iMCC – Robust Motor Operating Mechanism

Overview

iMCC is an intelligent and robust motor operating mechanism for controlling and monitoring disconnect switches. It offers variable speed control, monitoring, hard copper wire signalling & IEC 61850/DNP3 communication protocols, optical positioning and more.

It provides all the mechanical features of a conventional motor operated disconnect (MOD) optimized for maintenance free with an integrated high tech monitoring and control module called iCOD. iMCC is compatible with most disconnect switches in the market for ratios of 45 to 180 degrees and multiple turns. Using high precision gears, robust gearbox and an overrated motor, it is designed to operate for the life of the disconnect switch.

Highlights

  • New Optical Positioning System
  • Variable Speed Control
  • Real-Time Monitoring
  • Real-Time Analysis
  • Multi-Trial Mode for obstruction removal
  • CMI Installation, Configuration and Analysis Software
  • Strong Mechanical Design
  • Maintenance Free Design

iMCC - Motor Operating Mechanism

 

Disconnect switch

Variable Speed Control

  • Smooth mechanical acceleration/deceleration
  • Decreased mechanical stress on components
  • Arcing time decreased significantly
    • Reduced harsh harmonics injected into the grid
    • Improved lifespan of adjacent equipment such as Power Transformers
    • Reduced arc exposure to contacts which improves their lifespan

Optical Positioning Device & Dynamic Break

  • Precise and absolute positioning
  • Optimal contact pressure
  • No post-adjustment required following the initial configuration

Monitoring

  • Integrated monitoring system – no remote control unit (RTU)
  • Voltage, current and torque in function of time and positions
  • Temperature and humidity inside housing
  • System components status
  • Further monitoring through real-time analysis

Real-time analysis

  • Detection of mechanical blockages & breakages
  • Detection of major misalignments
  • Detection of incorrect positioning in contact fingers
  • Up to 400 operations recorded for in-depth analysis

Notification/communication

  • IEC61850 & DNP3 protocols
  • Auxiliary Signal Module (ASM) easily expandable – up to 30 signals
  • 20 alarm codes available locally
  • 2 alarm signals; critical and non critical
  • 2 positioning signals; opened and closed
  • 3 mode status signals; local/remote and manual

Mechanically Conforms

  • IP56 housing
  • Various operating modes

             (1)  Local: manually operated
             (2)  Local: motor operated
             (3)  Remote: motor operated
             (4)  Lock: Mechanically and electrically decoupled

  • Available in aluminum and Stainless Steal
  • Ratios: 45 to 180 degrees and multi-turns
  • Innovative and secure crank system for manual operation and modes selection

         CMI real-time monitoring panel



































CMI real-time monitoring panel

Overview

iCOD – Intelligent Controlled Operation Disconnect is the intelligent module inside the iMCC motor operating mechanism composed of two independent microprocessors, one for the variable and configurable speed control and the second for the real-time monitoring and analysis.

The heart of the iCOD is the optical positioning system, OPS. The OPS eliminates the need for auxiliary cam switches used for signalling, but most importantly, it is used to determine the position of the disconnect switch during each and every operation. Based on that information, iCOD can monitor the parameters inside the motor operating mechanism, and some parameters from the disconnect switch. Indeed, using a comparative range of torque in function of the position determined based on good operating conditions data; iCOD can detect major misalignments, breakages and blockages, and provide a good estimation of where the failures occurs.

A key feature of iCOD is also its ability to reduce the arc time during opening or closing of the switch. Arc time is directly related to the amount of harmonics injected back into the grid. iCOD can vary the motor speed, thus decreasing the duration of the arc. Fewer harmonic will increase the life of adjacent equipments within the substation.

Real-time monitoring

  • Current & voltage
  • Alarm status
  • Motor status
  • Error status
  • Position
  • Operation time
  • Speed
  • Environmental data

In-depth analysis

  • Up to 400 operations
  • Current, voltage & torque available function of time and position
  • Multiple curves display for trend analysis

Configuration

  • Configuration wizard
  • General settings
  • Envelops settings (range of operation in DS healthy condition)
  • Acceleration/deceleration settings
  • Failures/error type settings
  • Signalling configuration
 
 
CMI real-time monitoring panel
 
CMI real-time monitoring panel






























iMCC designed to be virtually maintenance free

  • Cam switches replaced by optical positioning system
  • Contact oxidation resolved
  • Contactor relays replaced by solid state motor drive
  • Conventional push buttons replaced by membrane switch
  • Standard terminals replaced by spring cage terminals (optional)
  • Overcurrent detection and limitation
  • Maintenance free gearbox (no lubrication)
  • Sealed housing
  • Robust stainless steel and aluminum housing and components

 
 
Maintenance free gearbox

General

Weight 85kg (188lbs)
Environmental
Operating temperature(1) model E -10°C to 70°C (14°F to 158°F)
model T -40°C to 70°C (-40°F to 158°F)
Storage temperature -40°C to 85°C (-40°F to 185°F)
Operating humidity 0% à 99%RH
Storage humidity 0% à 99%RH

(1) iCOD model E: cold start from -10C,   iCOD model T: cold start from – 40C

Mechanical

Performances
Nominal output torque 1000Nm (8800lbs-in)
Peak output torque 5120Nm (45000lbs-in)
Operating time Output 90° 4s
Output 180° 8s
Gear box ratio Motor 700:1
Manual 168:1

