CIRCUIT BREAKER

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/ Products /Distribution /Primary equipment /Circuit Breaker / CIRCUIT BREAKER

CIRCUIT BREAKER

Mã SPProduct Code: GL314F3/GL312F1/4031P

Price: Contact Us

Introduction:

Function Specifications Additional Information

Manufacturer/Country of Origin		offered by Tender	Alstom/ India
Ordering number		- ditto-	GL314F3
Substantial requirements
Applicable standard		IEC 62271-100	IEC 62271-100
Type		Outdoor, three-pole operation	Outdoor, three single-pole operation, electrically ganged
		Outdoor, three single-pole operation	Outdoor, three single-pole operation
Interrupter units per pole		1	1
Insulating medium		SF6	SF6
Rated voltage	kV	≥ 220	220
Highest system voltage	kV	≥ 245	245
Rated frequency	Hz	50	50
Rated current (In)	A	Type 1: ≥1250 A Type 2: ≥2000 A	3150
Rated three phase symmetrical short-circuit breaking current	kA rms.	> 40	50
Rated three phase symmetrical short circuit making current	kA peak	> 100	125
Rated duration of short-circuits	s	> 3	3
Rated Operating Sequence		O-0.3s-CO-3min-CO	O-0.3s-CO-3min-CO
Lightning impulse voltage (1.2/50ms) withstand to earth	kV peak	>1050	1050
One minute power frequency voltage withstand to earth 50 Hz	kV rms.	>460	460
First-pole-to-clear factor		1,3	1,3
Minimum creepage distance	mm/kV	>25	25mm/kv
Operating mechanism		Three-pole and single pole	Three-pole and single pole
Operating mechanism drive type		Spring	Spring
Minimum clearance between phase	mm	≥ 2100	4140
Minimum clearance to earth	mm	≥ 2100	2200
Operating times: (*)
- Opening time	ms	< 25	< 25
- Closing time	ms	< 80	< 80
- Break time	ms	< 45	< 45
- Arcing time	ms	< 20	< 20
Maximum time on auto-reclose of : (from trip energisation to instant of reclose main contacts)	ms	3-30s three phases	3-30s three phases
Resistance of main contact (new contact)	mW	< 50	< 50
Rated out-of phase breaking current	kA	>=10	12,5
Rated line charging breaking current	A rms.	> 125	125
Rated cable charging breaking current	A rms.	> 250	250
Rated small inductive breaking current	A rms.	acc. IEC 61233	10
Rated transient recovery voltage for terminal faults (T100)	kV peak	> 364	364
Auxiliary power supply
- Voltage for heating and spring charged motor	Vac	220	220
- Control, closing & tripping voltage	Vdc	220	220
Number of tripping coil	pcs	2	2
Mechanical operation duration (In - class M2)	time	> 10,000 cycles (closing-opening)	10000 cycles (Class M2)
Times tripping of 20kA (40kA) short circuit current without repair		> 30 (10)	30 (10)
Power of closing, tripping coil of CB for all three phases	VA	< 1200	340w motor per mechanism
Type test for Mechanical operation duration (The contractor must provide type tests to demonstrate the parameters offered.)	yes	yes	Yes
Gas leakage rate		≤0.5 %/year	≤0.5 %/year
Wired Control cubicle including: +Anti-pumping device + Pole discrepancy device + Local/remote control switch + SF6 density meter with alarm/trip contact + Auxiliary contact: at least 12NO & 12NC + Auxiliary contacts for charged spring signal and motor control + Heating and lighting device		Required	Provided
Common local control cabinet : - For type of single-pole circuit breaker, the common local control cabinet (combined from local control cubicles of three single - pole circuit breaker) must be equipped. The common local control shall allow operating independently closing/opening on each phase and operating simultaneously closing/opening on three phases of circuit breaker. Common control cabinet with connecting cables for electrical coupling of control cabinet with operating mechanism cubicle on each phase		Required	Provided.
Cabinets of the CB		Aluminium Aluminium alloy/ stainless steel/ galvanized steel/ steel with coated by special painting; IP56 protection level	Aluminium cabinet - IP55 protection level
Steel structure
Height steel structure	mm	Height of structure and CB is at least 7500mm	Yes
Operating floor	Yes/No	Yes (if necessary)	Yes
Height operating floor	mm	Item A-1.4_Scope of Supply	Yes
Isolator		Porcelain, brown	Insulator shall be brown, hollow porcelain
Non-substantial requirements
First-pole-to-clear factor		1,3	1,3
Rated capacitive breaking current	A rms.	400	400
Number of spare auxiliary contact
Normally opened	pcs	> 12	12
Normally closed	pcs	> 12	12
Materials of terminals			Terminal pads provided
HV		Aluminium	Aluminium
Steel structure
Type		H figure type	Yes
Materials		Hot dip ganvalnized steel	Yes
Height of structure	mm	≥ 7500
Requirements for information
Rated times quanlities of circuit breaker
Opening time (no-load)	ms	offered by Tender	≤25
Closing time (no-load)	ms	- ditto-	≤80
Open-close time (no-load)	ms	- ditto-	≤300
Reclosing time (no-load)	ms	- ditto-	≤350
Close-open time (no-load)	ms	- ditto-	<70
SF6 gas
SF6 mass for one three-pole circuit breaker	kg	offered by Tender	18,1
Rated SF6 density	kg/m3	- ditto-	0.75Mpa(abs) at 20degC
First threshold of SF6 density	kg/m3	- ditto-	0.64Mpa(abs) at 20degC
Second threshold of SF6 density	kg/m3	- ditto-	0.61Mpa(abs) at 20degC
SF6 gas pressure density gauss		Yes	Yes
Max. noise level at 3 meters distance due to operation of circuit breaker	dB	offered by Tender	< 140 db
Max. impact load due to circuit breaker operation	kg	- ditto-	Refer GA drawings
Rated mechanical terminal load kN	kN	- ditto-	Vertical strength - 125daN
Total weight of complete circuit breaker	kg	- ditto-	2800 (approx)
Terminals (Dimensions : Holes - No. , size and spacing)			Aluminium terminal pads provided, 125 x 125 mm, 4 holes, 16mm dia, 50 mm spacing
HV		offerred by Tender	Yes
Drawings of steel structure	Yes/No	Yes	Yes

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