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EXLIM Q228-DM300
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 EXLIM Q-D is an excellent choice when a porcelain housed surge arrester is required.
General data
Unit
Neutral ground arrester
No
Family name
EXLIM
Type designation
Q228-DM300
Design
MO, Gapless
Manufacturer country
Hitachi Energy, Sweden
Maximum system voltage (Us)
kVrms
300
Arrester classification as per IEC 60099-4 Ed. 3.0
Class
Station; SM
Nominal discharge current
kApeak
10
Rated voltage (Ur)
kVrms
228
Maximum continuous voltage (Uc)
kVrms
182
Frequency
Hz
15-62
TOV capability (after thermal energy rating Wth)
1s
kVrms
249
10s
kVrms
234
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
439
1.0 kA
kVpeak
451
2.0 kA
kVpeak
469
Maximum residual/discharge voltage with current wave 8/20 μs (fast-front/lightning)
5.0 kA
kVpeak
510
10 kA
kVpeak
537
20 kA
kVpeak
590
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
580
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
808
50 Hz, wet (60 s)
kVrms
391
SIWL, wet (250/2500 μs)
kVpeak
653
External insulation - Sum of tested values on individual empty unit housing
LIWL, 1.2/50 μs
kVpeak
1160
50 Hz, wet (60 s)
kVrms
556
SIWL, wet (250/2500 μs)
kVpeak
924
Creepage distance (nominal)
mm
mm
6570
mm/kV (Us)
mm/kV (Us)
22
Creepage distance class
Medium (20 mm/kV (Us))
Specified long-term load (SLL)
Nm
8000
Specified short-term load (SSL)
Nm
20000
Insulator colour/material
Brown Porcelain
Line terminals
Earth terminals
Drilling plans
Shipping data
Unit
1-pack
Volume
kg
1,4
Gross
kg
290
2-pack
Volume
m3
-
Gross
kg
-
3-pack
Volume
m3
2,8
Gross
kg
575
6-pack
Volume
m3
2,8
Gross
kg
835
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.
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