TISP61089SD POINN [Power Innovations Ltd], TISP61089SD Datasheet - Page 12

• Manufacturer Part Number: TISP61089SD
• Description: DUAL FORWARD-CONDUCTING P-GATE THYRISTORS PROGRAMMABLE OVERVOLTAGE PROTECTORS
• Manufacturer: POINN [Power Innovations Ltd]

TISP61089S
DUAL FORWARD-CONDUCTING P-GATE THYRISTORS
PROGRAMMABLE OVERVOLTAGE PROTECTORS
JULY 1999
section 4.5.15 - second-level power fault testing with wiring simulator
overcurrent protection
P R O D U C T
12
DURATION
1000
1000
1000
A.C.
Using a 25
and 2x2.9. The TISP61089S will probably fail for a peak current level of 2x24 A and the series current limiting
element must operate in under 0.1 s to prevent exceeding the TISP61089S package limit. For 2x7.7 A, the
series current limiting element must operate within 0.4 s for TISP61089S survival.
The purpose of this test is to ensure that the telephone cable does not become a hazard due to excessive
current. A series fuse, type MDQ 1-6/10A, simulates the safe current levels of a telephone cable. If this fuse
opens the equipment fails the test. For the equipment to pass, the equipment series overcurrent element must
reduce the current to below the MDQ 1-6/10A fusing level to prevent the simulator operating. The a.c. test
voltage can range from zero to 600 V, which gives a maximum conductor current of 10 A. Table 6 shows the
simulator fusing times for three current levels.
Using a 25
operating times will be , 12 s and 0.4 s respectively
For the equipment to pass this test, the TISP61089S series current limiting element must operate before the
MDQ 1-6/10A fusing times shown in table 7.
To meet ‘1089, the overcurrent protection must be coordinated with the requirements of sections 4.5.7, 4.5.8,
4.5.9, 4.5.12, 4.5.13, 4.5.15 and the TISP61089S. The overcurrent protection must not fail in the first level
tests of sections 4.5.7, 4.5.9 and 4.5.12. Recoverable overcurrent protectors (e.g. Positive Temperature
Coefficient Resistors) may operate during first level testing, but normal equipment working must be restored
s
OPEN-CIRCUIT
RMS VOLTAGE
table 6. second-level power fault currents with MDQ 1-6/10A fuse
series resistor will result in table 5. I
series resistor will result in table 6. I
100
300
600
I N F O R M A T I O N
V
table 7. operating times of MDQ 1-6/10A fuse
CURRENT
CIRCUIT
SHORT-
15
30
A
5
OPERATE
TIME TO
1000
0.2
0.5
10
s
1
5
RESISTANCE
SOURCE
TM
column values of 2x24, 2x7.7, 2x5.7, 2x11, 2x0.47, 2x1.4
20
20
20
TM
column values of 2x3.1, 2x9.4 and 2x19. Simulator
I
RMS
6.8
2.5
17
12
A
9
7
RESISTANCE
CIRCUIT
TOTAL
60
60
60
I
TRMS
1.7
5.0
10
A
I
2.4
7.1
14
TM
A
OPEN
TIME
TO
0.7
30
s