9

KEY BENEFITS Q

Q

Q

Q

Q Q

Q

Unique and advanced protection features - Back-spin detection, advanced thermal model, most advanced thermal model including multiple RTD inputs for stator thermal protection Complete asset monitoring - stator, bearing & ambient temperature, optional full metering including demand & energy Improve uptime of auxiliary equipment - Through I/O monitoring Reduce troubleshooting time and maintenance costs Event reports, waveform capture, data logger Simplify testing - Built in simulation features Multiple communication protocols - Modbus RTU, Profibus, Device Net Cost Effective Access information - Through standard RS232 & RS485 serial ports, and optional embedded Ethernet and Profibus Ports

Q

Q

Q

Q

Q

Q

Multiple communication ports - RS232, RS485, and Fiber Optic and Ethernet Follow technology evolution - Flash memory for product field upgrade Long lasting life - When exposed to chemically corrosive and humid environments with optional conformal coating Suitable for hazardous locations - Underwriters Laboratory certification for Class 1 Division 2 applications Installation flexibility - Remote display and remote RTD option Safe and reliable motor re-start on "Down Hole" pump applications - Unique back spin detection feature detects flow reversal on a pump motor, enabling timely and safe motor restarting

APPLICATIONS Q Q

Medium size motors "Down Hole" pump applications

Q

Suitable for applications involving Variable Frequency Drives

FEATURES Protection and Control Q

Q Q Q Q Q Q Q Q Q Q Q Q

Thermal model biased with RTD and negative sequence current feedback Phase short circuit Undervoltage, overvoltage Underfrequency Thermal overload Undercurrent for load loss Locked rotor / mechanical jam Variable lockout time Current unbalance Ground fault O/C Overtemperature 12 RTDs (R) Starts/hour, time between starts Phase Reversal (M)

Monitoring and Metering Q Q Q Q Q Q Q

Full metering: A V W var VA PF Hz Wh varh demand Fault diagnosis Event record Statistical information & learned motor data Voltage/frequency/power display (M) 4 analog outputs (M) Oscillography & Data Logger

Inputs and Outputs Q Q Q Q

12 RTDs, programmable 5 assignable digital inputs 4 output relays 4 programmable analog outputs

User Interface Q Q Q Q Q Q Q Q

Front Panel 10 LEDs, key pad, and backlit LCD display RS232, and RS485 ports - up to 19,200 bps Optional embedded Ethernet port Optional Profibus Protocol via dedicated port ModBus™ RTU Protocol ModBus™ over TCP/IP Optional Device Net Protocol Includes EnerVista software

219

369 Motor Protection System

A unique feature of the 369 is its ability to compute the motor I2t value based on actual motor load current. The thermal model calculates this value in terms of thermal capacity used. The RTDs measuring the stator temperature act as a thermal capacity check to confirm the value calculated by the thermal model. The thermal capacity used is then updated to reflect the higher of the two values. This accounts for heat due to I2t as well as motor heating due to loss of cooling or extreme ambient temperatures.

The 369 is a digital relay designed to provide complete and accurate protection and monitoring for three phase industrial motors and their associated mechanical systems. The 369 offers optimum protection including:

Start and Running

9

The motor is protected under both acceleration and running conditions. An alarm or trip may occur based on acceleration time, the number of starts per hour, the time between starts, or motor overload conditions.

Overload Curves

10,000

1,000

TRIP TIME (seconds)

Protection

One of the fifteen standard overload curves may be programmed based on motor manufacturer specifications. Alternatively the user may program in a custom curve using the built-in FlexCurve™ function. The motor's service factor value is entered as the overload pickup level.

