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Hy5ws-12.7/50 Zinc-Oxide Arrester
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Hy5ws-12.7/50 Zinc-Oxide Arrester

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  • PRW-12.7KV
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Product Description

METAL OXIDE SURGE ARRESTER
Polymer housed for outdoor application
Hy5ws-12.7/50 Zinc-Oxide Arrester
Features
Better Electrical performance & reliability
Ease of Installation-Light weight & smaller size
Better Operating conditions
Explosion & shatter proof & less mechanical
damage to nearby equipments
Better performance in polluted environment
Vandalism resistant
Free from Moisture ingress
Higher safety
Higher mechanical strength
Insensitive to UV radiation
High resistance to Ozone & Corona
Excellent Tracking resistance
Performance Data
System Voltage
Rated Voltage (kV):0.1-275
Nominal discharge current (kA)
High current capability (4/10us) kA
Energy Class :
Energy absorption Capability kJ/kV
Short Circuit (Pressure relief) kA:40
Standard in accordance with:IEC60099-4
Porcelain housed for outdoor application
Hy5ws-12.7/50 Zinc-Oxide Arrester
 
For protection of transformer & switchgear.
Highly non-linear MOV.
Explosion Proof - Pressure Relief Design.
High energy handling capacity.
Glazed brown Porcelain Housing.
Corrosion proof Aluminum alloy metal flange.
Suitable for Ambient -400C to +550C.
manufactures effective surge protection device with the modern technology of highly non-linear Zinc
Oxide Varistor blocks and thus diverts natural lightning surge and switching surge to earth and simultaneously clip off
any follow on current. Our station class arresters are designed to provide maximum safety to personnel and sub-station
equipment even at the enormous short circuit duty. Research and Development is an ongoing process at Elektrolites
with the active collaboration of experts in the industry.
CONSTRUCTION & OPERATING PRINCIPLE
Hy5ws-12.7/50 Zinc-Oxide Arrester
 
  Lightning Arrestors
 
11 kV
 
 
 
No. DETAIL UNITS DATA
  Type   11kV gapless type metal oxide surge
arrester - Distribution class
1. Nominal  system  voltage kV 11
2. Highest system voltage kV 12
3. Basic Insulation Level  (BIL) kV 95
   
3.   Ratings and type of surge arrester		    
4. Specification to which surge arrester complies   IEC
60099-4
5. Rated voltage of surge arrester kV 10
6. Nominal, 8/20 µs, discharge current rating of
surge arrester		 kA 10
7. Maximum continuous operating voltage of
surge arrester		 kV 7.3
8. Gapless or gapped type metal-oxide surge
arrester		   Gapless
9. Material of insulation   High temperature vulcanised silicon
rubber
10. Rated frequency of surge arrester Hz 50
11. Design altitude of surge arrester (above sea
level)		 m 1 400m
12. Design ambient temperature of surge arrester oC -1 to40
13. Specific creepage distance of surge arrester .mm/kV 25
  Automatic earth lead disconnectors
requirements		    
14. Automatic earth lead disconnectors to be fitted Yes/No YES
 

 
 
15. Corrosion protection of metal and alloy parts:
galvanising specification and/or stainless steel grade		   To SABS 763, 316
  Tests    
16. Previous type test results/certificate to be
provided with bid		 Yes/No Yes
17. Routine test results/certificate to be provided
on delivery		 Yes/No Yes
18. Drawing showing dimensions of the arrestor to
be provided with the bid		 Yes/No Yes
19. Minimum one minute wet power frequency
withstand voltage of external insulation of surge arrester housing		 kV 28
20. Maximum steep current impulse residual
voltage for a 10 kA, 1/20 µs, discharge current		 kV 50
21. Maximum lightning impulse residual voltage
for a 10 kA, 8/20 µs, discharge current		 kV 40
22. Lightning, 1,2/50 µs, impulse withstand level
of external insulation of surge arrester housing		 kV 95
23. Line discharge class rating   1
24. Long duration current, 2 000 µs, impulse
withstand		 A 250 A
25. High current, 4/10 µs, impulse withstand kA 100 kA
26. Automatic earth lead disconnector to be tested
in accordance with IEC 60099-4		 Yes/No Yes
 
 
 
 
 
 
 
 
 
 
 
33 kV
 
 
 
 
S/N TECHNICAL DETAILS UNITS DATA
1. Type   33kV gapless type metal
oxide surge arrester -
Distribution class
2. Nominal  system  voltage kV 33
3. Highest system voltage kV 36
4. Power frequency Hz 50
5. Basic Insulation Level  (BIL) kV 170
   
3.   Ratings and type of surge arrester		    
6. Specification to which surge arrester complies   IEC 60099
7. Rated voltage of surge arrester kV 29
8. Nominal, 8/20 µs, discharge current rating of surge arrester kA 10
9. Maximum continuous operating voltage of surge arrester kV 22
10. Gapless or gapped type metal-oxide surge arrester   Gapless
11. Insulation Material   Silicon rubber
12. Cantilever strength of surge arrester Nm 300
13. Rated frequency of surge arrester Hz 50
14. Design altitude of surge arrester (above sea level) m 1 400m
15. Design ambient temperature of surge arrester oC -1 to 40
16. Minimum phase-to-ground specific creepage distance of
surge arrester		 .mm/kV 25
  Automatic earth lead disconnectors requirements    
17. Automatic earth lead disconnectors fitted Yes/No Yes
18. Corrosion protection of metal and alloy parts: galvanising   To  SABS 763, 316
         
 

