TISP61089D View Datasheet(PDF) - Power Innovations
Part Name
Description
MFG CO.
TISP61089D
Power Innovations
TISP61089D Datasheet PDF : 17 Pages
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TISP61089
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
NOVEMBER 1995 - REVISED FEBRUARY 1998
table 2. second-level surge current
WAVE SHAPE
2/10
1.2/50, 8/20
(See Text)
OPEN-CIRCUIT
VOLTAGE
V
5000
5000
SHORT-CIRCUIT
CURRENT
A
500
420
GENERATOR
FICTIVE
SOURCE
RESISTANCE
Ω
10
4 + 8/conductor
TOTAL
CIRCUIT
RESISTANCE
Ω
50
52
IT
A
2x100
2x96
prospective short-circuit current wave shape to be similar to the 1.2/50 open-circuit voltage wave shape. The
TISP61089 will survive the 2x96 A 1.2/50 as its rating is 2x100 A.
Using a 25 Ω series resistor will result in table 2. IT column values of 2x143 and 2x135. The TISP61089 may
fail at these peak current values as they are higher than the TISP61089 ratings.
section 4.5.9 - Intra-building surge testing
These tests use a 2/10 wave shape. As shown in table 3, the peak currents for this test are 2x27 A and 17 A.
The TISP61089 can survive both these levels as its rating is 2x120 A.
table 3. intra-building surge currents
WAVE SHAPE
2/10
1.2/50, 8/20
(See Text)
OPEN-CIRCUIT
VOLTAGE
V
1500
800
1500
800
SHORT-CIRCUIT
CURRENT
A
100
100
94
100
GENERATOR
FICTIVE
SOURCE
TOTAL CIRCUIT IT
RESISTANCE
RESISTANCE
Ω
A
Ω
15
55
2x27
8
48
17
4 + 12/conduc-
56
2x27
tor
2+6
48
17
Compared to TR-NWT-001089, Issue 1, October 1991, GR-1089-CORE, Issue 1, November 1994, the 2/10
alternative of using a CCITT Recommendation K.22 1.2/50-8/20 combination wave generator has been
changed to an IEEE C62.41 1.2/50-8/20 generator. This generator usually has a single output and a fictive
resistance of 2 Ω. The 2/10 generator has fictive output resistances of 15 Ω and 8 Ω. GR-1089-CORE
compensates for this by adding an extra resistances of 12 Ω and 6 Ω in the output of the 1.2/50-8/20
generator. In practice, this extra resistance causes the prospective short-circuit current wave shape to be
similar to the 1.2/50 open-circuit voltage wave shape. The TISP61089 will survive the 2x27 A 1.2/50 as its
rating is 2x100 A.
Using a 25 Ω series resistor will result in table 3. IT column values of 2x38, 24, 2x37 and 24. The TISP61089
will survive these peak current values as they are lower than the TISP61089 ratings.
PRODUCT INFORMATION
10
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