Thermal Modeling The primary protection function of the 369 is the thermal model with six key elements: Q Overload Curves Q Unbalance Biasing Q Hot/Cold safe stall ratio Q Start inhibit and emergency restart Q RTD biasing

BUS

METERING V, W, Var, VA, PF, Hz

55

V 27

47

4 ISOLATED ANALOG OUTPUTS

59

TRIP

AUXILIARY RELAY

51

37

66

METERING A, Celsius

46

OPTION ( B ) BACKSPIN DETECTION

RTDs

SPEED DEVICE INPUTS LOAD

MOTOR

87

DIFFERENTIAL RELAY CONTACTS

BLOCK START

14

Full Load Setpoint

1

10

PHASE CURRENT (multiples of full load)

81 86 87

PROTECTION Speed switch Undervoltage/Overvoltage Undercurrent/Underpower Bearing RTD Current Unbalance Phase Reversal Stator RTD Short circuit and short circuit backup Ground overcurrent and ground overcurrent backup Overload Power factor Starts/hour and time between starts Frequency Overload lockout Differential

86

369 Motor Management System

SERVICE

RS232 87

RS485 RS485 RS485

Comm. to RTD module

BEARING STATOR

START

CONTROL

51G 50G 14

1

0.1

51 55 66

52a/b

AMBIENT AIR

1

50G/51G

74 ALARM RELAY

50

2

14 27/59 37 38 46 47 49 50

OPTIONAL METERING (M)

3

3

DEVICE

50 50G

BREAKER OR FUSED CONTACTOR

4

819765A8.cdr

BACKUP

V

CURVE 15 12 9 7

10

Fifteen standard overload curves.

Functional Block Diagram 52

100

OPTIONAL RTD ( R ) 12 RTD INPUTS

49

38

AMBIENT

(Fiber Optic) (Option F)

REMOTE RTD MODULE (12 RTD INPUTS)

STATOR BEARING AMBIENT 840701B2.cdr

220

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369 Motor Protection System

FlexCurve™

Ground Overcurrent

A smooth custom overload curve is created within a selected range using FlexCurve™. This curve can be used to protect motors with different rotor damage and stator damage curves, allowing total motor design capacity with complete protection.

For zero sequence ground overcurrent protection, all three of the motor conductors must pass through a separate ground CT. CTs may be selected to detect either high-impedance zero sequence ground or residual ground currents. The ground fault trip can be instantaneous or time delayed by up to 255 seconds. A low level of ground fault pickup is desirable to protect as much of the stator winding as possible. A 50:0.025 A CT, 1 A or 5 A CT may be used for ground fault detection.

6500 HP, 13800 Volt INDUCED DRAFT FAN MOTOR 10000

1 PROGRAMMED 369 CUSTOM CURVE 2 RUNNING SAFETIME (STATOR LIMITED) 3 ACCELERATION SAFETIME (ROTOR LIMITED) 4 MOTOR CURRENT @ 100% VOLTAGE

1000

5 MOTOR CURRENT @ 80% VOLTAGE

predict the pump stop time. An underpower element trips the motor in case of loss of fluid to the pump (which also cools the motor). The metering option (M) is included in the BSD (B) option. THERMAL CAPACITY USED 100%

75%

50%

25%

Rapid Trip/Mechanical Jam

1

RTD BIAS CENTER T.C.

15%

MAXIMUM STATOR TEMPERATURE

Quick motor shut down can reduce damage to gears, bearings, and other mechanical parts associated with the drive combination. A current surge will cause the relay assigned to the rapid trip/ mechanical jam function to become active. The user may set the pickup level, the trip time delay and an alarm for early warning.

2 100

3 10

4 5 1.0

Stator Overtemperature (Option R)

MULTIPLE OF FULL LOAD CURRENT SETPOINT

500

600 700 800 900 1000

400

300

200

60 70 80 90 100

50

40

30

20

5

6 7 8 9 10

4

3

2

0.5

0.1 0.6 0.7 0.8 0.9 1

TIME TO TRIP IN SECONDS

0%

369flexa2.cdr

Typical FlexCurveTM.

Unbalance (Negative Sequence) Unbalanced three-phase supply voltages are a major cause of induction motor thermal damage. Induced currents in the rotor can be high, whereas stator current increases can be much lower. To prevent rotor damage, unbalance protection must be used. Unbalance alarm, trip, and single-phase tripping is provided.

Undercurrent (Minimum Load) The undercurrent function is used to detect a decrease in motor current caused by a decrease in motor load. This is especially useful for indication of conditions such as loss of suction for pumps, loss of airflow for fans, or a broken belt for conveyors. A separate undercurrent alarm level may be set to provide early warning.

