22.9kv 60Hz/50Hz Zigzag Transformer with Netural Grounding Resistor

• Application: Power, Instrument, Rectifier
• Phase: Three
• Core: Core-type Transformer
• Cooling Method: Oil-immersed Type Transformer
• Winding Type: Two-winding Transformer
• Certification: ISO9001-2000, ISO9001
• Model NO.: ZIGZAG
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer
• Transport Package: Carton with Wooden
• Specification: 15KV/27KV/38KV, 50HZ/60HZ,
• Trademark: HEMG
• Origin: China
• Production Capacity: 10000

Product Description

 
 
TECHNICAL CHARACTERISTICS.
TABLE OF TECHNICAL DATA TRANSFORMER ZIG ZAG 22.9 KV - SET NUEVA CAJAMARCA.

ÍTEM	CHARACTERISTICS	UNITY	REQUIRED VALUE	OFFERED VALUE
1	General
	Country		Specify	China
	Manufacturer		Specify	HEMG
	Manufacturing standards		IEC 60076-6 Acapite 10 IEC 60296	IEC 60076-6 Acapite 10 IEC 60296
	Type		Submerged in oil or other superior insulation.	Submerged in oil
	Main Nominal Voltage	kV	22.9	22.9
	Short-term neutral current	A	300	300
	Duration of neutral current of short duration	S	10	10
	Frequency	Hz	60	60
	Permanent neutral current	A	10	10
	Short time current to ground for 60 sec	KA	25	25
	Conservation system		Airtight with gas mattress	Airtight with gas mattress
	Connection		Zigzag	Zigzag
	Type of liquid		Natural Ester	mineral oil
	Insulation system		120° C (TUP Thermally enhanced paper)TUP	120° C (TUP Thermally enhanced paper)TUP
	Cooling Mode		ONAN	ONAN
2	Conditions of service
	Altitude	msnm	<1000	<1000
	Air temperature	°C	28°C anytime	28°C anytime
			25°C Monthly average of the warmest month	25°C Monthly average of the warmest month
			20°C Annual average	20°C Annual average
			5°C minimum	5°C minimum
	Degree of pollution	mm/kV	25	25
	Seismic disturbance	g	Specify	0.2
3	Temperature limits
	Thermal class	°C	105	105
	Heating of the upper liquid	°C	60	60
	Average warming of windings	°C	65	65
	Warmest spot heating	°C	78	78
4	Insulation level inside
	Higher Material Voltage	kV	24	24
	Primary impulse voltage	kVpico	50	50

 
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	Applied voltage	kV	125	125
5	External Insulation Level
	Higher Material Voltage	kV	36	36
	Primary impulse voltage	kVpico	170	170
	Applied voltage	kV	70	70
6	Guaranteed Parameters
	Lost in vacuum	W	500	500
	Excitation current	%	0.3	0.3
	Homopolar impedance	/fase	45	45
7	Weights and dimensions
	Dielectric liquid weight	kg	Specify	550
	Total weight	kg	Specify	1700
	Length x Width x Height	mm	According to design	1600x950x1300
8	Classification of atmosphere and coating
	Class (NBR 11388)		Class II	Class II
	system		Epoxi	Epoxi
9	Accessories
	Oil level indicator without contacts	1 Pz	Yes	Yes
	Contactless overpressure valve	1 Pz	Yes	Yes
	Drain valve	1 Pz	Yes	Yes
	Contactless bimetallic thermometer	1 Pz	Yes	Yes
	Earthing bar (5x30mm)	1 Pz	Yes	Yes
	Sudden pressure relay with a contact	1 Pz	Yes	Yes
	Grounding Terminals	1 Pz	Yes	Yes
10	Testing		IEC	IEC
11	Neutral Resistance
	Insulation		Air	Air
	Service		Exterior	Exterior
	Nominal Voltage	kV	22.9/√3	22.9/√3
	Intensity of continuous service	A	10	10
	Short-term Intensity	A	300-10 s	300-10 s
	Resistance	ohm	12	12
	Metal enclosure		AISI-304 stainless steel painted interior and exterior	AISI-304 stainless steel painted interior and exterior
	Degree of protection	IP	IP23	IP23
	Resistive material		Chrome-nickel steel AISI-304 Cr18/20%, Ni 18/10%; Fe resto304	Chrome-nickel steel AISI-304 Cr18/20%, Ni 18/10%; Fe resto
	Normative		IEEE Std- 32	IEEE Std- 32
	Construction		Stainless steel stamped grills AISI‐304 (Fe‐Cr18‐ Ni10), Joined by welding points and insulated from each other by ceramic separators. Stainless steel screws304,,.	Stainless steel stamped grills AISI‐304 (Fe‐Cr18‐ Ni10), Joined by welding points and insulated from each other by ceramic separators. Stainless steel screws
	Application		Neutral Residence Zig Zag Z	Neutral Residence Zig Zag

 

 

 
 
 

	Equipped with current transformer		Toroidal current transformer 300/1A,  1.5 VA	Toroidal current transformer 300/1A,  1.5 VA
12	Protection System
	Removable switch	kV	24 kV	24 kV
	Monitoring relay and fault detection with 50/51 and 50N / 51N function	GLB	Specify	satisfy
	Monitoring relay neutral resistance and resistance sensor..	kV	Specify	satisfy

 
 
TABLE OF TECHNICAL DATA TRANSFORMER ZIG ZAG 20KV - SET RIOJA.

