CIRCUIT AND MOTOR DISCONNECTS
PART 1 - GENERAL
1.01 RELATED DOCUMENTS:
A. Drawings and general provisions of Contract, including General and
Supplementary Conditions and Division 1 Specification Sections, apply to
this section.
B. Requirements of the following Division 16 Sections apply to this section:
"Basic Electrical Materials and Methods".
1.02 SUMMARY:
A. This Section includes circuit and motor disconnects
B. Related Sections: the following sections contain requirements that relate to
this section:
1. Division 16 Section “Wiring Devices” for lighting switches used as
motor disconnects.
2. Division 16 Section "Motor Controllers” for combination type starters
which incorporate disconnect switches in the same enclosure as the
starter and manual starters which include the disconnect function as
part of the starter switch assembly.
3. Division 16 Section “LV Circuit Breakers” for moulded case switch,
used as motor or circuit disconnect.
1.03 SUBMITTALS:
A. Product data for each type of product specified
B. Maintenance data for circuit and motor disconnects, for inclusion in
Operation and Maintenance Manual specified in Division 1 and
Division 16 Section “Basic Electrical Materials and Methods.”
1.04 QUALITY ASSURANCE:
A. Compliance with IEC: provide components complying with IEC 408 and
which are listed and labeled by an official testing laboratory or approved
manufacturing standard.
B. Compliance: comply with local Regulations/ Codes applicable and/or with
“IEE Regulations” where not in contradiction.
2
PART 2 - PRODUCTS
2.01 MANUFACTURERS:
A. Available Manufacturers: subject to compliance with requirements,
specifications, design drawings and regulations.
B. For approved manufacturers refer to recommended manufacturers list.
2.02 CIRCUIT AND MOTOR DISCONNECT SWITCHES (SWITCH
DISCONNECTORS):
A. General: provide circuit and motor disconnect switches in types, sizes,
duties, features ratings, and enclosures as indicated and where required by
the Regulations/Code applicable. For motor and motor starter disconnects,
provide units with horsepower ratings suitable to the loads.
B. Rating: 600 V, 2, 3 ,4 or 6 pole, load break, short-circuit make, in
accordance with IEC 947-3, utilization category 22A for heating and
lighting loads, category 23A for motor circuits, and with ampere rating
shown on the Drawings..
C. Design: non-fusible, air-break switch disconnector, single throw, safety
type, housed in separate metallic enclosure with arc quenching devices on
each pole.
D. Operating Mechanism: quick-make, quick-break, independent of operator,
with external operating handle mechanically interlocked to prevent opening
door unless switch is in open position. Switch disconnector is to have
provision for by-passing interlock. Position of handle is to be positive and
clearly indicated on cover.
E. Enclosures: general purpose sheet steel for indoor use IP 41, and weatherproof
type cast metal or sheet steel for outdoor installations IP 54, unless
otherwise required or shown on the Drawings. Locking of operating handle
is to be possible in open and closed positions.
2.03 SPECIAL REQUIREMENTS:
A. Electrical Interlocks:. provide number and arrangement of interlock contacts
in switches where indicated.
B. The contractor is responsible to check the selected disconnecting switches
with its relative feeding motor rating.
PART 3 - EXECUTION
3.01 INSTALLATION OF CIRCUIT AND MOTOR DISCONNECTS:
A. General: provide circuit and motor disconnect switches as indicated and
where required by the Regulations or Code applicable. Comply with switch
manufacturers’ printed installation instructions.
3
3.02 FIELD QUALITY CONTROL:
A. Testing: subsequent to completion of installation of electrical disconnect
switches:
1. Before energization, carry out insulation resistance testing on switch
when in the off position, line side, test load side insulation as
applicable to the load connected.
2. Energize circuits and demonstrate capability and compliance with
requirements. Except as otherwise indicated, do not test switches by
operating them under load. However, demonstrate switch operation
through six opening/closing cycles with circuit unloaded. Open each
switch enclosure for inspection of interior, mechanical and electrical
connections, fuse installation, and for verification of type and rating of
fuses installed correct deficiencies then retest to demonstrate
compliance. Remove and replace defective units with new units and
retest.
