1 Scope

NOTE This Standard covers low-voltage (600 V and below) pulse-width-modulated variable frequency drives furnished as individually mounted, enclosed units for adjustable-speed control of three-phase AC induction and permanent-magnet motors. (1.1)

NOTE Covered applications include process pumps, process fans, compressors, conveyors, mixers, water and wastewater treatment equipment, and general industrial, institutional, and municipal motor loads specified under the electrical division rather than embedded in a mechanical or process equipment specification. (1.2)

NOTE The scope spans drives from fractional horsepower through at least 500 HP, in wall-mount and floor-mount configurations, NEMA 1 through NEMA 4X enclosures, indoor and outdoor installations, and both variable-torque and constant-torque duty ratings. (1.3)

1.4 Each drive provided under this Standard shall be a complete adjustable-speed power drive system listed to UL 61800-5-1, including its converter, DC link, inverter, control, enclosure, and integral accessories.

1.5 The work of this Standard includes input protection, harmonic mitigation, optional bypass arrangements, fieldbus and network communication, output filtering for motor cable compatibility, and field acceptance testing.

NOTE HVAC fan and pump drives specified under the mechanical division are excluded and are governed by HVAC Variable Frequency DrivesHVAC Variable Frequency DrivesResolves to the current edition.sync/hvac-variable-frequency-drives. (1.6)

NOTE VFD units furnished as plug-in bucket contents within a motor control center assembly are excluded; the MCC assembly, bus structure, and compartment construction are governed by Motor Control CentersMotor Control CentersResolves to the current edition.sync/motor-control-centers, which defers drive performance back to this Standard. (1.7)

NOTE Medium-voltage drives operating above 600 V are excluded; they fall outside the UL 61800-5-1 low-voltage listing and require a separate medium-voltage drive specification. (1.8)

NOTE Drives integral to factory-packaged process equipment — packaged pump skids, chillers, and compressor packages — are excluded and are governed by the respective equipment specification. (1.9)

NOTE Conductors and cables between the drive output and the motor terminals are excluded; their sizing, insulation class, and shielding are governed by Conductors And CablesConductors and CablesResolves to the current edition.sync/conductors-and-cables. (1.10)

NOTE Feeder and branch-circuit panelboard distribution upstream of the drive is excluded and is governed by PanelboardsPanelboardsResolves to the current edition.sync/panelboards. (1.11)

2 Referenced Standards

2.1 Equipment, materials, and installation shall comply with the latest adopted edition of each of the following unless a specific edition is cited.

2.2 Where referenced standards conflict, the more stringent requirement shall govern unless the Engineer of Record directs otherwise in writing.

Standard	Title
UL 61800-5-1	Adjustable Speed Electrical Power Drive Systems — Electrical, Thermal and Energy Safety Requirements
UL 508A	Industrial Control Panels
NFPA 70	National Electrical Code (Articles 409 and 430)
NEMA ICS 7	Adjustable-Speed Drives
NEMA 250	Enclosures for Electrical Equipment (1000 Volts Maximum)
NEMA MG 1	Motors and Generators (Part 31 — Definite-Purpose Inverter-Fed Motors)
IEEE 519	Standard for Harmonic Control in Electric Power Systems
IEC 61800-3	Adjustable Speed Electrical Power Drive Systems — EMC Requirements and Test Methods
IEC 61800-5-2	Adjustable Speed Electrical Power Drive Systems — Functional Safety Requirements
IEC 61800-9-2	Adjustable Speed Electrical Power Drive Systems — Energy Efficiency Indicators for Power Drive Systems
NETA ATS	Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems
ASHRAE 90.1	Energy Standard for Buildings Except Low-Rise Residential Buildings
ASCE 7	Minimum Design Loads and Associated Criteria for Buildings and Other Structures

NOTE UL 508C, the historical listing standard for power conversion equipment, was withdrawn and superseded by UL 61800-5-1 effective February 28, 2020. (2.3)

