Surge Arresters

Your partner in energy solutions

Quality Assurance & Standards

We follow stringent quality assurance guidelines & procedures. Arresters are subjected to numerous quality tests & controls to ensure high reliability & ongoing customer satisfaction.Quality assurance is performed in three stages: 1. Measurement of ZnO character-istics through a fully automated test facility. 2. Measurement of material quality and dimensional accuracy. 3. Full assembly and testing for the measurement of perform-ance characteristics such as leakage current, reference voltage and partial discharge. Our quality reputation extends throughout our entire product line and beyond to the customer site where the product is installed.

All of our Surge Arresters conform to the requirements of international quality standards while our quality and environmental management systems are certifi ed to ISO 9001:2000 and ISO 14001 respectively.

Maintenance & Service by CG Sales Networks

The products are self contained, maintenance free and require no spares over their entire life span. We recommend regular and periodic checks in accordance with pre-specifi ed schedules (indicated in the instruction manuals supplied with the arresters).

We provide solutions to all of your technical requirements through our highly quali-fi ed engineers, who have extensive experience in the fi eld. The service engineers and technicians from the CG Services Division can provide support for erection and on-site commissioning.

Background & Development

Surge arresters are used to protect power system installations and equipment against voltage surges caused by lightning, switching operations and abnormal service conditions. Generally arresters are connected in parallel with the equipment to be protected, typically between phase and ground.

Metal oxide arresters, without spark gaps, consist of an active element which is a highly non-linear ceramic resistor essentially composed of Zinc Oxide. Fine Zinc Oxide crystals are surrounded by other metal oxides (additives).

It is well-known that an effective surge protection device must demonstrate the following characteristics: > Extremely non-linear Voltage-Current characteristic that enables them to operate

only under transient conditions > Low power loss under normal operating conditions > Suffi cient energy-handling capability > High reliability and long life > Robust design and construction

Our Zinc Oxide surge arresters meet all of these requirements. We have a modern plant for the manufacture of Zinc Oxide arresters based on technical know-how from Hitachi Ltd., Japan. We have not only been able to master this technology but are also embarking on new fi elds of applications.

We manufacture various ZnO element sizes. These provide surge arresters with different energy handling capabilities.

All surge arresters in this catalog are designed and tested in line with the ANSI-IEEE C62.11 and/or IEC 60099-4 standards to fi t the customer’s need. Additional tests at -50C are performed to meet the temperature requirements for the Canadian market.

Testing

Our ZnO elements and arresters undergo stringent quality assurance and test procedures at every stage. CGL has a fully automated test facility. This also includes an acceptance and conformance facility as stipulated by the ANSI-IEEE, CSA or IEC standards for specifi c applications. The test facility is capable of testing elements for energy handling, lightning current performance, AC & DC characteristics and power loss.For standard acceptance tests, the plant has comprehensive facilities to test com-pletely assembled arrester units in a specially designed Faraday Cage.Each complete arrester unit must pass electrical tests for reference voltage, residual voltage & partial discharge. These tests are in addition to the 100% production testing performed on the metal oxide valve elements. Each arrester is also subjected to a leak test to ensure the integrity of the sealing system.

Features of the CG Sales Networks surge arresters

Range of ZnO Porcelain housed Surge Arresters

CG Power Systems offers the entire range of arresters (nominal system voltage up to 400 kV). These possess superior functional characteristics and high energy handling capabilities ranging from distribution class to station class (up to 13.0 kJ/kV MCOV).

Design and Construction

> Simple, robust and maintenance free construction > Positive locking of Zinc Oxide elements prevent block

displacement during shipping > ZnO elements with extremely non-linear V-I characteristics

offer high protective margins > Low power loss under normal system voltages resulting

in enhanced performance at elevated temperatures > Controlled environment assembly line > Ultra stable elements resulting in enhanced overvoltage

protection capacity > Shatter resistant pressure relief performance > Unique doughnut construction of ZnO elements offer

high-energy capability, provide uniform density & temperature distribution > Single stack design up to 144kV Duty Cycle Voltage, double

stack design up to 240kV Duty Cycle Voltage > Available in ANSI- Grey or Brown Porcelains

Performance

The ZLA3 arrester has the following general properties:

> TOV capability for 1 second: 1.37 > Energy Absorption Capability: 8.7 kJ / kV MCOV > Pressure Relief Capability: 65 kA rms sym. > Working cantilever strength: 70,000 lb-in > We are able to customize the surge arresters in such way to meet

any MCOV and TOV and energy capability requirement. Please contact your nearest company representative for solutions to your special needs. Energy absorption capabilities up to 13 kJ / kV MCOV is also available.