ÍTEM	CHARACTERISTICS	UNITY	REQUIRED VALUE	OFFERED VALUE
1	General
	Country		Specify	China
	Manufacturer		Specify	HEMG
	Manufacturing standards		IEC 60076-6 Acápite 10 IEC 60296	IEC 60076-6 Acápite 10 IEC 60296
	Type		Submerged in oil or other superior insulation.	Submerged in oil
	Primary Nominal Voltage	kV	20	20
	Short-term neutral current	A	300	300
	Duration of the neutral current of short duration	S	10	10
	Frequency	Hz	60	60
	Permanent neutral current	A	10	10
	Short time current ground for 60 sec 60	KA	25	25
	Conservation system		Airtight with gas mattress	Airtight with gas mattress
	Connection		Zigzag	Zigzag
	Type of liquid		Natural Ester	mineral oil
	Insulation system		120° C (TUP Thermally enhanced paper)	120° C (TUP Thermally enhanced paper)
	Cooling Mode		ONAN	ONAN
2	Conditions of service
	Altitude	msnm	< 1000	< 1000
	Air temperature	°C	28°C anytime	28°C anytime
			25°C Monthly average of the warmest month	25°C Monthly average of the warmest month
			20°C Annual average	20°C Annual average
			5°C minimum	5°C minimum
	Degree of pollution	mm/kV	25	25
	Seismic disturbance	g	Specified	0.2
3	Temperature limits
	Thermal class	°C	105	105
	Heating of the upper liquid	°C	60	60
	Average warming of windings	°C	65	65
	Warmest spot heating	°C	78	78

 
35

 

 
 

4	Insulation level inside
	Higher material Voltage	kV	24	24
	Primary impulse voltage	kVpico	50	50
	Applied voltage	kV	125	125
5	External Insulation Level
	Higher material Voltage	kV	36	36
	Primary impulse voltage	kVpico	170	170
	Applied voltage	kV	70	70
6	Guaranteed Parameters
	Lost in vacuum	W	500	500
	Excitation current	%	0.3	0.3
	Homopolar impedance	/fase	40	40
7	Weights and dimensions
	Dielectric liquid weight	kg	Specify	500
	Total weight	kg	Specify	1600
	Length x Width x Height **	mm	According to design	1600x900x1300
8	Classification of atmosphere and coating
	Class(NBR 11388)		Class II	Class II
	System		Epoxi	Epoxi
	Surface Preparation		Sa 2 1/2	Sa 2 1/2
9	Accessories s
	Oil level indicator without contacts	1 Pz	Yes	Yes
	Contactless overpressure valve	1 Pz	Yes	Yes
	Drain valve	1 Pz	Yes	Yes
	Contactless bimetallic thermometer	1 Pz	Yes	Yes
	Earthing bar	1 Pz	Yes	Yes
	Sudden pressure relay with a contact	1 Pz	Yes	Yes
	Grounding Terminals	1 Pz	Yes	Yes
10	TESTING		IEC	IEC
11	Neutral Resistance
	Insulation		Air	Air
	Service		Exterior	Exterior
	Nominal Voltage	kV	20/  √ 3	20/  √ 3
	Intensity of continuous service	A	10	10
	Short-term current	A	300-10 s	300-10 s
	Resistance	ohm	12	12
	Metal enclosure		Stainless steel AISI- 304 Painted inside and out 304	Stainless steel AISI- 304 Painted inside and out
	Degree of protection	IP	IP23	IP23
	Resistive material		Chrome-nickel steel AISI-304 Cr18/20%, Ni 18/10%; Fe resto304	Chrome-nickel steel AISI-304 Cr18/20%, Ni 18/10%; Fe resto
	Normative		IEEE Std- 32	IEEE Std- 32
	Construction		Stainless steel stamped grills AISI‐304 (Fe‐Cr18‐ Ni10), Joined by welding points and insulated from each other by ceramic separators. Stainless steel screwsAISI‐304(Fe‐Cr18 Ni10),,.	Stainless steel stamped grills AISI‐304 (Fe‐Cr18‐ Ni10), Joined by welding points and insulated from each other by ceramic separators. Stainless steel screws

6

 

	Application		Neutral Resistance Zig Zag Z	Neutral Resistance Zig Zag Z
	Equipped with current transformer		Toroidal current transformer 300/1A,  1.5 VA	Toroidal current transformer 300/1A,  1.5 VA
12	Protection System
	Removable switch	kV	24 kV	24 kV
	Monitoring relay and fault detection with 50/51 and 50N / 51N function	GLB	Specify	satisfy
	Neutral resistance monitoring relay and resistance sensor.	kV	Specify	satisfy

 

Note:

1.- They must include all the complete equipment (including a Cell) to implement the artificial Neutral in 20 kV and 22.9 kV Bars of the Rioja and Nueva Cajamarca substations, respectively, to guarantee the operation of ground fault protection in networks.
 
2. - Includes the minimum necessary accessories for the commissioning and operation of the Transformer and equipment associated with the artificial Neutral.