2.4 Specifications and submittals shall reference UL 61800-5-1 and shall not cite UL 508C.

NOTE The three IEC 61800 parts referenced above have no ANSI or UL equivalent for EMC categories, functional-safety integrity levels, or power drive system efficiency classes, and US drive manufacturers publish these designations in their North American catalog data; they are cited here for that reason. (2.5)

3 Submittals

3.1 Action Submittals

3.1.1 The Contractor shall submit the following action submittals for review before fabrication or release of the drives:

Product data sheets for each drive, including catalog rating, listing, efficiency class, and accessory complement.
Shop drawings showing enclosure dimensions, weight, conduit entry locations, internal device layout, and nameplate schedule.
Wiring and interconnection diagrams showing power, control, and network terminations.
Drive schedule correlating each tag to motor nameplate data, duty type, enclosure type, and mitigation and bypass options.
IEEE 519 harmonic analysis demonstrating compliance at the designated point of common coupling.
Short-circuit current rating (SCCR) documentation for each enclosed drive assembly.
Seismic anchorage calculations and certification for floor-mounted enclosures where required by the seismic design category.

Action submittals required before fabricationcheckbox

☑ Product data sheets (rating, listing, efficiency)

☑ Shop drawings (enclosure, layout, nameplates)

☑ Wiring and interconnection diagrams

☑ Drive schedule (motor data, duty, enclosure)

☑ IEEE 519 harmonic analysis

☑ SCCR documentation

☐ Seismic anchorage calculations and certification

3.2 Informational Submittals

3.2.1 The Contractor shall submit the following informational submittals for the record:

Manufacturer certification of UL 61800-5-1 listing for each drive.
Manufacturer certification of NEMA MG 1 Part 31 output compatibility analysis, including motor cable length limits and any required output filtering.
Ambient temperature and altitude derating documentation for the installed site conditions.
Functional safety certification for drives furnished with Safe Torque Off, where specified.

Informational submittals required for the recordcheckbox

☑ UL 61800-5-1 listing certification

☑ NEMA MG 1 Part 31 output compatibility analysis

☑ Derating documentation (ambient and altitude)

☐ Functional safety (STO) certification

3.3 Closeout Submittals

3.3.1 The Contractor shall submit the following closeout submittals before final acceptance:

Field acceptance test reports per NETA ATS, including insulation resistance and functional verification.
As-left parameter records for each drive, listing every adjusted setting.
Operation and maintenance manuals, including troubleshooting and fault-code references.
Manufacturer warranty documentation.

Closeout submittals required before final acceptancecheckbox

☑ NETA acceptance test reports

☑ As-left parameter records

☑ Operation and maintenance manuals

☑ Warranty documentation

4 Quality Assurance

4.1 Each drive shall be listed by a Nationally Recognized Testing Laboratory to UL 61800-5-1.

4.2 Each drive shall bear the listing mark of the Nationally Recognized Testing Laboratory that listed it.

4.3 The manufacturer shall regularly produce adjustable-speed drives of the type and rating specified, with a documented production history of not less than five years.

4.4 The drive shall be designed and rated in accordance with NEMA ICS 7 for adjustable-speed drives.

4.5 Where the drive is furnished as an enclosed industrial control panel, the assembly shall comply with the applicable construction and marking requirements of NEC Article 409 and UL 508A.

4.6 Field test personnel shall be qualified to perform acceptance testing in accordance with NETA ATS.

5 Ratings and Performance

5.1 Voltage and Horsepower

5.1.1 The drive system voltage and horsepower or kW rating shall match the connected motor nameplate, accounting for service factor where the motor is operated continuously above nameplate.

5.1.2 Each drive shall be rated for continuous operation at the connected motor full-load current at the installed ambient and altitude.

