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| Miniature circuit breakers and molded case circuit breakers special requirements
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a) miniature circuit breaker to be in line with the "Code for Design of Low
Voltage Distribution" GB50054-1995 requirements,
The requirements of BS
EN60898 and with C-type release characteristics. Molded Case Circuit Breaker
subject
"Code for Design of Low Voltage Distribution" GB50054-1995
requirements, BS EN60947-2's
Requirements, selection of B-type circuit
breakers. Both magnetic circuit breaker for terminal type.
b) more than when
the current in the 60A, MCCB instantaneous circuit protection devices to be
adjustable帧长
Whole.
c) Current leakage protection required for the
action type.
d) if not specified, miniature circuit breakers rated breaking
capacity not less than 6kA, molded case circuit
Device breaking capacity not
less than 22kA.
e) the use of miniature circuit breaker distribution board
will be subject to the "low-voltage power distribution design specifications"
and BS EN
The requirements of 604,393.
f) miniature circuit breaker for
the maximum rated current 100A.
g) MCB polar components required for joint
and internal interlock in order to ensure than any one phase
When the
circuit breakers contained polar solution can be deducted immediately. Circuit
breakers in the installation of three unipolar can not
Mechanical bundled.
h) the protection of distribution lines to all devices to be equipped with
sufficient capacity to ensure that: First of all, the over-current protection
Care to protect equipment; the second, when the switch in any mode, or for
power supply bypass, the
Switching surge and transient voltage lines would
not lead to the solution of logical deduction; otherwise, must be allocated
Preparation of appropriate surge suppression devices, in line with the
"low-voltage power distribution design specifications" within the standards,
IEC61643 1, IEC61051 1 or related recognized standards in order to avoid
equipment affected by these
Current or affected by the instantaneous
voltage.
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