ZnO Porcelain Housed Surge Arresters For nominal system voltages up to 400 kV

Catalog No

Duty Cycle Voltage

MCOV Discharge Voltage (8/20S) (kV)

Switching Current

Steep Current Min.Reference Fig below

A Approx.Net WtDischarge

VoltageDischarge

VoltageLeakage

(kV) (kV) At 1.5kA At 3.0kA At 5.0kA At 10kA At 20kA At 40kA 1000A (kV) 10kA (kV) In/mm In/mm Lb

ZLA3003 3 2.55 6.4 6.9 7.2 7.8 8.6 9.4 6.2 9.2 15/375 3 20.3/505 57/26

ZLA3005 6 5.1 12.7 13.7 14.3 15.5 17.1 18.7 12.4 18.2 15/375 3 20.3/505 60/27

ZLA3007 9 7.65 19.2 20.7 21.6 23.4 25.8 28.2 18.7 27.5 15/375 3 20.3/505 62/28

ZLA3008 10 8.4 21.2 22.8 23.8 25.8 28.4 31.1 20.6 30.4 15/375 3 20.3/505 64/29

ZLA3010 12 10.2 25.4 27.4 28.6 31 34.2 37.4 24.8 36.5 15/375 3 20.3/505 66/30

ZLA3013 15 12.7 32 34.5 36 39 43 47 31.2 45.9 15/375 3 20.3/505 71/32

ZLA3015 18 15.3 38.7 41.8 43.6 47.2 52 56.9 37.7 55.6 25.6/640 3 24.2/605 84/38

ZLA3017 21 17 42.7 46 48 52 57.3 62.7 41.6 61.2 25.6/640 3 24.2/605 88/40

ZLA3019 24 19.5 51.1 55.1 57.5 62.3 68.7 75.1 49.8 73.3 25.6/640 3 24.2/605 93/42

ZLA3022 27 22 58.3 62.8 65.5 71 78.3 85.6 56.7 83.6 38.6/965 3 28.5/710 106/48

ZLA3024 30 24.4 63.2 68.1 71.1 77 84.9 93 61.5 90.6 38.6/965 3 28.5/710 110/50

ZLA3029 36 29 74.7 80.5 84 91 100 110 72.7 107 38.6/965 3 28.5/710 115/52

ZLA3031 39 31.5 81.2 87.6 91.4 99 109 119 79.1 117 45.3/1130 3 31.1/775 123/56

ZLA3036 45 36.5 94.5 102 106 115 127 139 92.1 136 45.3/1130 3 31.1/775 132/60

ZLA3039 48 39 99 107 112 121 133 146 96.7 142 45.3/1130 3 31.1/775 141/64

ZLA3042 54 42 112 120 126 136 150 164 109 160 71.5/1785 3 38.8/970 146/66

ZLA3048 60 48 128 138 144 156 172 188 125 184 71.5/1785 3 38.8/970 154/70

ZLA3057 72 57 150 162 169 183 202 221 146 215 71.5/1785 3 38.8/970 163/74

ZLA3070 90 70 189 203 212 230 254 277 184 271 102/2550 3 52.2/1305 203/92

ZLA3076 96 76 197 212 222 240 265 289 192 282 102/2550 3 52.2/1305 209/95

ZLA3084 108 84 223 241 251 272 300 328 217 320 150/3750 3 62.4/1560 254/115

ZLA3098 120 98 246 265 277 300 331 362 240 353 150/3750 3 62.4/1560 265/120

ZLA3106 132 106 271 292 305 330 364 398 264 388 150/3750 3 62.4/1560 276/125

ZLA3115 144 115 295 318 332 360 397 434 288 424 173/4325 3 62.4/1560 287/130

ZLA3131 168 131 342 369 385 417 460 503 333 491 174/4350 2 87.4/2185 375/170

ZLA3140 172 140 350 377 393 426 470 513 340 501 205/5125 2 101/2520 397/180

ZLA3144 180 144 366 395 412 446 492 537 356 525 205/5125 2 101/2520 406/185

ZLA3152 192 152 390 420 438 475 524 572 380 559 221/5525 2 97.6/2440 428/195

ZLA3180 228 180 461 497 519 562 620 677 449 662 252/6300 2 111/2775 518/235

ZLA3190 240 190 484 522 545 590 651 711 472 694 252/6300 2 111/2775 529/240

ZLA3209 258 209 521 562 586 635 700 765 508 747 276/6900 1 136/3400 575/261

ZLA3212 264 212 533 575 600 650 717 783 520 765 276/6900 1 136/3400 582/265

ZLA3220 276 220 556 600 626 678 748 817 542 798 371/9275 1 156/3910 661/300

ZLA3230 288 230 579 625 652 706 778 851 564 831 371/9275 1 156/3910 670/305

ZLA3235 294 235 592 639 666 722 796 870 577 850 371/9275 1 156/3910 675/307

ZLA3245 312 245 629 678 707 766 845 923 612 902 371/9275 1 1563910 692/315

ZLA3318 396 318 794 856 894 968 1067 1167 774 1139 449/11225 1 180/4500 827/376

ZLA3335 420 335 843 909 949 1028 1133 1239 822 1210 520/13000 1 180/4500 860/391

CG Arresters can be customized to meet virtually all your duty cycle voltage & MCOV requirements. Please contact your nearest sales representative for solutions to your special needs.

Electrical and Physical Characteristics

Line terminal option 1

Line terminal option 2

Standard us 10” bolt circle mounting available

Ground terminal standard

Line terminal standard

‘A’ : Overall Height

Fig 1 Fig 2 Fig 3

The above table summarizes the electrical and mechanical properties of the ZLA 3 surge arresters. As a standard we offer each surge arresters with the NEMA four hole line and ground terminal and the standard US 10” bolt circle mounting arrangement. Optional line terminal arrangements, base insulators and surge