 
 
  specification and/or stainless steel grade    
  Tests    
19. Previous Type Test reports/certificate  from recognized
authority to be provided with bid		 Yes/No Yes
20. Minimum one minute wet power frequency withstand
voltage of external insulation of surge arrester housing		 kV 70
21. Maximum steep current impulse residual voltage for a 10
kA, 1/20 µs, discharge current		 kV 99.7
22. Maximum lightning impulse residual voltage for a 10 kA,
8/20 µs, discharge current		 kV 91.8
23. Lightning, 1,2/50 µs, impulse withstand level of external
insulation of surge arrester housing		 kV 170
24. Line discharge class rating Class 1
25. Long duration current, 2 000 µs, impulse withstand A 250 A
26. High current, 4/10 µs, impulse withstand kA 100 kA
27. Is the automatic earth lead disconnector tested in accordance
with IEC 60099-4?		 Yes/No Yes
 
 
 
 
66 kV
 
 
 
 
S/N TECHNICAL DETAILS UNITS DATA
1. Description   Station type lightning arrestor
complete with steel support structures.
2. Type   Zinc oxide gapless lightning
arrestor
  System parameters    
3. Nominal  system  voltage kV 66
4. Highest system voltage kV 72.5
5. Power frequency Hz 50
6. Type of system earthing   Effective/Non effective
7. Type of arrestor connection to system   Line to ground
   
3.   Ratings and type of surge arrester		    
8. Rated voltage of surge arrester kV rms 54
9. Nominal, 8/20 µs, discharge current rating of surge arrester kA peak 10
10. Maximum continuous operating voltage of surge arrester kV 43
11. Minimum one minute wet power frequency withstand voltage kVrms 140
 
 
151
 
 
 
 
  of external insulation of surge arrester housing    
12. Maximum steep current impulse residual voltage for a 2 kA,
30/60 µs, discharge current		 kVpeak 104
13. Maximum lightning impulse residual voltage for a 10 kA, 8/20
µs, discharge current		 kVpeak 127
14. Minimum lightning, 1,2/50 µs, impulse withstand level of
external insulation of surge arrester housing		   325
15. Line discharge class rating   2
16. Lighting arrestor counter, leakage current meter and their
accessories to be provided		 Yes/No Yes
17. Gapless or gapped type metal-oxide surge arrester   Gapless
18. Insulation Material   Porcelain
19. Cantilever strength of surge arrester Nm 3000
20. Rated frequency of surge arrester Hz 50
21. Maximum angle from vertical at which surge arrester is fully
functional		 Deg 45
22. Design altitude of surge arrester (above sea level) m 1400 m
23. Design ambient temperature of surge arrester oC -1 to 40
24. Humidity % 85
25. Specific phase-to-ground creepage of surge arrester .mm/kV 25
26. Corrosion protection of metal and alloy parts: galvanising
specification and/or stainless steel grade		   to SABS 763 or 316 stainless
steel
27. Previous type test results/certificate to be provided with bid Yes/No Yes
28. Design drawings showing dimensions including foundations
and brochures to be provided with bid		 Yes/No Yes
29. Quality Assurance certification to be provided with the bid Yes/No Yes
30. Routine test results/certificate to be provided on delivery Yes/No Yes
31. Galvanized steel support structures complete with bolts &
washers to be provided on delivery		 Yes/No Yes
32. Applicable standard   IEC60099
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
152

 
 
 
 
88Kv
 
 
 
 
S/N TECHNICAL DETAILS UNITS DATA
33. Description   Station type lightning arrestor
complete with steel support structures.
34. Type   Zinc oxide gapless lightning
arrestor
  System parameters    
35. Nominal  system  voltage kV 88
36. Highest system voltage kV 100
37. Power frequency Hz 50
38. Type of system earthing   Effective/Non effective
39. Type of arrestor connection to system   Line to ground
   
3.   Ratings and type of surge arrester		    
40. Rated voltage of surge arrester kV rms 84
41. Nominal, 8/20 µs, discharge current rating of surge arrester kA peak 10
42. Maximum continuous operating voltage of surge arrester kV 67
43. Minimum one minute wet power frequency withstand voltage
of external insulation of surge arrester housing		 kVrms 185
  Maximum steep current impulse residual voltage for a 2 kA, kVpeak 188
  30/60 µs, discharge current    
45. Maximum lightning impulse residual voltage for a 10 kA, 8/20
µs, discharge current		 kVpeak 218
46. Minimum lightning, 1,2/50 µs, impulse withstand level of
external insulation of surge arrester housing		   450
47. Line discharge class rating   2
48. Lighting arrestor counter, leakage current meter and their
accessories to be provided		 Yes/No Yes
49. Gapless or gapped type metal-oxide surge arrester   Gapless
50. Insulation Material   Porcelain
51. Cantilever strength of surge arrester Nm 3000
52. Rated frequency of surge arrester Hz 50
53. Maximum angle from vertical at which surge arrester is fully
functional		 Deg 45
54. Design altitude of surge arrester (above sea level) m 1400 m
55. Design ambient temperature of surge arrester oC -1 to 40
56. Humidity % 85
57. Specific phase-to-ground creepage of surge arrester .mm/kV 25
58. Corrosion protection of metal and alloy parts: galvanising
specification and/or stainless steel grade		   to SABS 763 or 316 stainless
steel
59. Previous type test results/certificate to be provided with bid Yes/No Yes
60. Design drawings showing dimensions including foundations
and brochures to be provided with bid		 Yes/No Yes
61. Quality Assurance certification to be provided with the bid Yes/No Yes
62. Routine test results/certificate to be provided on delivery Yes/No Yes
63. Galvanized steel support structures complete with bolts &
washers to be provided on delivery		 Yes/No Yes
64. Applicable standard   IEC60099
 
 
 
 
 
 
 
 
 
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