VMtec, Germany

VMtec Maschinen-und
Anlagenbau GmbH

Wiesbaden Hilda str 22
65189 Wiesbaden, Hilda str 22, Deutschland
E-Mail: info@vmtec.de


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VMtec air circuit breakers 630 - 6300 А

Salient Features

  • Lightest and most compact for a given capacity.
  • Only 4 frame sizes in the entire range, 630A to 6300A, resulting in maximum interchangeability and minimum inventory of spares.
  • High value of service breaking capacity, 45kA to 100kА, and making capacity, 94.5kAto220kA at 415V AC.
  • Total breaking time less than 30ms (including arcing time of less than 10ms) S closing time of 40ms.
  • Highest values of mechanical and electrical endurance due to robust mechanism design and special sintered metal contacts.
  • Highest degree of system protection and coordination due to the use of microprocessor based protection releases.
    • uiT- Standards release
    • Micro Pro- multi purpose release with RS485 port &ZSI feature.
  • Type of releases offer thermal magnetic and Micro-processor.
  • Most simple to operate and maintain. Only a screw driver and a spanner required to change arcing contact.
  • High dielectric strength even in hot and humid conditions due to use of class 'B' and' P insulating materials.
  • Fibre glass safety shutter for safety of operating personnel.
  • No thermal derating for D.C. Application.
  • Available in 3 or 4 pole for entire range and also fixed / draw-out version.
  • Neutral pole (in 4 pole) closes early and opens later to prevent transient over voltages in loads connected between live and neutral lines.
  • Tested for most onerous environmental conditions and approved for marine duty application.

IEC 947-2 / IS 13947-2

Amperes Frame (based on IEC, BS or IS) TYPE (number of poles 3 630
VMH-6D
800
VMH-8D
1000
VMH-10D
1250
VMH-12D
1600
VMH-16D
* Rated Ultimate Breaking Capacity/Rated Making Capacity (Icu, RMS/Icm, Peak) kA 415 AC 50/105 50/105 55/121 55/121 55/121
* Rated Service Breaking Capacity/Rated Making Capacity (Ics, RMS/Icm, Peak) kA 415V AC 45/94.5 45/94.5 50/105 50/105 50/105
  250V DC 40/40 40/40 40/40 40/40 40/40
Short time current lcw kA for 1 sec. (3 sec.) RMS 45/25 45/25 50/25 50/25 50/45
Total breaking time/closing time (m.sec) 30/40 30/40 30/40 30/40 30/40
Amperes Frame (based on IEC, BS or IS) TYPE (number of poles 3 2000
VMH-20D
2500
VMH-25D
3200
VMH-30D
4000
VMH-40D
5000
VMH-50D
6300
VMH-60D
* Rated Ultimate Breaking Capacity/Rated Making Capacity (Icu, RMS/Icm, Peak) kA 415 AC 60/132 65/143 75/166 100/200 100/200 120/264
* Rated Service Breaking Capacity/Rated Making Capacity (Ics, RMS/Icm, Peak) kA 415V AC

50/105

50/105 65/143 85/187 85/187 100/220
  250V DC 40/40 40/40 40/40 40/40 40/40 40/40
Short time current lcw kA for 1 sec. (3 sec.) RMS

50(50)

50(50) 65(65) 85(70) 85(70) 100(70)
Total breaking time/closing time (m.sec) 30/40 30/40 30/40 30/40 30/40 30/40
* Rated Service breaking capacity (Ics) & rated ultimate breaking capacity (Icu) are same except at 415V. For other voltages please contact us. Higher Breaking Capacity ACBÂ’s available on request.

General Structure

OPTIONAL FEATURES AVAILABLE ON REQUEST : 1. With Padlock facility 2. Horizontal Terminal upto VMH-25D and Vertical Terminal for 30D and above are available as Standard. Additional adaptors for changing to vertical are available as accessories. 3. On request. 4. Required for earth fault protection externally mounted for 3 pole * Dimensions for 4000A fixed breaker available on re

Microprocessor Based Overcurrent Trip Device Type uiT

uiT is a true RMS sensing overcurrent trip device, requiring no external supply for its basic function. It is available in two types, i.e., uiT 100 for industrial application and mIT–G for generator protection.