counters with or without ammeter can be supplied at customer’s request. All our double and triple stack surge arresters include grading rings and corona rings if necessary. All surge arresters are delivered including stainless steel mounting bolts.

Electrical and Physical Characteristics

Performance

The ZPL2 arrester has the following properties.

> TOV capability for 1 second: 1.43 > Energy Absorption Capability: 5.4 kJ / kV MCOV > Pressure Relief Capability: 65 kA rms sym. > Working cantilever strength: 5200 lb-in

We are able to customize the surge arresters in such way to meet any MCOV and TOV requirement. Please contact your nearest company representative for solutions to your special needs.

ZnO Polymer Housed Surge Arresters For nominal system voltages up to 161 kV

Introduction

The new generation of polymer housed surge arresters incorporates a superior polymer material that is recognized by the industry.Our station class polymer surge arresters are designed & tested in accordance with the ANSI - IEEE C62.11 and IEC-60099-4 standards. These polymer surge arresters are suitable for both indoor & outdoor applications. Additional tests at -50 C° are performed to meet the temperature requirements for the Canadian market.

These surge arresters have the following features:

> Excellent protection against the ingress of moisture > Improved cantilever strength > High fault current capability > Excellent protective characteristics > Light weight > High durability > Superior performance in the presence of contamination

The type ZPL2 station class arresters offer the benefi ts of polymer housings for nominal system voltages up to 161 kV. The ZPL2 arresters are approximately 1/5 the weight of the porcelain equivalent resulting in ease of handling and installation.

Pressure Relief Capability

> Increases reliability and availability by shifting a number of maintenance critical components to the mainland; by applying hybrid transformer designs in combi-nation with on-line monitoring systems;

> The onshore booster reduces the short circuit currents for the submarine cable and offshore platform HV equipment and allows for smaller installed reactive power on the offshore platform;

> No need for a separate SVC, as the wind turbine generators will be used as a VAR compensator;

> Reduction of weight on the offshore platform, due to the lower oil volume of the main power transformer and reactors;

> Integrated switching design without switching transients; > Integrated design with regard to the compensation of the reactive power, in full

compliance with the grid operator’s requirements; > Maintenance of and interventions on the most maintenance critical components

are mainly shifted to the mainland (accessible 7/7 days and 24/24 hours).

Increased return on investment

The severity of a failure depends on the duration and magnitude of the available fault current passing through the arrester at the time of the failure. The ZPL2 type arrester, with its polymer housing, eliminates the potential danger of porcelain fragmentation. The ZPL2 design uses a fi berglass epoxy wrap to relieve the pressure that builds up during a failure. The arresters achieve a pressure relief capability of over 65 kA rms symmetrical.

Design of ZPL2 Arresters

The design consists of a number of Zinc Oxide elements contained within a fi berglass winding that is then inserted into the silicon rubber housing. Type ZPL2 arresters are shipped as single units for Duty Cycle Voltages from 3 kV to 72 kV.

Polymer Housing (Silicon Rubber)

The housing is manufactured by CGL and has been tested to provide long life even under contaminated conditions. Electrical and mechanical tests on the housing have included contamination tests, over-voltage tests, ultraviolet tests, thermal cycle and tracking wheel tests. The true test of a product or material always takes place in the fi eld.

