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PEXLIM

PEXLIM R120-YH123

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:

–  Requirements of lightning intensity, energy capability and pollution are moderate

 

The PEXLIM R-Y is superior where low weight, reduced clearances, flexible mounting, non-fragility and additional personnel safety is required.

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General data
Unit
Neutral ground arrester
No
Family name
PEXLIM
Type designation
R120-YH123
Design
MO, Gapless
Manufacturer country
Hitachi Energy, Sweden
Maximum system voltage (Us)

kVrms

123
Arrester classification as per IEC 60099-4 Ed. 3.0

Class

Station; SL
Nominal discharge current

kApeak

10
Rated voltage (Ur)

kVrms

120
Maximum continuous voltage (Uc)

kVrms

78
Frequency

Hz

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

kVrms

131
10s

kVrms

123
Charge, energy and current withstand data
Repetetive charge transfer rating Qrs

C

1,2
Thermal energy rating Wth

kJ/kV (Ur)

5
Discharge current withstand strength
High current, 4/10 μs

kApeak

100
Low current, 2000 μs

Apeak

600
Single-impulse Single-impulse withstand rating (IEEE), Repetitive charge transfer test value (IEC) - sample tests on all manufactured block batches

C

1,5
Energy data as per previous IEC standard IEC 60099-4, Ed 2.2
Line discharge class

Class

2
Energy capability - thermal energy capability (as per IEC 60099-4 Ed 2.2, clause 8.5.5)

kJ/kV (Ur)

5
Guaranteed max. protective data
Maximum residual/discharge voltage with current wave 30/60 μs (slow-front/switching)
0.5 kA

kVpeak

248
1.0 kA

kVpeak

257
2.0 kA

kVpeak

270
Maximum residual/discharge voltage with current wave 8/20 μs (fast-front/lightning)
5.0 kA

kVpeak

294
10 kA

kVpeak

312
20 kA

kVpeak

349
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

337
Technical data for housing
Short-circuit capability
High current, 0.2 s

kArms

50
Low current

Arms

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

kVpeak

405
50 Hz, wet (60 s)

kVrms

186
SIWL, wet (250/2500 μs)

kVpeak

310
External insulation - Sum of tested values on individual empty unit housing
LIWL, 1.2/50 μs

kVpeak

620
50 Hz, wet (60 s)

kVrms

300
SIWL, wet (250/2500 μs)

kVpeak

500
Creepage distance (nominal)
mm

mm

3726
mm/kV (Us)

mm/kV (Us)

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

Nm

1000
Specified short-term load (SSL)

Nm

1600
Insulator colour/material
Grey Silicone
Dimensions
Mass (kg)
27
Amax (mm)
1216
B (mm)
-
C (mm)
-
D (mm)
-
Shipping data
Unit
1-pack
Volume

kg

0,7
Gross

kg

55
2-pack
Volume

m3

-
Gross

kg

-
3-pack
Volume

m3

0,7
Gross

kg

106
6-pack
Volume

m3

1,2
Gross

kg

187
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.