Capacitor Current Transformer High Voltage CVT 11kv 22kv 33kv 66kv 110kv 220kv 330kv 400kv 770kv

• Application: Electronic, Instrument, Position Sensor, Audio, Lighting
• Type: Voltage Transformer
• Phase: Three
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: MK-CVT2046
• Operation Condition: Outdoor
• Usage: Protection, Measurement
• Winding Form: Multilayer Honeycomb Type
• Insulating Medium: Insulating Gas
• Installation: Active Type
• Magnetic Circuit Structure: Combined Type
• Voltage Transformation Principle: Photoelectric Type
• Transport Package: Wooden Case
• Specification: Customized
• Trademark: Markevina or OEM
• Origin: China
• Production Capacity: 1000000/Year
• Package Size: 100.00cm * 150.00cm * 100.00cm
• Package Gross Weight: 500.000kg

Product Description

Capacitor Current Transformer, 11KV 22KV 33KV 66KV 110KV 220KV 330KV 400KV 770KV
Current Transformer,
Instrument Transformer for High Voltage Power Supply System 
 

Item A	765 kV Capacitor Voltage Transformer (CVT)	Unit	SCHEDULE A	SCHEDULE B
			Eskom	Technical
			requirements	guarantees for
				equipment offered
1	Manufacturer			TYD765/√3-0.0044H
2	Manufacturer's type number
3	Rated Capacitance	pF	4,400	4,400
	a) Value of upper capacitance (C1)	pF
	b) Lower Capacitance (C2)	pF
4	System conditions for which the
	capacitor shall be suitable
	a) Rated frequency	Hz	50	50
	b) System neutral		Effectively earthed	Effectively earthed
	c) Rated r.m.s. line-to-line voltage	kV	765	765
	d) Maximum continuous r.m.s. line-to-line Voltage	kV	800	800
5	Insulation
	a) Minimum crest value of full wave
	lightning impulse type test withstand
	voltage to earth at sea level on HV terminal	kV	2,100	2,100
	b) Characteristic of impulse wave	μs	1.2/50	1.2/50
	c) Minimum crest value of full wave
	switching impulse type test withstand
	voltage to earth at sea level on HV terminal	kV	1,550	1,550
	d) Characteristic of impulse wave	μs	250/2 500	250/2 500
	e) Minimum 60 s power frequency wet
	withstand type test voltage to earth at
	sea level on HV terminal	kV r.m.s.	975	975
	f) Minimum 60 s power frequency dry
	withstand routine test voltage at sea level
	on HV terminal	kV r.m.s.	975	975
	g) Partial discharge type test in accordance with
	IEC 61869-1		Complies	Complies
	h) Polution level
	1) Extra heavy - creepage distances	mm	Extra heavy	Extra heavy
	arcing distances	mm
6	Equipment suitable for carrier injection		Yes	Yes
7	High frequency capacitance and	%	-20  to +50 of rated C	-20  to +50 of rated C
	equivalent series resistance	Ωmax	40	40
8	Stray capacitance and stray conductance	pF max	200	200
	of low voltage terminals	μs max	20	20
9	Radio influence
	a) Test voltage kV	kV	508	508
	b) Maximum radio influence voltage	μV	2500	2500
10	Self resonant frequency of complete capacitor stack	MHz	>1	>1
11	LV terminals
	Minimum 60 s power frequency dry
	withstand routine test voltage on low
	voltage terminal	kV r.m.s.	10	10
12	Capacitor suitable for supporting a line trap		No	No
13	VT Secondary windings
	a) Protection (P1)		1	1
	b) Protection (P2)		1	1
	c) Metering (M)		1	1
	d) Total		3	3
14	VT mounted in base of CC (Single unit)		Yes	Yes
15	Rated CVT transformation ratios
	a) Protection winding (P1)		765/√3 kV to 110/√3 V	765/√3 kV to 110/√3 V
	b) Protection winding (P2)		765/√3 kV to 110/√3 V	765/√3 kV to 110/√3 V
	c) Metering winding		765/√3 kV to 110/√3 V	765/√3 kV to 110/√3 V
16	16 Rated burden of secondary windings