ZnO Polymer Housed Surge Arresters For nominal system voltages up to 161 kV

Catalog No

Duty Cycle Voltage

MCOV Discharge Voltage (8/20S) (kV)

Switching Current

Discharge Voltage at

Steep CurrentDischarge

VoltageMin. Leakage

Reference Fig below

Height “A”

Approx.Net Wt

(kV) (kV) At 1.5kA At 3.0kA At 5.0kA At 10kA At 20kA At 40kA 500A (kV) 10kA (kV) In/mm In/mm Lb

ZPL2003 3 2.55 6.7 6.7 6.7 8 9 10.4 6.2 8.8 8.8 8.8 9.8/245 9.8/245ZPL2005 6 5.1 13.3 13.3 13.3 16 18.1 20.8 12.5 17.7 17.7 17.7 9.8/245 9.8/245ZPL2007 9 7.65 20 20 20 24 27.1 31.1 18.7 26.5 26.5 26.5 9.8/245 9.8/245ZPL2008 10 8.4 22.1 22.1 22.1 26.5 30 34.4 20.7 29.3 29.3 29.3 9.8/245 9.8/245ZPL2010 12 10.2 26.7 26.7 26.7 32 36.2 41.5 25 35.4 35.4 35.4 9.8/245 9.8/245ZPL2013 15 12.7 33.3 33.3 33.3 40 45.2 51.9 31.2 44.2 44.2 44.2 17.1/425 17.1/425ZPL2015 18 15.3 40.4 40.4 40.4 48.5 54.9 62.9 37.9 53.6 53.6 53.6 17.1/425 17.1/425ZPL2017 21 17 44.6 44.6 44.6 53.5 60.5 69.4 41.8 59.1 59.1 59.1 17.1/425 17.1/425ZPL2019 24 19.5 53.3 53.3 53.3 64 72.4 83 50 70.7 70.7 70.7 17.1/425 17.1/425ZPL2022 27 22 60.8 60.8 60.8 73 82.6 94.7 57 80.7 80.7 80.7 17.1/425 17.1/425ZPL2024 30 24.4 66.7 66.7 66.7 80 90.5 103.8 62.4 88.4 88.4 88.4 17.1/425 17.1/425ZPL2029 36 29 78.3 78.3 78.3 94 106 122 73.4 104 104 104 21.2/530 21.2/530ZPL2031 39 31.5 85 85 85 102 115 132 79.6 113 113 113 21.2/530 21.2/530ZPL2036 45 36.5 98 98 98 118 133 153 92.1 130 130 130 21.2/530 21.2/530ZPL2039 48 39 103 103 103 124 140 161 97 137 137 137 30.8/770 30.8/770ZPL2042 54 42 117 117 117 140 158 182 109 155 155 155 30.8/770 30.8/770ZPL2048 60 48 133 133 133 160 181 208 125 177 177 177 30.8/770 30.8/770ZPL2057 72 57 157 157 157 188 213 244 147 208 208 208 30.8/770 30.8/770ZPL2070 90 70 197 197 197 236 267 306 184 261 261 261 45.2/1130 45.2/1130ZPL2076 96 76 205 205 205 246 278 319 192 272 272 272 45.2/1130 45.2/1130ZPL2084 108 84 233 233 233 280 317 363 219 309 309 309 59/1475 59/1475ZPL2098 120 98 258 258 258 310 351 402 242 343 343 343 59/1475 59/1475ZPL2106 132 106 303 303 303 335 370 419 261 370 370 370 59/1475 59/1475ZPL2115 144 115 335 335 335 370 408 463 289 409 409 409 59/1475 59/1475

Note: CG Power Systems reserves the right to change the design and specifi cations in this catalogue without notice, due to continuous product improvements.

The above table summarizes the electrical and mechanical properties of the ZPL 2 surge arresters. As a standard we offer each surge arresters with the NEMA four hole line and ground terminal and the standard US 10” bolt circle mounting arrangement.

Optional line and ground terminal arrangements, base insulators and surge counters with or without ammeter can be supplied at customer’s request. All of our surge ar-resters include stainless steel mounting bolts.

CG Sales Networks USA IncOne Pauwels Drive - Washington 63090, MO - USATel. + 1 636 239 9300 - Fax + 1 636 239 1556

usa@cgglobal.com - www.cgglobal.com

Contact

Electrical and Physical Characteristics

‘A’ : Overall Height

Fig 1 Fig 2 Line terminal standard

Ground terminal standardAvailable

Ground terminal option1 Standard US 10” bolt circle mountingLine terminal option 2

Line terminal option 1