  • Error free and user friendly setting of current and timedelay.
  • Provides highest degree of system protectionco-ordination.
  • Self powered by the built in current transformer.
  • No mal-operation due to external disturbances.
  • Built in operation check function.
  • Visual fault discrimination by LEDs.
  • Three phase and earth fault in one single compact unit.
  • Self monitoring of trip unit with blinking indication.
  • Function Blocking facility provided.
  • Certified by ERTL for
    • Damp Heat Test IS 9000 - PG4
    • Dry Heat Test IS 9000 - PG3
    • Vibration Test IEC 255 - 4
    • Radio Frequency
    • Interference (RFI) IEC 801- 3
    • Electrostatic Discharge (ESD)IEC 801- 2
    • Electrical Fast Transient (EFT)IEC 801- 4
    • Surge IEC 801- 5
    • Impulse IEC 255 - 4

Thermal - Magnetic Trip Device

  • Direct acting electromagnetic instantaneous trip device with fixed factory setted release, settings 3 - 50 kA
  • Adjustable overload settings 80 - 120%.
  • Provision for remote tripping / electricalreset as optional features with overload relay.

Intelligent Release

All AH Series Air Circuit Breakers are equipped with a MicroPro Control Unit that can be changed on sites. Control Units are designed to protect Power Circuits and connected loads.

Micropro with communications

Type 4.0 4.1 5.1
Over Load Protection
Pick up 0.4-1.0 In with OFF in lOsteps: 0.4, 0.5, 0.6, 0.7, 0.8, 0.85, 0.9, 0.95,1, OFF 0.4-1.0 In with OFF in lOsteps: 0.4, 0.5, 0.6, 0.7, 0.8, 0.85, 0.9, 0.95,1 ,OFF 0.4-1.0 In with OFF in 10 steps: 0.4, 0.5, 0.6. 0.7, 0.8, 0.85,0.9,0.95,1,OFF
Delay 2.5 to 25 sec at 6 Ir in 10 steps: 2.5,5,7.5, 10,12.5,15, 17.5, 20, 22.5, 25 sec 2.5 to 25 sec at 6 Ir in 10 steps: 2.5,5,7.5, 10,12.5,15, 17.5, 20, 22.5, 25 sec 2.5 to 25 sec at 6 Ir in 10 steps: 2.5,5,7.5,10,12.5,15,17.5, 20, 22.5, 25 sec
Short Circuit
Pick up 1.5-10 Ir in lOsteps: 1.5,2,2.5,3,4,5,6,8, 9,10 1.5-10 Ir in 10 steps: 1.5,2,2.5,3,4,5,6,8, 9,10 1.5-10 Ir in 10 steps: 1.5,2,2.5,3,4,5,6,8,9,10
Delay Inst - 600 msec in 7 steps: Inst. 0.1,0.2,0.3, 0.4, 0.5, 0.6 Inst - 600 msec in 7 steps: Inst. 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 Inst - 600 msec in 7 steps: Inst. 0.1, 0.2, 0.3 , 0.4, 0.5, 0.6
Instantaneous
  2.0 -12 In with OFF in 10 steps: 2, 3, 4, 5, 6, 8, 9, 10,12, OFF 2.0-12 In with OFF in 10 steps: 2, 3, 4, 5, 6, 8, 9, 10,12, OFF 2.0-12 In with OFF in 10 steps: 2,3,4,5,6, 8,9,10,12, OFF
Earth Fault
Pick up Not Available 0.2-1.0 In with OFF in10 steps: 0.2, 0.3, 0.4, 0.5, 0.6, 0.7,0.8,0.9,1.0, OFF 0.2-1.0 In with OFF in10 steps: 0.2, 0.3, 0.4, 0.5, 0.6, 0.7,0.8,0.9,1.0, OFF
Delay Not Available lnst-600 msec in 7 steps: Inst. 0.1,0.2, 0.3, 0.4, 0.5, 0.6 Inst - 600 msec in 7 steps: Inst. 0.1, 0.2, 0.3 , 0.4, 0.5, 0.6
N Protection
Pick up Not Available OFF, 50%, 100% In OFF, 50% - 200% in 1 % steps
Indication, Monitoring & Control
Power ON LED Available Available Available
Over Load Flashing LED Available Available Available
Over Load Trip LED Available Available Available
Short Circuit Trip LED Available Available Available
Earth Fault Trip LED Not Available Available Available
LCD Dispay Available Available Available
Remote Alarm/Trip Indication Through 7 programmable relays (optional) Through 7 programmable relays (optional) Through 7 programmable relays
Trip History Fault type, current and time for last 16 trip events Fault type, current and time for last 16 trip events Fault type, current and time for last 16 trip events
Zone selectivity Available Available Available
Settings Adjustment by Knob Knob LCD + panel
Measurements
Load current Phase & N (RMS Value) Phase & N (RMS Value) Phase & N (RMS Value)
Fault current OL, SC & Inst. OL, SC, Inst, EF&N OL, SC, Inst, EF&N
Communication
To remote All parameters through communication module All parameters through communication module All parameters through communication module
Connectivity & protocol To SCADA system through MODBUS To SCADA system through MODBUS To SCADA system through MODBUS & other popular protocols

Dimension Details

Terminal Arrangements