5.1.3 The drive system voltage shall be as indicated in the datasheet.

System voltagerange

V

208240480600

Per drawings — one-line diagram (deferred by default)

5.1.4 The drive continuous output rating shall be as indicated in the datasheet.

Drive continuous output ratingrange

HP

0.5500

Per drawings — motor and drive schedule (deferred by default)

5.1.5 The maximum rated output frequency shall be as indicated in the datasheet.

Maximum rated output frequencyrange

Hz

30506090120200400

NOTE 60 Hz is the North American norm for a motor operated at its nameplate base speed and is the datasheet default; 50 Hz base-speed motors and over-speed applications running above base frequency are both real selections, and a drive operated above base frequency delivers constant horsepower with falling torque. (5.1.6)

5.2 Duty Type and Overload

5.2.1 The drive overload rating shall match the load torque characteristic. Variable-torque loads (centrifugal pumps and fans) require only modest overload; constant-torque and high-starting-torque loads (conveyors, positive-displacement pumps, compressors, mixers) demand sustained and instantaneous overload margin.

NOTE Applying a variable-torque-rated drive to a constant-torque load causes nuisance overload trips or drive damage under high starting torque. (5.2.2)

5.2.3 The duty type shall be confirmed against the actual load torque characteristic before the drive is sized.

5.2.4 A drive serving a variable-torque load shall provide not less than 110% of rated output current for 60 seconds.

5.2.5 A drive serving a constant-torque load shall provide not less than 150% of rated output current for 60 seconds.

5.2.6 A drive serving a high-starting-torque load shall provide not less than 150% of rated output current for 60 seconds and 175% instantaneous current.

5.2.7 The duty type shall be as indicated in the datasheet.

Duty typeradio

○ Variable torque (110% for 60 s)

○ Constant torque (150% for 60 s)

○ Heavy duty / high starting torque (150% for 60 s, 175% instantaneous)

NOTE The duty type is a property of the driven machine rather than of the drive, and this Standard covers centrifugal and positive-displacement loads in comparable numbers, so the field carries no default. (5.2.8)

5.3 Efficiency

5.3.1 The complete power drive system (motor plus drive) shall meet the efficiency provisions applicable to the project under ASHRAE 90.1.

5.3.2 The variable-speed control thresholds applied to pumps and fans under ASHRAE 90.1 shall be documented in the action submittal.

5.3.3 The drive shall meet not less than the IEC 61800-9-2 power drive system efficiency class indicated in the datasheet.

Minimum power drive system efficiency class (IEC 61800-9-2)radio

○ IE1

● IE2

NOTE IE2 is the datasheet default because it is the class the current generation of general-purpose drives reaches without a cost premium; IE1 remains available for retrofit and replacement-in-kind work where an existing drive family must be matched. (5.3.4)

6 Environmental and Service Conditions

6.1 Enclosure Type

6.1.1 The drive enclosure type shall be selected for the actual installed environment per NEMA 250.

NOTE Enclosure cost, size, and cooling capacity differ substantially between types, so over- and under-specification both carry consequences. Specifying a NEMA 1 drive where the environment exposes it to water spray, washdown, dust, or condensation causes premature failure and warranty dispute. (6.1.2)

6.1.3 The enclosure rating shall reflect the worst-case service condition at the device location.

6.1.4 The drive enclosure shall be as indicated in the datasheet and shall maintain its rating with all field-installed conduit entries and accessories in place.

Enclosure type (NEMA 250)radio

○ NEMA 1 (indoor, clean)

○ NEMA 12 (indoor, dust and dripping liquid)

○ NEMA 3R (outdoor, rain)

○ NEMA 4 (washdown, hose-directed water)

○ NEMA 4X (corrosive, stainless or nonmetallic)

NOTE This Standard covers clean indoor electrical rooms, process areas subject to washdown, and outdoor installations in comparable numbers, so no enclosure type is correct for every project and the field carries no default. (6.1.5)

6.1.6 The mounting configuration shall be as indicated in the datasheet.

Mounting configurationradio

○ Wall mount

○ Floor mount (freestanding)

Per drawings — electrical plan (deferred by default)

6.2 Ambient and Altitude

NOTE Standard drives are rated for a maximum ambient of 40°C at altitudes up to 3300 ft; output current capacity falls at higher ambient and elevation. (6.2.1)

NOTE Above 3300 ft a typical drive loses approximately 1% of rated current per 330 ft of additional elevation; high-altitude sites are frequently overlooked and require derating or cooling accessories. (6.2.2)

6.2.3 The drive shall be rated for the maximum design ambient temperature indicated in the datasheet without exceeding its current rating.