Control

Control supply
Voltage (iCOD) V48 48Vdc
V115 115Vac
V125 125Vdc
V250 250Vdc, 230Vac
Supply variation +20%, -20%
Frequency DC / 50Hz / 60Hz
Consumption 11.25W
Auxiliary supply (heating)
Voltage AC 1ph: 0 to 230Vac
Frequency 50Hz / 60Hz
Heating resistor Max 300W
Sensors
Humidity sensor Range 0-99%RH
Temperature sensors Range -55°C to 150°C
Position Type Absolute Optical Encoder
Resolution 1024 points/turn
Communication Ports
Local configuration Port USB 2.0
Data rate 12Mbits
Dielectric Strength 2000Vrms (1min)

Motor

Motor supply
Voltage 0 to 250Vdc
0 to 240Vac, 1ph
Frequency DC / 50Hz / 60Hz
Current consumption Continuous Up to 12A
Peak internally limited 50A
Sensors
Voltage measurements Range 0 V to 400V
Resolution 308mV
Current measurements Range 0 V to 30A
Resolution 102mA
Motor spec
Voltage 48V, 90V or 180V
Speed 2500rpm
Power 400W (0.5HP)
Frame 56C
Type DC, permanent magnet

ASM module

ASM Module
Number of stages 2
Number of outputs 9 per stage
Consumption 4.1W per stage
Contact rating ASM2-DC Resistive DC = 2A @ 125Vdc
Inductive DC(2) = 0.2mA @ 125Vdc
ASM2-AC Resistive AC = 12A @ 250Vac
Inductive AC(2) = 3A @ 250Vac
Wire gauge 0.5mm2 to 16mm2 (20 to 6AWG)

(2) High inductive load => L/R = 20ms

Connectivity and protection

Terminal bloc
Wire gauge 0.5-10 mm² (24 to 6AWG)
Max current 57A
Max voltage 600V
Internal wire gauge 2.5mm2 (14AWG)
Breakers
Control breaker Double 4A curve Z, 125Vdc, 230Vac
Motor breaker Double 6A curve C, 125Vdc, 230Vac
Heater breaker Single 6A, curve B, 125Vdc, 230Vac

iMCC Compliance

Electromagnetic compatibility
Radiated RF electromagnetic field, 61000-4-3 10 V/m
Electrostatic discharge immunity,IEC 61000-4-2 ±8 kV in air, ±6kV in contact
Damped oscillatory wave, IEC 61000-4-12 1 kV diff mode, 2.5 kV common mode
Electrical fast transient / burst immunity,IEC 61000-4-4 ±4 kV main supplies, ±2kV data port & I/Os
Surge immunity, IEC 61000-4-5 ±4kV common mode, ±2kV diff mode
Conducted disturbances, induced by RF fields, IEC 61000-4-6 10V
Ripple on DC power supply, IEC 61000-4-17 5%
Voltage dips, IEC 61000-4-29 200ms @ 50%
Voltage interruptions, IEC 61000-4-29 5, 50, 100 et 1000 ms @ 100%
Dielectric strength CEI 61180-1 2kVrms differential and common
Impulse test IEC60255-5 ±5kV differential and common
Radiated disturbances CISPR 11 Group 1, Class « A » 30 MHz à 1 GHz
Conducted disturbances CISPR 11 Group 1, Class « A » 150 kHz à 30 MHz
Environmental compatibility
Cold, IEC 60068-2-1, Ad Cold start at -40º C,
Dry heat, IEC 60068-2-2, Ba +70º C, 7 days
Damp heat, steady state, IEC 60068-2-78 +40º C, 93% rh, 98hours
Damp heat, cyclic, IEC 60068-2-30 +25º C…+40º C, 95% rh, 4 cycles of 1 day
Endurance
Endurance continue, IEC62271-102 10 000 operations @ 25°C
Endurance continue, IEC62271-102 1000    operations @ 70°C

Error Code Definitions

Code
Description
Level
00
No error
0
01
High temperature limit triggered
1
02
Upper motor voltage limit triggered
1
04
No movement detected from encoder
1 or 2
05
Encoder failure; no reading from encoder
1 or 2
06
Security position limits triggered
1
07
Local interface button failure
1
08
Operation timeout
2
09
Environmental sensor failure
1
12
Low temperature limit triggered
1
13
Maximum motor current triggered
2
14
Encoder position out of range
2
17
Three operations performed in multi-trial mode
1
25
One phase failure ; IPL signal activated
2
26
Mechanical failure of disconnect switch
2
27
Major misalignment; main contact outside jaw
2
28
Main contact jammed outside jaw
2
29
Main contact jammed inside jaw
2
30
Motor fuse blown
2
32
Intermittent power on security inputs
2

Alarm Level 1: Non critical failure; DS can operate
Alarm Level 2: Critical failure; DS out of service

iMCC Main Components

Disconnect switch

iMCC Dimensioning

Disconnect switch

Find Out More About the IMCC Benefits

IMCC PROVIDES MONITORING DATA IMCC IMPROVES OPERATIONS

IMCC DETECTS FAILURES AND NOTIFIES

IMCC ONE SIZE FITS ALL – FROM 25KV TO 1200KV