GP-70

Triggered Spark Gaps EVERYTHING IN A NEW LIGHT. P erkinElmer’s Triggered Ceramic-Metal Spark Gaps are a family of versatile high voltage switches. They consist of three electrodes in a hermetically sealed, pressurized ceramic envelope. Triggered Spark Gaps are generally characterized by a peak current capability of thousands to tens of thousands of amperes, delay times of tens of nanoseconds, arc resistance of tens of milliohms and inductance of 5 to 30 nanohenries. They are suitable for capacitor switching applications such as flashlamps, electrically pumped gas lasers, medical lithotripters, and as crowbar protection devices. Features • Fast switching operation • High voltage holdoff • Ceramic-metal construction • No warm up period • High current capability • Long life Triggered Spark Gap Ratings O -A PerkinElmer Range, kV Model Min/Max No. (1,10) (2) GP-89 GP-90 GP-91 GP-93 GP-82B GP-31B GP-20B GP-46B GP-85 GP-86 GP-87 GP-70 GP-30B GP-22B GP-12B GP-14B GP-41B GP-32B GP-15B GP-74B GP-81B 0.7 1.3 4.4 8 0.4 2 3.5 8 2 6 10 12 2 6 10 12 12 20 25 40 40 (3) VT Min Trig (kV Open Circuit (5) C 10 C A,C A, C A,B 10 TR-148A 30 TR-180B 300 TR-180B Typical Delay Time* Trigger Mode Recommended * when operated in mode A (Nanoseconds) PerkinElmer Transformer At 70% SBV At 40% SBV (6, 7) TR-148A 100 1000 Simultaneous Ratings Simultaneous Ratings Crowbar Service, Repetitive Switching Typical Life: Typical Life: 5000-20,000 Shots 1-5 Million Shots (11) (11) SBV, kV (4) 2.1 3.4 10 20 1.6 6 11 20 6 15 24 36 6 15 24 36 36 48 60 100 100 2.6 4.2 12.5 25 2 7.5 14 25 8 20 30 42(8) 7.5 19 30 42(8) 42 60(8) 86(8) 120(8) 120(9) 20 20 20 20 5 kA peak 0.1 coulomb 3 millicoulombs/shot lb = 35 mAdc lp = 6 Aac 7.5 kA peak 0.2 coulomb 4 millicoulombs/shot lb = 60 mAdc lp = 8 Aac A A,B A TR-1795 TR-180B TR1700 30 300 25 kA peak 0.4 coulomb 4 millicoulombs/shot lb = 100 mAdc lp = 10 Aac A,B TR-1795 A TR-1700 30 300 50 kA peak 0.5 coulomb 10 millicoulombs/shot A,B A TR-1795 TR-1700 TR-1795 30 300 A TR-1700 30 300 Peak currents up to 100 lb = 200 mAdc kA and charge transfer lp = 15 Aac up to 5 coulombs are obtainable at reduced life (100-1000 shots). Notes 1. Optimum operating voltage is typically 60 to 80% of SBV. 2. Operation below minimum value may result in erratic firing over time. 3. Operation at this value may result in self-firing over time. 4. Represents minimum main-gap breakdown voltage with no trigger applied. 5. Value shown contains safety factor for end-of-life requirements. 6. PerkinElmer TM-11A Trigger Module can be used to trigger all gaps. 7. Transformers listed vary mechanically and electrically. See PerkinElmer Transformer Data Sheet. 8. These units must be operated in a liquid or gas dielectric to prevent external flashover: GP-70 and GP-14B, above 24 kV; GP-32B and GP-15B, above 35 kV; GP-74B and GP-81B, above 60 kV. 9. Designed for high altitude, high holdoff conditions. 