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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.
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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.
PerkinE.