26_45_00 Sandia ( 16269Variable Frequency Controllers)
t; text-indent: 0pt;
">PART
1 - GENERAL
Summary
Furnish and install a complete Variable Frequency Controller (VFC)
system as described in this Section, and as detailed on Drawings.
VFCs will be used to control speed of three-phase variable torque pump
or fan alternating current (AC) induction motors.
Related sections: refer to the following sections for related
work:
Section 01330, Submittal Procedures
Section 01700, Closeout Procedures
Section 13943, Facilities Control Systems
Section 15994, Mechanical Systems Demonstrations
Section 16001, Electrical Work
References
Institute of Electrical and Electronics Engineers (IEEE)
519 Recommended Practices and Requirements for Harmonic Control in
Electrical Power Systems
National Electrical Manufacturers Association (NEMA)
250 Enclosures for Electrical Equipment (1000 Volts Maximum)
ICS 2-222 Overload Relay Class Designation
MG 1 Motors and Generators
National Fire Protection Association (NFPA)
70 National Electrical Code (NEC)
International Electro-technical Commission (IEC)
947-4-1 Low-voltage switchgear and Controlgear, Part 4-1: Contactors
and Motor Starters
Definitions
FCS: Facilities
Control System
FLN(P1): Floor Level
Network (Protocol 1)
IGBT: Integrated
gate bipolar transistor
PI: Proportional
- Integral control action
PWM: Pulse-width
modulated
SDR: Sandia Delegated
Representative
VFC: Variable frequency
controller
Submittals
Equipment Submittals: Submit in accordance with conditions of
Contract and Section 01330, Submittal Procedures, except as
noted herein.
Product Data: For each type of VFC, provide dimensions; mounting
arrangements; location for conduit entries; shipping and operating weights;
and manufacturer's technical data on features, performance, electrical
ratings, characteristics, and finishes.
Shop Drawings: For each VFC:
Include dimensioned plans, elevations, sections, and details, including
required clearances and service space around equipment. Show tabulations
of installed devices, equipment features, and ratings. Include
the following:
Each installed unit's type and details.
Nameplate legends.
Short-circuit current ratings of integrated unit.
Wiring Diagrams: Provide three (3) complete
sets of VFC suppliers standard drawings showing schematics and wiring
for each type of VFC.
Operations and Maintenance Data: Provide three
(3) copies of instruction books, operating manuals, comprehensive trouble
shooting guide, spare parts list and special bulletins covering on-site
storage.
Manufacturer's field service report: Provide three (3) copies of the
field test reports as specified in Part 3.
Load-Current and Overload-Relay Heater List: Compile after motors
have been installed and arrange to demonstrate that selection of heaters
are sized for actual motor nameplate full-load currents.
If VFC is derated, submit derating calculations.
Quality Assurance
Manufacturers Qualifications: Minimum of five years experience
in design and manufacture of VFCs of horsepower, range, and be knowledgeable
in the latest technology specified on Contract Drawings and in this
Section.
Source Limitations: Obtain VFCs of a single type through one source
from a single manufacturer.
Electrical components, devices and accessories shall be labeled and
listed as defined in NFPA 70, Article 100, for intended use.
Storage
Store VFCs indoors in clean, dry space with uniform temperature to
prevent condensation.
Protect VFCs from exposure to dirt, fumes, water, corrosive substances,
and physical damage.
Warranty
Provide manufacturers warranty certificate upon acceptance of VFC
system that shall include the following as a minimum:
If defect in supplied apparatus appears, or failure to comply with
this Section is identified within period of two (2) years from date
of manufacturers certified start-up, not to exceed 30 months from shipment,
response to repair or replacement of VFC shall be within a forty-eight
(48) hour period.
Contractor shall, without delay and at Contractors own expense, correct
defects or failure of compliance by repairing defective parts, supplying
non-defective replacement parts, or correcting defective or deficient
design by any other means recommended by VFC manufacturer and accepted
by SDR.
Maintenance
Furnish extra materials described below that match products installed.
Package with protective covering for storage, and identify with labels
describing contents.
Furnish one spare fuse for every five installed, but not less than
one set of three of each type and rating.
Furnish two spare indicating lights of each type installed.
Furnish one set of spare fans and filters for each size and type of
filter installed in the VFC.