PerkinElmer GP-93, GP-91, GP-90, GP-89, GP-87 Datasheet

Triggered Spark Gaps

P Ceramic-Metal

erkinElmer’s Triggered 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

EVERYTHING

IN A

NEW

LIGHT.

Triggered Spark Gap Ratings

		O -A		VT			Typical Delay Time*	Simultaneous Ratings	Simultaneous Ratings
PerkinElmer	Range, kV			Min Trig		Recommended	* when operated in mode A	Crowbar Service,	Repetitive Switching
Model	Min/Max			(kV Open	Trigger	PerkinElmer	(Nanoseconds)	Typical Life:	Typical Life:
No.	(1,10)		SBV, kV	Circuit	Mode	Transformer	At 70% SBV At 40% SBV	5000-20,000 Shots	1-5 Million Shots
	(2)	(3)	(4)	(5)		(6, 7)		(11)	(11)

GP-89	0.7	2.1	2.6		C	TR-148A
GP-90	1.3	3.4	4.2	10	C		100	1000	5 kA peak	3 millicoulombs/shot
GP-91	4.4	10	12.5		A,C	TR-180B			0.1 coulomb	lb = 35 mAdc
GP-93	8	20	25		A, C					lp = 6 Aac
GP-82B	0.4	1.6	2		A,B	TR-148A
GP-31B	2	6	7.5	10			30	300	7.5 kA peak	4 millicoulombs/shot
					A
GP-20B	3.5	11	14			TR-180B			0.2 coulomb	lb = 60 mAdc
GP-46B	8	20	25							lp = 8 Aac
GP-85	2	6	8		A,B	TR-1795
GP-86	6	15	20	20	A	TR-180B	30	300	25 kA peak	4 millicoulombs/shot
GP-87	10	24	30						0.4 coulomb	lb = 100 mAdc
						TR1700
GP-70	12	36	42(8)							lp = 10 Aac
GP-30B	2	6	7.5		A,B
GP-22B	6	15	19	20		TR-1795	30	300	50 kA peak
GP-12B	10	24	30		A	TR-1700			0.5 coulomb
GP-14B	12	36	42(8)							10 millicoulombs/shot
GP-41B	12	36	42		A,B	TR-1795			Peak currents up to 100	lb = 200 mAdc
									kA and charge transfer
GP-32B	20	48	60(8)	20	A	TR-1700	30	300		lp = 15 Aac
									up to 5 coulombs are
GP-15B	25	60	86(8)
									obtainable at reduced
GP-74B	40	100	120(8)			TR-1795
				20	A		30	300	life (100-1000 shots).
						TR-1700
GP-81B	40	100	120(9)

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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