Littelfuse MPS - Differential Module (MPS-DIF)

Page 9-4
MPS Motor Protection System Rev. 6-F-022117
Technical Specifications
Certification .............................. CSA, Canada and USA
UL Recognized
(10)
Australia
Hazardous-Location ........... Class I Zone 2 Ex nA II
T6
Class I, Division 2,
Groups A, B, C, D
To:
CSA C22.2 No. 14 Industrial Control Equipment
UL 60947-4-1 Low-voltage switchgear and control
gear - Part 4-1: Contactors and motor-starters -
Electromechanical Contactors and motor-starters.
UL 1053 Ground Fault Sensing and Relaying
Equipment
CSA E60079-15: 02 Electrical Apparatus for
Explosive Gas Atmospheres
CSA C22.2 No. 213-M1987 – Non-Incendive
Electrical Equipment for use in Class I,
Division 2 Hazardous Locations
UL 60079-15 Electrical Apparatus for Explosive
Gas Atmospheres
Australia, Regulatory Compliance Mark (RCM)
9.4 DIFFERENTIAL MODULE (MPS-DIF)
Supply
(1)
.................................... 16 to 32 Vdc, 90 mA
CT Inputs:
Thermal Withstand:
Continuous ........................ 5 x CT Primary Rating (I
d
)
1-Second ........................... 80 x I
d
Burden ................................. 0.01 W
Terminal-Block Ratings:
CT Inputs ............................. 25 A, 500 Vac
10 AWG (4.0 mm
2
)
Tightening Torque ............... 0.6 N•m (5.31 lbf•in)
maximum
Differential-Current Measurement:
Metering Range ................... 15 x I
d
Protection Range ................. 80 x I
d
Metering Accuracy:
I < I
d
.................................. 2% I
d
I > I
d
.................................. 2% Reading
Timing Accuracy ................. 5%, minimum trip time,
Range is set point +20 ms
to set point +150 ms,
median 81 ms
Interconnection Cable:
Type ..................................... Belden
®
3124A or
equivalent
Maximum Length ................ 1.2 km (4,000’
Supplied length .................... 4 m (13’)
Dimensions:
Height .................................... 87 mm (3.4”)
Width ..................................... 113 mm (4.4”)
Depth ..................................... 53 mm (2.1”)
Shipping Weight ....................... 0.4 kg (0.9 lb)
PWB Conformal Coating .......... MIL-1-46058 qualified
UL-QMJU2 recognized
Environment:
Operating Temperature ......... -40 to 60°C (-40 to 140°F)
Storage Temperature ............. -55 to 80°C (-67 to 176°F)
Humidity ............................. 85% Non-Condensing
Surge Withstand ........................ ANSI/IEEE C37.90.1-
1989 (Oscillatory and Fast
Transient)
NOTES:
(1)
The I/O module supply (terminal 56), PTC (terminal
54), AN OUT (terminal 40), and 24-Vdc source
(terminal 42) are referenced to the same common.
(2)
Current Threshold (%) is defined in Section 3.2.1.2.
Power readings are not displayed for currents below
this threshold. To maintain specified accuracy, phase
CT's should be selected with a primary rating between
100 and 300% of motor full-load current.
(3)
Transformer accuracy not included.
(4)
Voltage unbalance is not displayed for positive-
sequence voltage levels below 20% of system voltage
setting.
(5)
Direct connection for system-voltages up to 600 Vac
line-to-line. UL certification requires the voltage-
input fault current to be limited to 5 kA. Use Class
CC fuses, 3/10 A, Littelfuse KLKR.300. A self-
adhesive label stating this limitation is provided.
(6)
Common-mode voltage relative to CTU terminal 3.
(7)
Referenced to COM.
(8)
Also see Tables 5.1 and 5.2.
(9)
When direct connection is used.
(10)
A 600Y/347 or 480Y/277 system is required when the
MPS direct-voltage connection is used.
(11)
UL has evaluated the MPS for use with 60°/ 75° C
conductors.