Toshiba GRT100 Series Instruction Manual page 119

Single-phase
current
source

DC
power

supply
Start
Time
counter
Stop
OV
Figure 6.5.4 Operating Time Test (Model 100s, 200s)
 Set a test current to 3 times of DIF operating current (= CT secondary rated current  ik
setting).
 Apply the test current and measure the operating time.
 Check that the operating time is 40 ms or less.
TB 1
A
TB 4
 118 
6 F 2 S 0 7 8 9
GRT100
-1
a I
- 2
A
Monitoring
jack
0V
- A16
- A17
E