-pack
Volume

m3
5,54
Gross

kg
748
3-pack
Volume

m3
5,54
Gross

kg
1062
Each crate contains a certain number of arrester units and accessories for assembly and erection. A packing list is attached externally on each crate. Each separate crate is numbered and the numbers of all crates and their contents are listed in the shipping specification. Hitachi Energy reserves the right to pack arresters in the most effective/economic combination. Alternate or non-standard crates may involve additional charges. The table above is to be seen as an approximation and specific data for deliveries may differ from the values given.