10. Other voltage ranges and mechanical configurations are available on request; for example, the GP-20B can be supplied with a 6 to 16 kV operating range by specifying GP-20B-20. The 20 would be the SBV and E-E maximum would be 80% of SBV = 16kV. 11. E = Stored energy in joules ( 1/2CV2), lb = average current in amperes, lp = RMS current in amperes, R = total circuit resistance in ohms, P = average power in watts. page 2 PerkinElmer Optoelectronics GP-89, GP-90, GP-91 AND GP-93 0.25 0.590 ± 0.030 0.062 ± 0.020 0.250 0.050 DIA THRU HOLE 0.062 ± 0.020 0.090 O.D. NOM RED AND WHITE TEFLON JACKET 19/34 TC CENTER CONDUCTOR 10 ± 1 LONG 0.700 MAX "T" 0.160 MAX "A" 0.200 MAX 0.310 MAX 1.200 MAX "O" 0.150 O.D. NOM RED VINYL JACKET 7/30 TC CENTER CONDUCTOR 10 ± 1 LONG 0.150 MAX 0.120 O.D. NOM BLACK VINYL JACKET 7/30 TC CENTER CONDUCTOR 10 ± 1 LONG GP-20B, GP-31B, GP-46B, AND GP-82B 4 EQUALLY SPACED MOUNTING HOLES 0.120 DIA (EACH END) 1.330 DIA B.C. 1.310 45° A MAX 1.187 1.550 GP-70, GP-85, GP-86, AND GP-87 CLEARANCE FOR A NO. 8 SCREW 4 HOLES EACH END ON A 2.575 B.C. 3.0 MAX 2.250 MAX 1.780 REF TYPE GP-20B,31B AND 82B GP-46B 1.600 DIA MAX 0.185 DIA 0.215 "T" "A" 1.020 DIA MAX "O" "A" 0.187 0.312 90° ± 1° 3.0 MAX DIA "A" "T" 10-32 UNF THD "O" CERAMIC BODY "A" 2.000 ± 0.010 DIA A GP-12B, GP-14B, GP-15B, GP-22B, GP-30B, GP-32B AND GP-41B CLEARANCE FOR A NO. 8 SCREW 6 HOLES EACH END ON A 3.937 B.C. 60° TYP GP-74B and GP-81B B 60° TYP "A" CLEARANCE FOR A NO. 8 SCREW 6 HOLES EACH END ON A 3.937 B.C. A 3.000 ± 0.050 DIA A 0.500 REF "A" B 4.250 ± 0.025 DIA "T" 4.250 ±0.025 DIA "T" 10-32 UNF THD 10-32 UNF THD "O" "A" "O" 0.4 REF GLAZED CERAMIC A MAX 2.375 3.625 B MAX 0.750 0.250 GLAZED CERAMIC TYPE GP-74B GP-81B A MAX 3.625 4.500 B MAX 0.250 RECESSED MIN CREEPAGE PATH IN INCHES 4 6 3.900 DIA MAX "A" TYPE GP-12B, 14B, 22B AND 30B GP-15B, 32B AND 41B “A” = ADJACENT ELECTRODE, “O” = OPPOSITE ELECTRODE, Note: Dimensions in inches “T” = TRIGGER PROBE All data and specifications subject to change without notice. PerkinElmer Optoelectronics page 3 Triggered Spark Gaps Ceramic Metal Environmental Specifications Ambient temperature range Operating temperature range Nonoperating temperature range Vibration Shock Thermal Shock -54 to +100°C -65 to +125°C 15 to 500 Hz at 10 g maximum 50 g, 11 milliseconds -65 to +125°C Electrical Specifications Electrode capacity Interelectrode resistance Less than 5 pf. Greater than 1010 ohms at 500 V. Mechanical Specifications Envelope Torque applied to studs Ceramic-metal, hermetically sealed, exposed metal parts nickel plated. 6 inch-pounds maximum. Marking PerkinElmer’s trademark, part designation, and date code. PerkinElmer welcomes inquiries about special types. We would be pleased to discuss the requirements of your application and the feasibility of designing a type specifically suited to your needs. Our Quality and Environmental Policy “Our goal is to supply our customers the agreed quantity of specified products and services, defect free and on time while conducting business in an environmentally responsible manner” * All values are nominal; specifications subject to change without notice. To request additional information, receive a quote, or place an order, please contact PerkinElmer Optoelectronics at office listed below. PerkinElmer Optoelectronics 35 Congress Street Salem, MA 01970 Toll Free: (800) 950-3441 (USA) Phone: (978) 745-3200 Fax: (978) 745-0894 PerkinElmer is a registered trademark of PerkinElmer, Inc. www.perkinelmer.com/opto Copyright © PerkinElmer All rights reserved Printed in U.S.A. 10/00