Monitoring up to 12 stator RTDs provides optional stator winding overtemperature protection. If less than six RTDs are used for stator monitoring, the remaining RTDs may be used for any other temperature monitoring function desired. Individual RTD alarm, high alarm and trip levels are also available, set by the user.

Temperature Monitor (Option R) A total of twelve optional RTD inputs are available. Any RTD inputs not used for stator RTD protection can be used for other temperature monitoring functions. Separate alarm and trip level temperatures can be selected for each RTD. Alternatively, a remote RRTD module can also be used with the 369 for temperature monitoring.

Back-Spin Detection (Option B) The BSD option is used to detect flow reversal of a pump motor when check valves are not functioning or are non-existent. Once the pump has stopped rotating, the BSD will allow the pump to safely restart, minimizing downtime and preventing motor damage. The BSD uses sensitive circuits to detect the voltage produced by the back-spinning motor. Digital signal processing techniques determine the direction of rotation and

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0C

40C

80C

RTD BIAS MIN. VALUE

120C 110C RTD BIAS CENTER VALUE

160C

200C

155C RTD BIAS MAX. VALUE

9

FACTORY PRESET CURVE: Min.= 40C, Center = 110C & Max.= 155C Center Thermal Capacity = 15% 968570A6.cdr

RTD bias curve sample

RTD Hot Motor Compensation (Option R) Optional hot motor compensation allows the RTDs measuring the stator temperature to act as a thermal capacity check by confirming the value calculated by the thermal model. The thermal capacity used is updated to reflect the higher of the two values. This accounts for both heat due to I2t and motor heating due to loss of cooling or extreme ambient temperatures. Additionally, the 369 allows the user to match the motor thermal characteristics with a dual slope RTD bias curve. The two-part curve allows for easy integration of hot and cold motor damage curves to the RTD bias feature.

Exponential Cooldown The 369 has a true exponential cooldown characteristic which mimics actual motor cooling rates, provided that motor cooling time constants are available for both the stopped and running cases. A stopped motor will normally cool significantly slower than a running motor. Use the 369 to learn and estimate the stopped and running cool time constants for a motor. Calculation of a cool time constant is performed whenever the motor state transitions from starting to running or from running to stopped. The learned cool times are based on the cooling rate of the hottest stator RTD, the hot/cold ratio, the ambient temperature (40 ° C if no ambient RTD), the measured motor load and the programmed service factor or overload pickup.

221

369 Motor Protection System THERMAL CAPACITY USED 100 90 80

FLC Reduction Set @ 20% & 100% FLC.

70 60 50

FLC Reduction is 8% @ 40% FLC.

40 30 20 10

Speed Switch Input

Monitoring and Metering

The speed switch input terminals allow use of an external speed device. This is typically used to allow a locked rotor condition to be distinguished from a normal start, and to shut down following a short delay.

The 369 offers a choice of optional monitoring and metering functions including:

0.00 0.00

27

55

82

110

137

165

192

220

247

TIME (Seconds X 10)

968579A3.cdr

VFD Applications

9

The 369 is capable of protecting motors fed from variable frequency drives (VFDs), including pulse width modulated (PWM) drives. The 369 has been extensively tested with varying current waveforms and frequencies ranging from 15 to 300 Hz.

Inputs and Outputs The 369 features a variety of digital input and output channels. Any of the programmable digital inputs may be selected and programmed as a separate General Switch, Digital Counter, or Waveform Capture Input. In addition the programmable digital inputs may be selected and programmed to perform one of the following functions: Emergency Restart, Differential Switch, Speed Switch, or Remote Reset as inputs described below.

Setpoint Access These terminals must be shorted together in order to locally store new setpoints

Emergency Restart It may be necessary to restart a faulted motor for reasons of production or safety. To override a start inhibit or overload trip lockout condition, the emergency restart feature can be used. This clears the thermal memory, allowing a manual reset and restart. The 369 can be programmed to provide a single shot emergency restart following an overload trip. The accumulated I2t value is automatically reduced to a level that would allow a restart. After the restart attempt, if the relay trips the motor again on running overload, it will remain latched for the appropriate lock-out time.

