Location Component Recommended Model or
Specifications Component
Source Quantity
Smart array
controller
LAN switch (optional) UT-H605 or ES1000
Can be
purchased
from Huawei
1
Fitting
bag for
optical
ring
switching
Low-speed
optical
module FTLF1323P1BTR-HW 2
Optical
jumper PLCLC5S-ST3P302-HW, LC-LC-
S2-L2, 3ECA1031LCLC002-01-F,
or LP-LP-2S-P-SM-002 8
Box-type
transformer
Miniature circuit
breaker (MCB) Recommended rated current: 32 A;
number of poles: 2
Prepared by
the customer
1
Three-
phase
power
switch
Knife fuse
switch
(solution 1)
When the rated AC voltage on
the low-voltage side of the box-
type transformer is less than or
equal to 500 V, the rated voltage
of the knife fuse switch should
be greater than or equal to 500
V.
When the rated AC voltage on
the low-voltage side of the box-
type transformer is greater than
500 V and less than or equal to
800 V, the rated voltage of the
knife fuse switch should be
greater than or equal to 800 V.
Recommended rated current of
the fuse: 32 A; rated current of
the knife fuse switch box ≥ 32 A;
number of poles: 3 (3 fuses for
each knife fuse switch box)
Scenario
with a
double-
column
transformer:
1
Scenario
with a dual-
split
transformer:
2
MCCB
(solution 2)
When the rated AC voltage on
the low-voltage side of the box-
type transformer is less than or
equal to 500 V, the rated voltage
of the molded case circuit
breaker (MCCB) should be
greater than or equal to 500 V.
When the rated AC voltage on
the low-voltage side of the box-
type transformer is greater than
500 V and less than or equal to
800 V, the rated voltage of the
MCCB should be greater than or
equal to 800 V.
Let-through energy ≤ 1.26 x 106
A2s
Recommended rated current: 32
A; number of poles: 3
The following table describes the components to be configured in the fiber ring networking scenario.
6
Select either an MCCB or a knife fuse switch as the three-phase power switch. If you select an
MCCB, ensure that the let-through energy of the MCCB meets requirements. The breaking
capacity depends on the limited short-circuit current on the low voltage side of the box-type
transformer.
Models of the components inside the box-type transformer are specified by the box-type
transformer vendor.
