ABB UniGear Digital, Commissioning And Testing Manual

Page: 84 / 98

SECO NDARY TEST S ETU PS SECO NDARY TESTING O F PROTECTIO N R ELAYS
72 1VLG5000 17 C
Test Setup for Megger – 3 phases
FREJA 546 (Low Level Output Hardware option) is interconnected with a Low-level test
adapter. The test adapter provides the interface between ABB’s Relion
® 615/620 series fitted
with combined sensor inputs and the tester. The test adapter is usually connected to the pro-
tection relay through ESSAILEC
® test blocks via connecting shielded cables terminated with
RJ45 connectors. If the ESSAILEC ® test blocks are not installed then the test adapter is con-
nected directly to the protection relay via connecting shielded cables terminated with RJ45
connectors.
Figure 113: 3 phases test setup for the Megger tester
Maximal low-level output from the Megger tester is 40 V at 50/60 Hz
– 80 A/0.150 V maximal simulated current 21.3 kA, 50/60 Hz