Differential Relay Input The digital inputs accept contact closure from an external differential relay to provide a facility to trip the protected motor via the 369. It can also be utilized for grouping external protective functions through one main relay.

Spare Input The spare input terminals can be configured to represent either a standard or a specific contact input. Use the Spare Input as a starter status contact input. The 52b contact from a circuit breaker gives positive identification of the position of the breaker (open or closed), and should be used in applications to any synchronous machine or induction machine that may run unloaded.

Remote Reset This input can be used for remote or automatic reset from a control switch, a PLC, or DCS output.

Metering (Option M) The 369 metering option provides monitoring of quantities such as PF, kW, frequency, etc. Several protection functions can be performed based on these parameters, including: Q Voltage Q Watts ( kW, MW ) Q Vars ( kVar, MVar) Q Power factor Q Frequency Q Energy (MWh)

Actual Values Actual values can be viewed for: Q Average and individual phase currents Q RTD temperatures (hottest, individual, maximum) (R Option) Q Unbalance ratio (%In/Ip) Q Ground leakage current Q Thermal capacity remaining/ estimated time to trip at present overload level Q Motor load as a percent of full load Q Phase-to-phase or phase-to-neutral voltage (M option) Q W, var, MWhr, PF, Hz (M option)

Prior Alarms

Outputs The 369 has four output relay contacts. The trip relay acts as the main latched output relay. An alarm and two auxiliary output relays have been provided. The Alarm and Auxiliary 1 relays may be programmed for latched or unlatched modes. All relays may be programmed fail-safe or non fail-safe.

Analog Outputs (Option M) Three optional isolated analog outputs are provided (in addition to the one analog output available in the base model). Use the configurable analog outputs to provide standard transducer signals to local monitoring equipment. They can be field selected as 0 to 1, 0 to 20 or 4 to 20 mA outputs. The analog outputs can be configured to provide suitable outputs based on any measured analog value, or any calculated quantity. THERMAL CAPACITY USED %

The 369 can trigger an alarm prior to a trip caused by the following conditions: Q Immediate overload/stall warning Q Ground fault Q Mechanical jam Q Unbalance Q Undercurrent Q RTD overtemperature, broken RTD sensor, low temperature RTD Q Self-test and service Q Under/overvoltage (meter option) Q Low power factor (meter option)

Fault Diagnosis After a trip, the cause of the trip, measured current values, unbalance, and temperature present at the time of trip are displayed. This information helps facilitate troubleshooting. An event record of the last 250 events helps identify persistent problems.

925146A3.cdr

222

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369 Motor Protection System Alarm functions include immediate overload warning, unbalance, undercurrent, and internal selfcheck fault. An alarm can allow corrective action to be taken before a trip occurs.

LED Indicators

Statistical Data

A front RS232 port is provided for downloading setpoints and interrogating the relay using the Windows®-based 369 EnerVista setup program.

Statistical data of motor use for operations monitoring, maintenance, and fault diagnosis is provided by the 369. Using the keypad, the user can display the running hours and number of starts since last commissioning, the total number of trips and their types, and the total mega-watthours (with the M option).

Self-Test A continuous self-check is maintained with or without the motor running, and an alarm is provided for relay internal malfunctions. The alarm triggers a status indication on the front panel and sends a signal to a user-selectable output relay.

Ten LED indicators on the front panel provide quick visual indication of status.

Communications Simulation mode settings using 369 EnerVista setup software

User Interfaces A variety of communication interfaces are available in the 369:

Display and Keypad The 40-character display and keypad provide convenient local communications and control. Setpoints can be manipulated using the keypad and display. To help prevent tampering, a setpoint access input must be shorted before changes can be made. The display module can be separated from the relay and mounted remotely. PHASE CT PRIMARY: 586 A

Testing A simulation mode allows forcing relay contacts and analogue outputs without the need for a relay test set. This is an ideal tool during commissioning for system functional testing. The feature can also be used to verify the wiring from the relay analogue outputs to the local panel meters or to remote PLCs.

LEARNED ACCELERATION TIME = 0.05 Self-explanatory messages make programming and monitoring easy.

