Jumper positions (2-(2, Jumper positions (1-(2, Jumper positions ∆2-∆2 -23 – Basler Electric BE1-87T User Manual
Page 119: Jumper positions ∆1-∆2 -23
9171300990 Rev V
BE1-87T Test Procedures
5-23
This verifies the A- and C-phase differential circuits which respond together as provided
earlier
in the
Verification Tests: 5 Amp CT or Verification Tests: 1 Amp CT
in this section. The B-
phase differential circuit sees no current and does not respond.
NOTE
The same test connections are used for ∆1-∆1 and ∆2-∆2. The proper jumper
position is confirmed by which relay differential circuits respond for the specific
condition.
Jumper Positions ∆2-∆2
Step 1. Connect Input 1 current to terminals A and N.
Connect Input 2 current to terminals A and N.
This verifies the A- and C-phase differential circuits which respond together as provided earlier
in the
Verification Tests: 5 Amp CT or Verification Tests: 1 Amp CT in this section. The B-
phase differential circuit sees no current and does not respond.
Step 2. Connect Input 1 current to terminals B and N.
Connect Input 2 current to terminals B and N.
This verifies the A- and B-phase differential circuits which respond together as provided earlier
in the
Verification Tests: 5 Amp CT or Verification Tests: 1 Amp CT in this section. The C-
phase differential circuit sees no current and does not respond.
Step 3. Connect Input 1 current to terminals C and N.
Connect Input 2 current to terminals C and N.
This verifies the B- and C-phase differential circuits which respond together as provided earlier
in the
Verification Tests: 5 Amp CT or Verification Tests: 1 Amp CT in this section. The A-
phase differential circuit sees no current and does not respond.
Jumper Positions ∆1-∆2
Step 1. Connect Input 1 current to terminals A and N.
Connect Input 2 current to terminals N and B.
This verifies the A- and B-phase differential circuits which respond together as provided earlier
in the
Verification Tests: 5 Amp CT or Verification Tests: 1 Amp CT in this section. The C-
phase differential circuit sees no current and does not respond.
Step 2. Connect Input 1 current to terminals C and N.
Connect Input 2 current to terminals N and A.
This verifies the A- and C-phase differential circuits which respond together as provided earlier
in the
Verification Tests: 5 Amp CT or Verification Tests: 1 Amp CT in this section. The B-
phase differential circuit sees no current and does not respond.
Step 3. Connect Input 1 current to terminals B and N.
Connect Input 2 current to terminals N and C.