6.2.4 Where the ambient exceeds the drive's standard rating, the drive shall be upsized or provided with supplemental cooling.

Maximum design ambient temperaturerange

°C

40455055

NOTE 40°C is the standard rating reference for enclosed drives and is the datasheet default; it is a rating basis rather than a measured room temperature, and it is raised only where the installed location is known to run hotter. (6.2.5)

6.2.6 The drive shall be derated or otherwise compensated for the installation altitude indicated in the datasheet so that it delivers full motor full-load current at the site elevation.

Installation altituderange

ft

330066001000012000

NOTE Site elevation is a project fact rather than a specification choice, and a wrong assumed elevation silently undersizes the drive, so the field carries no default. (6.2.7)

7 Input Power and Protection

7.1 Input Disconnect and Branch-Circuit Protection

NOTE Adjustable-speed drives are governed by NEC Article 430 Part X; the supply conductors are sized at not less than 125% of the rated drive input current, which differs from a standard motor branch circuit sized on motor full-load current. (7.1.1)

NOTE Drive input overcurrent protection sized on the drive input current rather than the motor full-load current per NEC 430.52 is a common error that leaves the drive either over-fused or under-fused. (7.1.2)

7.1.3 The branch-circuit protective device ahead of the drive shall be coordinated to the sizing rule of NEC Article 430 that applies to the installation.

7.1.4 Branch-circuit short-circuit and ground-fault protection ahead of the drive shall be selected and sized in accordance with NEC Article 430.

7.1.5 A disconnecting means shall be provided for the drive in accordance with NEC Article 430, located within sight of the drive or provided with a lockable disconnect.

7.1.6 The integral input disconnect arrangement shall be as indicated in the datasheet.

Integral input disconnectradio

○ None (external disconnect by others)

○ Non-fusible disconnect switch

○ Fusible disconnect switch

○ Molded-case circuit breaker

Per drawings — one-line diagram (deferred by default)

7.1.7 The marked short-circuit current rating of the enclosed drive assembly, including integral disconnect, fusing, reactors, and bypass where furnished, shall equal or exceed the available fault current at the point of installation.

Minimum assembly short-circuit current rating (SCCR)range

kA

510141822253035425065100200

NOTE The required rating is the first standard interrupting rating at or above the available fault current at the drive, which is an output of the project's short-circuit study, so the field carries no default. (7.1.8)

7.2 Input Power Quality Accessories

NOTE Input accessories protect the drive from supply transients and reduce conducted disturbances back onto the source; the complement is selected from the supply impedance and the sensitivity of co-located equipment. (7.2.1)

7.2.2 Each drive shall be provided with the input power-quality accessories indicated in the datasheet, coordinated with the harmonic mitigation method so that reactors and chokes are not duplicated.

Input power quality accessoriescheckbox

☑ AC line reactor

☐ DC link choke

☐ Input EMC / RFI filter

☐ Transient voltage surge suppressor (TVSS)

8 Harmonic Mitigation

NOTE The drive rectifier draws nonsinusoidal current that injects harmonic distortion onto the supply; without a study and a specified mitigation method, the contractor quotes the cheapest (no mitigation) option, risking utility non-compliance and interference with neighboring loads. (8.1)

8.2 The harmonic mitigation method shall be specified by the Engineer of Record and shall not be left to the Contractor to determine in the field.

8.3 An IEEE 519 harmonic analysis shall be performed for the installation and shall demonstrate that current and voltage distortion at the designated point of common coupling are within the limits of the standard.

8.4 The harmonic mitigation method selected shall achieve the IEEE 519 distortion limits at the point of common coupling under the project's worst-case operating condition.