The relay is shipped pre-programmed for some applications and only minor field program changes will be necessary to suit the particular motor. Access for programming is gained by placing a jumper across terminals 57 - 58, identified as Access Switch terminals. When programming is complete the jumper is removed, making the program secure. A software access code can also be programmed for added security.

Three independent rear RS485 ports offer the customer flexibility and performance for their communication network. The 369 can communicate at baud rates up to 19,200 bps using the industry standard ModBus® RTU protocol. Both fiber optic (option F) Profibus interface (option P), and Ethernet (option E) ports are also available. The optional Ethernet port can be used to connect the 369 to 10 Mbps Ethernet networks. The communication system of the 369 is designed to allow simultaneous communication via all ports.

9

Using Ethernet as the physical media to integrate the 369 to Local or Wide Area Networks, replaces a multidrop-wired network (e.g., serial Modbus®), and eliminates expensive leased or dial-up connections, reducing monthly operating costs.

Future Expansion An open architecture protocol and hardware interface allow different GE Multilin relays or devices by other manufacturers to be mixed on the same communication link. The 369 can be integrated into a plant control system, or operate alone. Internal flash memory allows easy upgrades by simply loading new program code via the front serial port.

The 369 has a non-volatile memory and programming remains intact upon loss of control power. In the event of control power loss following a lock-out trip, lock-out time is also saved.

369 SPLIT MOUNTING I/O HOUSING

DISPLAY MODULE 1.35" (34)

8.07" (205)

0.75" (19)

369 Motor Management Relay ¨

6.125" (156)

6.12" (156)

4.23" (107) 0.75" (19)

1.77" (45)

10.24" (260)

10.875" (276)

11.67" (296)

6.30" (160)

MOUNTING SURFACE

www.GEMultilin.com

SIDE VIEW

REAR MOUNTING

6.30" (160)

0.80" (4 PLACES) (20) 0.218" (6) DIA.

0.80" (4 PLACES) (20) 0.218" (6) DIA.

FRONT VIEW

1.77" (45) 10.875" (276)

10.875" (276) Inches (mm)

6.125" (156)

6.65" (169) REAR VIEW

MOUNTING SURFACE

840715B7.eps

SIDE VIEW

FRONT MOUNTING

223

369 Motor Protection System 369 Front View

Features

DISPLAY 40 Character alpha-numeric LCD display for viewing actual values, causes of alarms and trips, and programming setpoints

STATUS INDICATORS 4 LEDs indicate when an output is activated. When an LED is lit, the cause of the output relay operation will be shown on the display. SERVICE LED indicates that a self-diagnostic test failed.

STATUS INDICATORS LEDs indicate if motor is backspinning, RRTD is connected, metering is enabled and com status.

Rugged, corrosion and flame retardant case. HELP KEY Help key can be pressed at any time to provide additional information

KEYPAD Used to select the display of actual values, causes of alarms, causes of trips, fault diagnosis, and to program setpoints

9

COMPUTER INTERFACE RS232 comm port for connecting to a PC. Use for downloading setpoints, monitoring, data collection & printing reports. (Accessed behind cover)

369 Rear View

4 OUTPUT RELAYS Programmable alarm and trip conditions activated by programmable setpoints, switch input, remote communication control

CONTROL POWER HI: 50-300 VDC / 40-265 VAC LO: 20-60 VDC / 20-48 VAC

Customer Accessible Fuse

DIGITAL INPUTS 12 RTD INPUTS ( R ) Field selectable type PROFIBUS PORT ( P )

3 x RS485 Ports 3 Independent modbus channels 1 ANALOG OUTPUT (Base Unit) 3 ANALOG OUTPUTS (M, B) FIBER OPTIC DATA LINK ( F ) For harsh enviroments and or hook up to RRTD

BACKSPIN DETECTION ( B ) 0-575V RMS

CURRENT INPUTS 3 Phase and ground CT inputs 5 A, 1 A taps

GROUND CT INPUTS 5 A, 1 A and 50:0.025 taps

840702BF.ai

Dimensions 369 MOTOR MANAGEMENT RELAY 8.07" (205)

Inches (mm) 4.23" (107)

VOLTAGE INPUTS ( M ) 0-240 V wye or delta VT connections.

