Outdoor Type Vacuum Circuit Breakers Panel Standard: High Standard

11KV 33KV PCVCB OUTDOOR CHAPTER a II
EREVA TRANSFORMERS AND SWITCHGEAR GHAZIABAD UP

A.CIRCUIT BREAKERS only relevant voltage level to be filled
Sl.DescriptionUnitGuaranteed Particulars
No.132 kV33 KV
1Manufacturera s Name and CountryCGL MAKE
2Manufacturera s type designation
3Applicable Technical StandardsIEC : 62271-100-200
4(a) Type of circuit breaker VACUUM CIRCUIT BREAKER
(b) Type of tank (live/dead)NA
(c) Altitude MSL1000m
(d) Mechanical endurance2M
5Rated frequency(Hz)50Hz
6Number of poles(Nos.)THREE (3)
7Whether 3 pole or single pole unit3 POLE
8No. of breaks per pole1/pole
9Type a OutdoorOUTDOOR TYPE
10Rated continuous current at design(Amp)2000A
temperature of 38 deg. C
11Rated short circuit breaking current40KA
a)RMS value of AC component(kA)40KA
b)Percentage DC component(%)<50%
c)Asymmetrical breaking current at highest(kA)31.5KA
system voltage
d)Is it possible to increase the rupturing(Yes/NoNo
capacity at a later date)
12Short time current rating for 1 sec.(kA)40KA
13Rated operating duty cycleO-0.3sec-CO-3min-CO
14Rated short circuit making current(kA100KApeak)
15First pole to clear factor1.5
16Rated characteristics for short time faults(kA40
and rated breaking capacitypeak)
17Rated line charging breaking current with(kA)40
temporary over voltage upto 1.4 p.u.
18Rated out of phase breaking current and(kA,100KA
corresponding transient recovery voltagekV)
19Rated small inductive breaking current with(Amp,AS PER IEC
corresponding switching over voltagep.u)
20Rated cable charging breaking current and(Amp, 0A
corresponding over voltages recorded duringp.u)
Test
21(a) Maximum period between firstAS PER IEC
contact and last contact in a pole
(b) Maximum pole descrepancy15
22Rated (single) capacitor bank(Amp,400A
breaking current and correspondingp.u)
over voltages recorded during test
23Data on re-striking voltage for terminal faults
a)Amplitude factorWITHIN
100% capacityLIMITH
60% capacityOF IEC30% capacity10% capacity
b)Phase factorWITHIN
100% capacityLIMITH
60% capacityOF IEC
30% capacity
10% capacity
c)Rate of rise of re-striking voltageWITHIN
100% capacityLIMITH
60% capacityOF IEC
30% capacity
10% capacity
d)Transient recovery voltageWITHIN
100% capacity(kVLIMITH peak)
60% capacity(kVOF IEC peak)
30% capacity(kV peak)
10% capacity(kV peak)
24a) Is circuit breaker re-strike free(Yes/NoYes
under all conditions of operation.)
b) Means adopted if any to check theN/Avoltage rise
25Max. arcing time under any duty(ms)10 Ms
condition with limiting conditions of
voltage and pressure
26Maximum total break time under any(ms)60 Ms
duty condition for any current up to
rated breaking current with limiting
conditions of voltage and pressure
27Maximum closing time(ms)100 Ms
28Minimum opening time under any(ms)50 Ms
duty condition with limiting voltage
and pressure
29Maximum close open time under any(ms)100 Ms
condition with limiting voltage and pressure
30Minimum re-closing time at rated(ms)100 Ms
interrupting capacity from instant of
trip coil energisation
31Minimum dead time for
a)Three phase reclosing(ms)0.3 SEC
b)Single phase reclosing(ms)AS PER IEC