8.5 The point of common coupling for the analysis shall be as indicated on the one-line diagram.

8.6 The harmonic mitigation method shall be as indicated in the datasheet.

Harmonic mitigation methodradio

○ None

○ 3% AC line reactor

○ 5% AC line reactor

○ DC link choke

○ Passive harmonic filter

○ Active harmonic filter

○ 12-pulse drive topology

○ 18-pulse drive topology

○ Active front end (regenerative)

NOTE The mitigation method is an output of the project's IEEE 519 study, and a small drive on a stiff service may legitimately need none while a drive farm on a generator-backed bus may need an active front end, so the field carries no default. (8.7)

8.8 Current distortion at the point of common coupling shall not exceed the total demand distortion limit given by IEEE 519 for the short-circuit ratio at that point, and shall not exceed the limit indicated in the datasheet where a more stringent limit is required.

Maximum total demand distortion (current) at PCCrange

%

58121520

8.9 Voltage distortion at the point of common coupling shall not exceed the total harmonic distortion limit given by IEEE 519 for the voltage level at that point, and shall not exceed the limit indicated in the datasheet where a more stringent limit is required.

Maximum total harmonic voltage distortion at PCCrange

%

1.52.5358

NOTE Both distortion limits are read from the IEEE 519 tables for the actual short-circuit ratio and system voltage at the point of common coupling, so neither field carries a default; the datasheet entry records the value the study establishes or a stricter owner limit. (8.10)

9 Output and Motor Compatibility

9.1 Motor Cable Length and Output Filtering

NOTE A PWM drive produces fast-rising voltage pulses; on long motor cables these pulses reflect at the motor terminals and can double, producing peak voltages that stress the motor insulation. (9.1.1)

NOTE NEMA MG 1 Part 31 inverter-duty motors withstand up to 1600 V peak, but non-inverter-duty motors may not, and the threshold cable length depends on the drive switching frequency. (9.1.2)

NOTE Failing to specify a motor cable length limit or output filter is a frequent omission; the resulting reflected-wave overvoltage can exceed the motor insulation rating and cause early winding failure. (9.1.3)

9.1.4 The maximum motor cable length and the corresponding output filter shall be established from a NEMA MG 1 Part 31 compatibility analysis for each drive and motor pair.

9.1.5 Where the connected motor is not rated for inverter duty, output filtering shall be provided to limit the terminal peak voltage and rate of voltage rise to within the motor insulation withstand.

9.1.6 The output filter shall be as indicated in the datasheet.

Output filterradio

○ None (bare cable, short run)

○ dV/dt filter

○ Output line reactor

○ Sine-wave filter

NOTE The filter follows from the compatibility analysis — cable length, carrier frequency, and whether the motor is inverter-duty rated — so no filter selection is correct for every project and the field carries no default. (9.1.7)

9.1.8 The maximum unfiltered motor cable length shall be as indicated in the datasheet.

Maximum motor cable length (unfiltered)range

ft

25501002004006001000

NOTE The cable length limit is a property of the installed run and of the drive and motor pair, so the field carries no default and is filled from the compatibility analysis. (9.1.9)

9.1.10 The drive carrier frequency shall be as indicated in the datasheet.

Drive carrier (switching) frequencyrange

kHz

12481216

9.1.11 The manufacturer's standard carrier frequency for the drive rating is acceptable; a higher carrier reduces audible motor noise but shortens the permissible cable length and derates the drive, and a lower carrier does the reverse. The as-left carrier frequency shall be recorded in the parameter record submitted at closeout.

9.2 Motor Protection

9.2.1 The drive shall provide electronic motor overload protection in accordance with NEC Article 430 for the connected motor.

9.2.2 The drive shall provide motor thermal protection and shall accept a motor thermistor or thermal switch input where the motor is so equipped.