6.85" (174)

6.125" (156)

6.125" (156)

MOUNTING SURFACE FRONT VIEW

224

SIDE VIEW

6.65" (169) REAR VIEW

10.45" (265) 10.875" (276)

10.875" (276)

11.67" (296)

10.24" (260)

369 Motor Management Relay ¨

0.218" (6) DIA (4 PLACES) 840703B6.eps

www.GEMultilin.com

369 Motor Protection System

Typical Wiring HGF-CT

(5 Amp CT) A

C(B)

A B(C)

B

MOTOR

C

Twisted Pair

VN

VB

VN

VC

Phas e A

VOLT AGE INPUTS WITH METERING

STATOR WINDING 5

STATOR WINDING 6

MOTOR BEARING 2

PUMP BEARING 1

PUMP BEARING 2

PUMP CASE

AMBIENT

369 TXD RXD SGND

1 2 3 4 5 6 7 8 9

9 PIN CONNECTOR

N

V

Multilin 369 Motor Management System

FILTER G ROUND LINE + NEUTRAL SAFETY GROUND

TRIP

RELAYS

RTD4

ALARM

AUX. 1

AUX. 2

RTD5

RTD6

shld.

Com

RTD7

DIFFERENTIAL RELAY SPEED SWITCH ACCESS SWITCH EMERGENCY REST AR T EXTERNAL RESET

shld.

Com

RTD8

1 2

shld.

Com

51 52 53 54 55 56 57 58 59 60 61 62

SPARE

shld.

Com

RTD9

123 124 125 126

CONTROL POWER N

3 4 Com-

shld.

shld.

80 81 82 83 84 85

CR

ALARM

NOTE RELAY CONTACTS SHOWN WITH CONTROL POWER REMOVED

RTD ALARM SELF TEST ALARM

87 14

DIFFERENTIAL RELAY SPEED SWITCH KEYSWITCH OR JUMPER

load

RS485

PF Watts

+ -

METER

cpm-

Shield

Shield

PLC Com

RTD10 Profibus Optio n ( P)

shld.

HUB

Ether net Optio n ( E) RJ-45

Com

CHANNEL

shld.

DB- 9 (front )

1

CHANNEL

RS485

2

CHANNEL

RS485 SHLD

Com

ST CONNECTION

RTD11 OPTION (F )

RS485 SHLD

FIBER SHLD

RTD12

71

shld.

72

73

74

75

76

77

78

SCADA

3

79

Tx

Rx

50/125 uM FIBER 62.5/125 uM FIBER 100/140 uM FIBER RTD1

COMPUTER

1 2 3 4 5 6 7 8 9

9

L

380V AC/125VDC

RTD2

RTD3

GROUND BUS

111 112 113 114 115 116 117 118 119 120 121 122

shld.

Com

OPTIONAL

Optio n ( B)

shld.

Com

90

Back Spin

INPUTS

shld.

Com

91

50: 0.025A

Neut/Gnd

(R)

MOTOR BEARING 1

1A COM 1A COM 5A

Phase C

OUTPUT

STATOR WINDING 4

1A COM 5A

DIGITAL I NPUTS

STATOR WINDING 3

Com

99 100 102 104 103 101

CURRENT

g

RTD1

98

OPTION (M,B )

STATOR WINDING 2

Com

97

Phase B

OPTION (M)

shld.

