hager h3+, Инструкция по эксплуатации системы связи

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6LE005550A
Function of the Energy trip unit
3.2 Protection function
3.2.1
Long time delay protection
Long time delay protection is designed to protect against current overloads on
conductors and receivers in all electrical power distribution applications.
The long time delay protection has an inverse time protection function including
a thermal imaging function.
Long time delay protection settings
In (A)
t (s) L
tr
lr
Long time delay protection
Long time delay parameters
L
Ir Long time delay protection threshold
tr Long time delay
lr threshold setting
The long time delay protection trip range is: 1.05...1.20 Ir according to standard
IEC 60947-2.
The trip threshold tolerance Ir for the long time delay protection is +5% to +20%.
The Ir threshold is firstly set using the Ir max adjustment dial, then, if necessary,
from the embedded display to facilitate fine adjustments in increments of 1 A.
Rating (In) Ir max threshold setting range (A) / Ir threshold fine adjustment range (A)
40 A
Ir max 16 Ir max 25 Ir max 32 Ir max 40 -
16 - 16 16 - 25 16 - 32 16 - 40 -
100 A
Ir max 40 Ir max 63 Ir max 80 Ir max 100 -
40 - 40 40 - 63 40 - 80 40 - 100 -
160 A
Ir max 63 Ir max 80 Ir max 100 Ir max 125 Ir max 160
63 - 63 63 - 80 63 - 100 63 - 125 63 - 160
250 A
Ir max 100 Ir max 125 Ir max 160 Ir max 200 Ir max 250
100 - 100 100 - 125 100 - 160 100 - 200 100 - 250
Adjusting the tr time delay
The tr time delay defines the trip time of the long time delay protection for a current
of 6 x Ir.
The tr time delay can be adjusted from the embedded display, the panel display or
the h3+ configuration tool.