10 Bypass

NOTE A bypass connects the motor directly across the line when the drive is unavailable, preserving operation of life-safety and process-critical loads; it is selected from the criticality of the load. (10.1)

NOTE In bypass mode the motor runs across the line at full speed, so the drive's electronic overload is out of the circuit — an omission that commonly surfaces at startup. (10.2)

10.3 The bypass arrangement shall be as indicated in the datasheet.

Bypass configurationradio

● None

○ Manual bypass (selector switch, across-the-line)

○ Automatic bypass (output contactor and transfer logic)

NOTE Most process drives are not bypassed, because bypass operation runs the load at full speed and defeats the reason the drive was installed; bypass is reserved for loads whose continued operation matters more than speed control, so the field defaults to none. (10.4)

10.5 Where bypass is provided, a motor running overload relay shall be furnished in the bypass path to protect the motor when it is operated across the line.

10.6 Where automatic bypass is provided, an output contactor and transfer logic shall be furnished to transfer the motor between drive and line operation.

11 Control and Communication

11.1 Control Interface

11.1.1 The drive shall provide a control terminal strip for speed reference, start and stop, and fault signaling.

11.1.2 The drive shall provide an operator keypad with local and remote control selection and fault display.

11.1.3 The drive shall accept the analog speed reference signal indicated in the datasheet.

Analog speed reference inputradio

○ 0-10 VDC

● 4-20 mA

○ 0-20 mA

○ ±10 VDC (bidirectional)

○ None — speed commanded over the network

NOTE A 4-20 mA current loop is the default because it is immune to the voltage drop and induced noise that corrupt a voltage reference over the cable lengths typical of process installations. (11.1.4)

11.1.5 The drive shall be furnished with not less than the discrete input and relay output complement indicated in the datasheet.

Discrete (digital) input countrange

inputs

212

Form C relay (digital) output countrange

outputs

16

NOTE The manufacturer's standard onboard input and output complement is acceptable for a drive under simple start/stop and speed-reference control; an explicit count is entered only where the sequence of operations needs more points than the base drive provides. (11.1.6)

11.2 Network Communication

11.2.1 The fieldbus protocol shall match the building automation system or SCADA system; specifying a protocol the control system does not speak forces field rewiring or protocol converters after installation.

11.2.2 The network protocol shall be coordinated with the building automation or process control contractor before the drives are released for fabrication.

11.2.3 The drive shall be furnished with the network communication interface indicated in the datasheet, with all addressing and configuration coordinated with the controlling system.

Network communication protocolradio

○ None

○ Modbus RTU

○ Modbus TCP

○ BACnet MS/TP

○ BACnet/IP

○ PROFIBUS

○ PROFINET

○ EtherNet/IP

○ DeviceNet

○ EtherCAT

NOTE The protocol is fixed by the controlling system rather than by the drive — BACnet dominates building automation, EtherNet/IP and PROFINET dominate industrial control, and Modbus persists across both — so the field carries no default. (11.2.4)

11.3 Functional Safety

NOTE Machinery applications increasingly require a SIL-rated Safe Torque Off function under machinery safety standards and lockout/tagout practice, and retrofitting STO after equipment selection is costly. (11.3.1)

11.3.2 The Safe Torque Off requirement shall be established at specification rather than deferred to the drive submittal.

11.3.3 Where Safe Torque Off is specified, the drive shall provide a Safe Torque Off function listed to IEC 61800-5-2 at the safety integrity level indicated in the datasheet.

Safe Torque Off (STO) per IEC 61800-5-2radio

○ Not required

○ STO, SIL 2 / PLd

○ STO, SIL 3 / PLe

NOTE The required integrity level comes from the machinery risk assessment for the driven equipment, and STO is now standard rather than optional on much of the drive market, so the field carries no default. (11.3.4)

11.4 Electromagnetic Compatibility

11.4.1 The drive installation shall meet the EMC immunity and emission requirements of IEC 61800-3 for the category appropriate to the installation environment.

