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PEXLIM

PEXLIM Q072-YV072

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
Q072-YV072
Design
MO, Gapless
Manufacturer country
Hitachi Energy, Sweden
Maximum system voltage (Us)

kVrms

72
Arrester classification as per IEC 60099-4 Ed. 3.0

Class

Station; SM
Nominal discharge current

kApeak

10
Rated voltage (Ur)

kVrms

72
Maximum continuous voltage (Uc)

kVrms

58
Frequency

Hz

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

kVrms

79,1
10s

kVrms

74,9
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

139
1.0 kA

kVpeak

143
2.0 kA

kVpeak

149
Maximum residual/discharge voltage with current wave 8/20 μs (fast-front/lightning)
5.0 kA

kVpeak

162
10 kA

kVpeak

170
20 kA

kVpeak

187
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

184
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

221
50 Hz, wet (60 s)

kVrms

107
SIWL, wet (250/2500 μs)

kVpeak

178
External insulation - Sum of tested values on individual empty unit housing
LIWL, 1.2/50 μs

kVpeak

390
50 Hz, wet (60 s)

kVrms

200
SIWL, wet (250/2500 μs)

kVpeak

333
Creepage distance (nominal)
mm

mm

2889
mm/kV (Us)

mm/kV (Us)

40
Creepage distance class
Very Heavy (31 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)
28
Amax (mm)
743
B (mm)
-
C (mm)
-
D (mm)
-
Shipping data
Unit
1-pack
Volume

kg

0,14
Gross

kg

37
2-pack
Volume

m3

-
Gross

kg

-
3-pack
Volume

m3

0,51
Gross

kg

104
6-pack
Volume

m3

0,9
Gross

kg

188
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.