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PEXLIM

PEXLIM Q336-YH420

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 high lightning intensity and high energy requirements

–  Grounding or shielding conditions are poor or incomplete

 

The PEXLIM Q-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
Q336-YH420
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; SM
Nominal discharge current

kApeak

10
Rated voltage (Ur)

kVrms

336
Maximum continuous voltage (Uc)

kVrms

267
Frequency

Hz

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

kVrms

369
10s

kVrms

349
Charge, energy and current withstand data
Repetetive charge transfer rating Qrs

C

2
Thermal energy rating Wth

kJ/kV (Ur)

8
Discharge current withstand strength
High current, 4/10 μs

kApeak

100
Low current, 2000 μs

Apeak

1000
Single-impulse Single-impulse withstand rating (IEEE), Repetitive charge transfer test value (IEC) - sample tests on all manufactured block batches

C

2,7
Energy data as per previous IEC standard IEC 60099-4, Ed 2.2
Line discharge class

Class

3
Energy capability - thermal energy capability (as per IEC 60099-4 Ed 2.2, clause 8.5.5)

kJ/kV (Ur)

8
Guaranteed max. protective data
Maximum residual/discharge voltage with current wave 30/60 μs (slow-front/switching)
0.5 kA

kVpeak

646
1.0 kA

kVpeak

664
2.0 kA

kVpeak

690
Maximum residual/discharge voltage with current wave 8/20 μs (fast-front/lightning)
5.0 kA

kVpeak

751
10 kA

kVpeak

791
20 kA

kVpeak

870
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

854
Technical data for housing
Short-circuit capability
High current, 0.2 s

kArms

65
Low current

Arms

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

kVpeak

1028
50 Hz, wet (60 s)

kVrms

498
SIWL, wet (250/2500 μs)

kVpeak

826
External insulation - Sum of tested values on individual empty unit housing
LIWL, 1.2/50 μs

kVpeak

1469
50 Hz, wet (60 s)

kVrms

733
SIWL, wet (250/2500 μs)

kVpeak

1203
Creepage distance (nominal)
mm

mm

11178
mm/kV (Us)

mm/kV (Us)

27
Creepage distance class
Heavy (25 mm/kV (Us))
Specified long-term load (SLL)

Nm

2500
Specified short-term load (SSL)

Nm

4000
Insulator colour/material
Grey Silicone
Dimensions
Mass (kg)
104
Amax (mm)
2803
B (mm)
1400
C (mm)
-
D (mm)
500
Shipping data
Unit
1-pack
Volume

kg

1,63
Gross

kg

195
2-pack
Volume

m3

-
Gross

kg

-
3-pack
Volume

m3

2,53
Gross

kg

425
6-pack
Volume

m3

-
Gross

kg

-
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.