page 2

PerkinElmer Optoelectronics

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.

amperes, lp = RMS current in amperes, R = total circuit resistance

in ohms, P = average power in watts.

Notes

Trigger

Mode

C

C

A,C

A, C

A,B

A

A,B

A

A,B

A

A,B

A

A

Triggered Spark Gap Ratings

Simultaneous Ratings

Crowbar Service,

Typical Life:

5000-20,000 Shots

(11)

5 kA peak

0.1 coulomb

7.5 kA peak

0.2 coulomb

25 kA peak

0.4 coulomb

50 kA peak

0.5 coulomb

Peak currents up to 100

kA and charge transfer

up to 5 coulombs are

obtainable at reduced

life (100-1000 shots).

Simultaneous Ratings

Repetitive Switching

Typical Life:

1-5 Million Shots

(11)

3 millicoulombs/shot

lb = 35 mAdc

lp = 6 Aac

4 millicoulombs/shot

lb = 60 mAdc

lp = 8 Aac

4 millicoulombs/shot

lb = 100 mAdc

lp = 10 Aac

10 millicoulombs/shot

lb = 200 mAdc

lp = 15 Aac

At 70% SBV

100

30

30

30

30

30

At 40% SBV

1000

300

300

300

300

300

Recommended

PerkinElmer

Transformer

(6, 7)

TR-148A

TR-180B

TR-148A

TR-180B

TR-1795

TR-180B

TR1700

TR-1795

TR-1700

TR-1795

TR-1700

TR-1795

TR-1700

Typical Delay Time*

* when operated in mode A

(Nanoseconds)

PerkinElmer

Model

No.

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

(2)

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)

2.1

3.4

10

20

1.6

6

11

20

6

15

24

36

6

15

24

36

36

48

60

100

100

SBV, kV

(4)

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)

VT

Min Trig

(kV Open

Circuit

(5)

10

10

20

20

20

20

O-A

Range, kV

Min/Max

(1,10)