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.