11.4.2 The drive shall meet not less than the IEC 61800-3 emission category indicated in the datasheet.

Minimum IEC 61800-3 EMC categoryradio

○ C1 (first environment, residential)

● C2 (first environment, restricted)

○ C3 (second environment, industrial)

○ C4 (second environment, high power or IT network)

NOTE C2 is the datasheet default because it is the practical minimum wherever the drive shares a service with commercial or institutional loads; C3 and C4 apply to dedicated industrial supplies where no sensitive equipment shares the source, and C1 to the rare drive on a residential service. (11.4.3)

12 Source Quality Control

12.1 Each drive shall be factory tested before shipment, including a functional power-on test of the control, protection, and communication features.

12.2 Drives furnished as factory-assembled combination packages — input reactor, output filter, and bypass in one enclosure — shall be assembled and wired at the factory and shipped as a tested unit.

13 Installation

13.1 The drive shall be installed in accordance with the manufacturer's published instructions and NEC Articles 409 and 430.

13.2 The drive shall be mounted to maintain the manufacturer's required clearances for cooling airflow and service access.

13.3 Floor-mounted drive enclosures in applicable seismic design categories shall be anchored and braced in accordance with ASCE 7 and the project structural requirements.

13.4 Drive locations shall be as indicated on the electrical plans.

13.5 Conduit entry locations shall be as indicated on the approved shop drawings.

13.6 Input, output, and control conductors shall be terminated to the manufacturer's torque values, and shielded motor cable shall be terminated to maintain shield continuity.

NOTE On generator-backed projects, simultaneous starting of multiple drives can exceed the generator kVA rating; this is a frequent commissioning-discovered issue. (13.7)

13.8 The drive starting sequence on standby generator power shall be coordinated with the transfer and generator system so that connected drives start within the generator's capability.

14 Testing

14.1 Field acceptance testing shall be performed in accordance with NETA ATS for adjustable-speed drives.

14.2 Insulation resistance of the motor and motor circuit shall be measured and recorded before energizing the drive.

14.3 Each drive shall be functionally verified for speed reference response, start and stop, fault and bypass operation, and network communication.

14.4 Where an IEEE 519 compliance threshold is specified, harmonic current and voltage distortion shall be measured at the point of common coupling and recorded.

14.5 All adjusted parameters shall be recorded as as-left settings and submitted with the test report.

14.6 The field acceptance tests to be performed shall be as indicated in the datasheet.

Field acceptance tests requiredcheckbox

☑ Insulation resistance (motor and circuit)

☑ Functional verification (speed, start/stop, fault)

☐ Bypass transfer verification

☑ Network communication verification

☐ Harmonic measurement at PCC

☑ As-left parameter record

15 Identification

15.1 Each drive enclosure shall be provided with an engraved nameplate carrying the content indicated in the datasheet.

Nameplate engraving contentcheckbox

☑ Drive tag / designation

☑ Served equipment designation

☑ Voltage and horsepower

☐ Source feeder designation

15.2 Each drive shall bear a permanent warning label identifying the stored-energy hazard and the discharge time before the enclosure may be opened.

16 Delivery, Storage, and Handling

16.1 Drives shall be delivered in the manufacturer's original packaging, protected from moisture, dust, and physical damage.

16.2 Drives shall be stored indoors in a clean, dry, temperature-controlled space within the manufacturer's storage temperature range until installed.

16.3 Drives containing electrolytic DC-link capacitors that have been stored longer than the manufacturer's shelf limit shall be reformed in accordance with the manufacturer's instructions before energizing.

17 Warranty

17.1 The manufacturer shall warrant each drive against defects in materials and workmanship for not less than the period indicated in the datasheet, measured from the date of substantial completion.

Manufacturer warranty periodrange

months

1218243660

18 Spare Parts

18.1 The Contractor shall furnish the spare parts indicated in the datasheet, packaged and labeled for the served drives:

Spare control and cooling fans of each type used.
Spare input fuses of each rating used, where the drive is fused.
One spare operator keypad where keypads are removable.

Spare parts to be furnishedcheckbox

☑ Cooling and control fans (each type)

☑ Input fuses (each rating)

☐ Operator keypad