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Installation_Guide_SIAB000B0010AA_Rev. 03 23 / 32
8. COMMISIONING
8.1. Thermal resistance
The relay can support, with 3-phase balanced injection, the following values according to
International Standards:
•
10 x Ismin or 2.85xIsmax continuously.
•
20 x Ismin or 5.7 x Ismax for 60 seconds.
•
25 x Ismin or 7.14 x Ismax for 10 seconds.
In the following table the different injection modes are described:
CURRENT
GENERATION
INJECTION
MODE
INJECTION
SYSTEM
RELAY
REAR
CONNECTION
RELAY WITHSTAND ENERGY
WAVEFORM
Single phase
Phase-
Neutral
NOT APPLY
P-N:
Phase-
Phase
P-P:
Three phase
Phase-
Neutral
Balanced (120°)
Un balanced (0°)
P-N Balanced:
P-N Unbalanced:
= 2x
= 3x