96

OPTION

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

STATOR WINDING 1

95

1A COM 5A

5A

VN

94

ANALOG OUTPUTS

VA

93

CONTROL POWER

92

105 106 107 108 109 110

8 3 RXD 2 TXD 20 7 SGND 6 4 5 22

5

4 9

3 8

2 7

1 6

REMOTE RT D MODULE

RTD12 36 9 P C PROGRAM

PC

840700BD.CDR

25 PIN CONNECTOR

www.GEMultilin.com

225

369 Motor Protection System

369 Technical Specifications

9

PROTECTION OVERLOAD CURVES TRIP TIME Curves: 15 curves, fixed shape/prog. FlexCurve™ Overload pickup: 1.0 – 1.25 x FLA Accuracy: Pickup: ±1% of full scale Time: ±100 ms or ±2% of total trip time SHORT CIRCUIT AND GROUND TRIP Ground trip level: 0.25 – 25.00 A (50:0.025 CT) 10 – 100% (1 A/5 A CT) S/C trip level: 2 – 20 x CT, OFF Intentional delay: INST. or 10 ms to 2000 ms (S/C) (GROUND) Instantaneous: 45 ms START PROTECTION Thermal: Separate start and run protection Activation: Inrush current increases 5% to >101% FLC in 1 sec Deactivation: Current drops 5% FLC Locked rotor: 2 – 10 x FLC Stall time: 1.0 – 600.0 sec THERMAL MODELING Thermal capacity:Separate stop/run, exponential cool down Cool rate: Stop: cool time constant 1 – 500 min Run: cool time constant 1 – 500 min Hot/cold: 50 – 100%, hot after 15 min running Lockout: 1 – 500 min programmable ±20% power on or off UNBALANCE Range: 4 – 30% Accuracy: ±2% Delay: 0 – 255 sec I -I Calculation: Iav > IFLC UB% = I m av I x 100% Iav Im - Iav Ix Iav < IFLC UB% = I 100% IFLC where: Iav = average phase current Im = phase with maximum deviation from Iav IFLC = motor full load current setting METERING PHASE CURRENT INPUTS Conversion: True rms, sample time 1.04 ms CT input: 1 A and 5 A secondary Range: 0.05 to 20 x phase CT primary amps Full scale: 20 x phase CT primary amps Frequency: 20 – 300 Hz Accuracy: @ 2 x CT 1.0% of 20 x CT GROUND CURRENT INPUT (GF CT) CT input (rated): 1 A / 5 A secondary and 50:0.025 CT primary: 1 – 5000 A (1 A / 5 A) Range: 0.1 to 1.0 x CT primary (1 A / 5 A) 0.05 to 16.0 A (50:0.025) Full scale: 1.0 x CT primary (1 A / 5 A) Frequency: 20 – 100 Hz Conversion: True rms 1.04 ms / sample Accuracy: ±1% of full scale (1 A / 5 A) ±0.07 A @ 1 A (50:0.025) ±0.20 A @ 16 A (50:0.025) PHASE/LINE VOLTAGE INPUT(VT)(Option M) VT ratio: 1.00 – 240:1 in steps of 0.01 VT secondary: 240 VAC (full scale) Range: 0.05 – 1.00 x full scale Frequency: 20 – 100 Hz Conversion: True rms 1.04 ms/sample Accuracy: ±1.0% of full scale Burden: >200 kΩ Max continuous: 280 VAC POWER METERING (Option M): ACCURACY PARAMETER (FULL SCALE) RESOLUTION RANGE kW ±2% 1 kW ±32,000 kvar ±2% 1 kvar ±32,000 kVA ±2% 1 kVA 0 – 50,000 mWh ±2% 1 MWh 0 – 65,535 ±kvarh ±2% 1 kvarh 0 – 65,535 Power Factor ±1% 0.01 ±0.00 – 1.00 Frequency ±0.02 Hz 0.01 Hz 20.00 – 100.00 kW Demand ±2% 1 kW 0 – 50,000 kvar Demand ±2% 1 kvar 0 – 50,000 kVA Demand ±2% 1 kVA 0 – 50,000 Amp Demand ±2% 1A 0 – 65,535

226

MONITORING WAVEFORM CAPTURE Length: 3 buffers containing 16 cycles of all current and voltage channels Trigger position:1 – 100% pre-trip to post-trip Trigger: trip, manually via communications or digital input INPUTS RTDS INPUTS (OPTION R): Wire type: 3-wire Sensor type: 100 Ω platinum (DIN 43760) 100 Ω nickel, 120 û nickel 10 Ω Copper RTD sensing current: 3 mA Range: -40 to 200° C or -40 to 424° F Lead resistance: 25 Ω max for Pt and Ni type 3 Ω max for Cu type Isolation: 36 Vpk BSD INPUTS (OPTION B) Frequency: 2 – 300 Hz Dynamic BSD range: 30 mV – 575 V rms Accuracy: ±0.02 Hz DIGITAL / SWITCH INPUTS Inputs: 6 optically isolated Input type: Dry contact (