Basler Electric BE1-87T - Manual (Page 114)

5-18 BE1-87T Test Procedures 9171300990 Rev V
Response Time Verification
Step 1. Connect the relay as appropriate (refer to Figures 5-1 through 5-4).
Step 2. Set the RESTRAINED PICKUP LEVEL switch (phase A) to A (15%). Place all of the INPUT
switches on the 0.4 A tap position.
Step 3. Apply 0.4 A at 50 or 60 Hz, as appropriate for the style, to Input 1 (terminals 11 & 13 on both
single- and three-phase styles) and to Input 2 (terminals 12 & 13 on single-phase and terminals
15 & 18 on three-phase).
Step 4. Perform a restrained trip at 2 x Pickup by stepping the Input 2 current to 0.68 A. Note the time
interval between initiation of the simulated fault and the closure of the restrained output contact.
The trip time should be less than that shown in Table 5-8.
Step 5. Repeat Step 4 at = 10 x Pickup. Note that, with Input 1 at 0.4 A, Input 2 current should be
stepped to 1.8 A. The trip time should be less than that shown in Table 5-8.
Step 6. Three-Phase Units Only: Repeat Steps 1 through 5 for Phases B and C.
Step 7. Place the UNRESTRAINED PICKUP LEVEL switch to the A setting (6 X TAP). Place all of the
INPUT switches to the 0.4 A tap position.
Step 8. With 0.0 A at Input 1 (terminals 11 & 13), apply 4.8 A (2 x Pickup) to Input 2 (terminals 15 & 18
on three-phase). Note the time interval between initiation of the simulated fault and the closure
of the unrestrained output contact. The interval should be less than that shown in Table 5-8.
Step 9. Repeat Steps 7 and 8 at 10 × Pickup. Note that, with Input 1 at 0.0 A, it will be necessary to
step the Input 2 current to 24 A for an unrestrained trip. The trip time should be less than that
shown in Table 5-8.
Step 10. Three-Phase Units Only: Repeat Steps 8 and 9 for phases B and C.
Table 5-8. Timing, 1 A, 50 or 60 Hz
Function Differential Current
Option 1-0
Timing Maximum
Option 1-1
Timing Maximum
50 Hz 60 Hz 50 or 60 Hz
Restrained Trip 2 x Pickup 81 ms 70 ms 49 ms
Restrained Trip 10 x Pickup 73 ms 67 ms 37 ms
Unrestrained Trip 2 x Pickup 64 ms 52 ms 57 ms
Unrestrained Trip 10 x Pickup 32 ms 28 ms 10 ms
I
OP