END OF SECTION 16170
PART 1 - GENERAL
1.01 RELATED DOCUMENTS:
A. Drawings and general provisions of Contract, including General and
Supplementary Conditions and Division 1 Specification Sections, apply to
this section.
B. Requirements of the following Division 16 Sections apply to this section:
"Basic Electrical Materials and Methods".
1.02 SUMMARY:
A. This Section includes circuit and motor disconnects
B. Related Sections: the following sections contain requirements that relate to
this section:
1. Division 16 Section “Wiring Devices” for lighting switches used as
motor disconnects.
2. Division 16 Section "Motor Controllers” for combination type starters
which incorporate disconnect switches in the same enclosure as the
starter and manual starters which include the disconnect function as
part of the starter switch assembly.
3. Division 16 Section “LV Circuit Breakers” for moulded case switch,
used as motor or circuit disconnect.
1.03 SUBMITTALS:
A. Product data for each type of product specified
B. Maintenance data for circuit and motor disconnects, for inclusion in
Operation and Maintenance Manual specified in Division 1 and
Division 16 Section “Basic Electrical Materials and Methods.”
1.04 QUALITY ASSURANCE:
A. Compliance with IEC: provide components complying with IEC 408 and
which are listed and labeled by an official testing laboratory or approved
manufacturing standard.
B. Compliance: comply with local Regulations/ Codes applicable and/or with
“IEE Regulations” where not in contradiction.
2
PART 2 - PRODUCTS
2.01 MANUFACTURERS:
A. Available Manufacturers: subject to compliance with requirements,
specifications, design drawings and regulations.
B. For approved manufacturers refer to recommended manufacturers list.
2.02 CIRCUIT AND MOTOR DISCONNECT SWITCHES (SWITCH
DISCONNECTORS):
A. General: provide circuit and motor disconnect switches in types, sizes,
duties, features ratings, and enclosures as indicated and where required by
the Regulations/Code applicable. For motor and motor starter disconnects,
provide units with horsepower ratings suitable to the loads.
B. Rating: 600 V, 2, 3 ,4 or 6 pole, load break, short-circuit make, in
accordance with IEC 947-3, utilization category 22A for heating and
lighting loads, category 23A for motor circuits, and with ampere rating
shown on the Drawings..
C. Design: non-fusible, air-break switch disconnector, single throw, safety
type, housed in separate metallic enclosure with arc quenching devices on
each pole.
D. Operating Mechanism: quick-make, quick-break, independent of operator,
with external operating handle mechanically interlocked to prevent opening
door unless switch is in open position. Switch disconnector is to have
provision for by-passing interlock. Position of handle is to be positive and
clearly indicated on cover.
E. Enclosures: general purpose sheet steel for indoor use IP 41, and weatherproof
type cast metal or sheet steel for outdoor installations IP 54, unless
otherwise required or shown on the Drawings. Locking of operating handle
is to be possible in open and closed positions.
2.03 SPECIAL REQUIREMENTS:
A. Electrical Interlocks:. provide number and arrangement of interlock contacts
in switches where indicated.
B. The contractor is responsible to check the selected disconnecting switches
with its relative feeding motor rating.
PART 3 - EXECUTION
3.01 INSTALLATION OF CIRCUIT AND MOTOR DISCONNECTS:
A. General: provide circuit and motor disconnect switches as indicated and
where required by the Regulations or Code applicable. Comply with switch
manufacturers’ printed installation instructions.
3
3.02 FIELD QUALITY CONTROL:
A. Testing: subsequent to completion of installation of electrical disconnect
switches:
1. Before energization, carry out insulation resistance testing on switch
when in the off position, line side, test load side insulation as
applicable to the load connected.
2. Energize circuits and demonstrate capability and compliance with
requirements. Except as otherwise indicated, do not test switches by
operating them under load. However, demonstrate switch operation
through six opening/closing cycles with circuit unloaded. Open each
switch enclosure for inspection of interior, mechanical and electrical
connections, fuse installation, and for verification of type and rating of
fuses installed correct deficiencies then retest to demonstrate
compliance. Remove and replace defective units with new units and
retest.
END OF SECTION 16170
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