	a) P1 winding	VA	50	50
	b) P2 winding	VA	50	50
	c) M winding	VA	50	50
	d) Total burden	VA	150	150
17	Accuracy class of CVT
	a) P1 winding		3P	3P
	b) P2 winding		3P	3P
	c) M winding (within burden range 40 VA to 50 VA)		0.2M	0.2M
18	Transient response Class		T1	T1
19	Ferroresonance  (Ref 5.15 of 240-56030645)
	a) Amplitude		xxxxxxxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxxx
	b) Damping		xxxxxxxxxxxxxxxxxxx	xxxxxxxxxxxxxxxxxxx
20	Secondary short circuit current	A
	a) P1 winding
	b) P2 winding
	c) M winding
21	Maximum CVT rating as a power transformer	kVA
		Cos φ
22	Recommended maximum rating of fuses
	protecting the voltage transformer secondary windings	A
23	Class of insulation of VT
24	Rated voltage factor
	a) Continuous		1.2	1.2
	b) 30	s	1.5	1.5
25	Temperature category of CVT	°C	-10 to +40	-10 to +40
26	Maximum carrier frequency insertion loss of VT	dB	0.5	0.5
27	Minimum 60 s power frequency withstand routine
	test voltage on secondary windings	kV r.m.s.	2	2
28	CVT equipment with carrier earthing switch		Yes	Yes
29	Carrier drain coil
	a) i) Maximum insertion loss	dB	0.5	0.5
	or
	ii) Minimum impedance at carrier frequency	kΩ	10	10
	b) i) Maximum volt drop at rated frequency with
	associated CC energized at rated voltage	V	30	30
	or
	ii) Maximum 50 Hz impedance	Ω	20	20
	c) Minimum 50 Hz current carrying capacity
	i) Continuous	A r.m.s.	1	1
	ii) Short time for 0.2s	A r.m.s.	50	50
	d) Minimum impulse withstand voltage	kV	10	10
30	Low voltage terminal arrester
	Non linear arrester		Yes	Yes
	a) Rated voltage	kV
	b) Impulse sparkover voltage	kV
	c) Minimum 8/20 μs impulse discharge current	kA	5	5
31	Type of mounting		Upright on pedestal with	Upright on pedestal with
			integral VT as base unit	integral VT as base unit
32	High-voltage terminal
	a) Terminal material and finish
	b) Dimensions	mm	60 dia x 150 long	60 dia x 150 long
	c) Arrangement of terminals		Vertical	Vertical
	d) Number of terminals		1	1
	e) Withstand force without failure	kN	3	3
	f) Withstand force without distortion	kN	1.5	1.5
33	Secondary terminals
	a) Separate terminal box for secondary terminals
	with gland plate facilities		Yes	Yes
	b) Separate insulated bushing for connection to
	carrier equipment		Yes	Yes
34	Mass of complete CVT	kg
35	Outline Drawings showing:
	a) dimensions, fixing details and mounting arrangements		Yes	Yes
	b) Details of HV connecting terminals		Yes	Yes
	c) Earth terminal		Yes	Yes
	d) Details of secondary terminal		Yes	Yes
	e) Details of earth switch and carrier connection		Yes	Yes
	f) Nameplate		Yes	Yes
36	Type test reports (Capacitor Voltage Transformer)
	a) Temperature-rise test		Yes	Yes
	b) Chopped impulse test		Yes	Yes
	c) Switching impulse test		Yes	Yes
	d) Wet test for outdoor type transformers		Yes	Yes
	e) Radio influence voltage test (RIV)		Yes	Yes
	f) Transmitted overvoltage test		Yes	Yes
	g) Test for accuracy		Yes	Yes
	h) Verification of the degree of protection by enclosures		Yes	Yes
	i) Enclosure tightness test at ambient temperature		Yes	Yes
	j) Capacitance and tan δ measurement at power frequency		Yes	Yes
	k) Short circuit withstand capability test		Yes	Yes
	l) Ferro-resonance test		Yes	Yes
	m) Transient response test		Yes	Yes
	n) Mechanical test		Yes	Yes
37	Type test reports (Carrier frequency accessories)
	a) Drain coil - Impulse voltage test		Yes	Yes
	b) Drain coil - Voltage withstand test		Yes	Yes
	c) Voltage limitation device - Impulse voltage test		Yes	Yes