AIR CIRCUIT BREAKERS - Electrical and Electronics Division

12
Series 26 D 19 M
Type MPP-D MPP-S
Capacitors for Agricultural use MPP-S Capacitor unit
Standards IS 2834-1986 IS 2834-1986 / IS 13340-1993 / IS 13341-1992 /
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 As per clause 5.2 of IS 2834-1986 Un Continuous
Un + 10% (up to 12 hours daily)
Un + 15% (up to 30 minutes daily)
Un + 20% (up to 5 minutes daily)
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
Overcurrent As per clause 5.3 of IS 2834-1986, 1.5 In at 1.15 Cn combined with
1.43 In at 1.1 Cn & 1.1 Un combined overvoltage & presence of harmonics, as
with presence of Harmonics. per clause, 21 of IEC 831.
�requency (Hz) 50 / 60 50 / 60
No of phases Three Single (or) Three
Capacitance tolerance -5% to +10% -5% to 15%
Test voltage, terminal / terminal 1.5 . Un 2.15 . Un
Test voltage, terminal / case
(Insulation level)
2.5 kV AC 3.6 kV AC
Peak transient overcurrent 100 x In 100 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 21 (with connecting cable) 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 Wall mounting Vertical with terminal upwards
Safety features Self healing Self healing
Polyurethane Resin encapsulation Pressure Sensitive Disconnector (PSD)
Container type M.S. Sheet Metal M.S. Sheet Metal
�inish Polyester Pain Coated Polyester Pain Coated
Dielectric Bi-axially oriented Polypropylene �ilm Bi-axially oriented Polypropylene �ilm
Impregnant Resin Non-PCB bio-degradable impregnant
Discharge Device Discharge Resistor Discharge Resistor
Electrodes Special vaccuum deposited metal Special vaccuum deposited metal
alloy with re-inforced edge. alloy with re-inforced edge.
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TECHNICAL DATA