AIR CIRCUIT BREAKERS - Electrical and Electronics Division

TECHNICAL DATA
Series 80 M 61 M
Type MPP-H MD-XL
MPP-H Capacitor unit MD-XL Capacitor unit
Standards IS 2834-1986 / IS 13340-1993 / IS 13341-1992 / IS 2834-1986 / IS 13340-1993 / IS 13341-1992 /
IEC 831-1 (1996-11) & IEC 831-2 (1995-12) IEC 831-1 (1996-11) & IEC 831-2 (1995-12)
Rated voltage 415/440 V (Other ratings on request) 415/440 V (Other ratings on request)
Overvoltage Un Continuous Un Continuous
Un + 15% (up to 12 hours daily) Un + 15% (up to 12 hours daily)
Un + 20% (up to 30 minutes daily) Un + 20% (up to 30 minutes daily)
Un + 25% (up to 5 minutes daily) Un + 25% (up to 5 minutes daily)
Un + 30% (up to 1 minute) Un + 30% (up to 1 minute)
Any overvoltage>1.15 Un shall not occur
more than 200 times in the Capacitor’s life
As per clause 20.1 of IEC
As per IEC clause 20.1
Overcurrent 1.8 In at 1.15 Cn combined with 2 In at 1.15 Cn combined with
overvoltage & presence of harmonics, as overvoltage & presence of
per IEC clause 21. harmonics, as per IEC clause 21.
�requency (Hz) 50 / 60 50 / 60
No of phases Single (or) Three Single (or) Three
Capacitance tolerance -5% to 15% -5% to 15%
Test voltage, terminal / terminal 2.15 . Un 2.15 . Un
Test voltage, terminal / case 3.6 kV AC 3.6 kV AC
Peak transient overcurrent 200 x In 200 x In
Losses Total 0.5 W / kVAr 0.5 W / kVAr
Dielectric 0.2 W / kVAr 0.2 W / kVAr
Degree of protection IP 31 IP 31
Ambient temperature category -25 / D (Maximum 55 deg C) -25 / D (Maximum 55 deg C)
Maximum permissible altitude 2000m above mean sea level 2000m above mean sea level
Mounting position Vertical with terminal upwards Vertical with terminal upwards
Safety features Self healing with PSD Self healing with PSD
Pressure Sensitive Disconnector Pressure Sensitive Disconnector
Container type M.S. Sheet Metal M.S. Sheet Metal
�inish Polyester Pain Coated Polyester Pain Coated
Dielectric Bi-axially oriented Polypropylene �ilm Combination of Capacitor tissue
paper and bi-axially oriented
Polypropylene �ilm
Impregnant Non-PCB bio-degradable impregnant Non-PCB bio-degradable impregnant
Discharge Device Discharge Resistor Discharge Resistor
Electrodes Special vaccuum deposited metal Special double side vacuum
alloy with re-inforced edge. deposited metal coating
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