46kv-23kv-2.3kv 15mva Mobile Substation with Semi-Trailer

• Customization: Available
• Application: Power
• Certification: ISO9001-2000
• Model NO.: MS72.5
• Usage: Power Transformer
• Trademark: HEMG
• Origin: China
• Production Capacity: 100

Product Description

	TECHNICAL SPECIFICATIONS		BUYERS	TECHNICAL SPECIFICATIONS OFFERED	SHEET NUMBER WHERE HAS DECLARED Technical Specification
a.	BRAND		Indicate	HEMG
b.	ORIGIN		Indicate	CHINA
c.	Year of production		No earlier than 2019	2019
d.	MANUFACTURING STANDARDS TO COMPLY		IEC 60076 Power Transformers   IEEE Std C57.12.10 - 2010 IEEE Standard Requirements for Liquid Immersed Power Transformers-   IEEE C57.12.90 Standard Test Code for Liquid-Immersed Distribution, Power and Regulating Transformers   IEC 60137        Bushing for alternating voltages above 1000 V   IEC 60214        On-Load Tap-Changers   IEC 60044-1 Current transformers   IEC 60099-4 Surge arresters   IEC 60529 Stabilized Power Supplies, DC Output	YES,COMPLY
e.	e.       TRANSFORMER FEATURES
E.1	Number of phases		3	3
E.2	Frequency		60 Hz	60HZ
E.3	Voltage High Voltage AT (H winding)		46 kV	46KV
E.4	Voltage (1) Nominal MT Medium Voltage (X winding)		23 kV	23KV
E.5	Voltage (2) Medium Voltage nominal MT (X winding)		6.3 kV	6.3KV
e.6	Maximum operating voltage phase-phase, system 46 kV, 15%		52.9 kV	52.9KV
e.7	Maximum operating voltage phase-phase, system 23 kV, 15%		26.45 kV	26.45KV
e.8	Maximum operating voltage phase-phase system 6.3 kV, 15%		7,25 kV	7.25KV
e.9	Type earthing system		Multigrounded	Multigrounded
e.10	Operation of power transformer		The processor may operate continuously 46/23 kV or 46 / 6.3 kV with a power of 15 MVA in any combination.	46/23kv-15mva, 46kv/6.3kv-15mva
e.11	internal insulation
	Nominal System Voltage RMS		Basic Insulation Level (BIL), CREST [kV], wave 1.2 / 50 microseconds [kV]
	6.3 kV		95	95kv
	23 kV		150	150kv
	46 kV		250	250kv
e.12	external insulation
	Nominal System Voltage RMS		Basic Insulation Level (BIL), CREST [kV], wave 1.2 / 50 microseconds [kV]
	6.3 kV		125	125kv
	23 kV		200	200kv
	46 kV		325	325kv
	Features trasformador (step down transformer)
	Operating conditions		46 / 23-6.3 kV	46/23-6.3kv
e.13	cooling rated capacity with full capacity		OFAF of 46/23 to 6.3 kV type (NOT other cooling system is supported) 15 MVA	OFAF OF 46.23K TO 6.3KV-15MVA
e.14	Temperature rise of the windings at an ambient temperature of 30 ° C
	Less than or equal to		60 ° C	60
	hottest spot (hot spot)		78 ° C	78
	AT connection		DELTA	DELTA
	MT connection		STAR (Grounded Wye)	STAR(GROUNDED WYE)
	Connection Group 46/23 - 6.3 kV		DYN1	DYN1
Selector 23 to 6.3 kV
E.15	Number of Positions		Must have two positions, one for 23kV and the other to 6.3 kV, plate not use switching is accepted, must be by a selector with external control.	ONE EXTERNAL CONTROL  TO SELECT 2 POSIGION FOR 23KV OR 6,3KV
E.16	Ground insulation level		It must be in the ability to withstand oscillating voltages and transferred result waves 1.2 / 50 microseconds (BIL) both connection 23 kV, and the 6.3 kV and ground insulation must be ≥ 350 kV (BIL).	GROUND INSULATION LEBEL BIL 350KV/(1.2/50MS) FOR 23KV AND 6.3KV AND GROUND INSULATION
E.17	Level of isolation between adjacent contacts		It must be in the ability to withstand oscillating voltages and transferred result waves 1.2 / 50 microseconds (BIL) both connection 23 kV, and the 6.3 kV and isolation between contacts must be ≥ 250 kV (BIL).	ISOLATIONG BETWEEN ADJACENT CONTACTS BIL 250KV/(1.2/50MS) FOR 23KV ,6.3KV AND ISOLATION CONTACTS
E.18	Signals to the hub		Positions 1 and 2 of the selector 23 to 6.3 kV must reach a controller where all parameters or signals that can be controlled transformer concentrate, and this should take their parameters and signals to a hub signals via protocol IEC 61850.	SEL
f.        WORKING CONDITIONS
F.1	Mounting height		3000m	3000M
F.2	Variation range of room temperature		It should operate in a range of 0 ° C to 40 ° C	0 ° C to 40 ° C
F.3	Wiring and auxiliary equipment		Tropicalizado for fungi and parasitic plants	YES
F.4	heating		Heaters in each of the boards on which equipment is installed risk of deterioration by moisture such as relays, terminal blocks, auxiliary contacts, etc.	YES
F.5	Degree of protection cubicles		IP 55	IP55
F.6	Degree of seismicity		0.5 g	0.5G
F.7	Installation		Exterior	OUTDOOR
f.8	Number of Bushing
	High Voltage AT		3	3
	Medium Voltage MT		4 (including the Neutral to 23-6.3 kV)	4
F.9	The positive sequence impedance reference temperature of 15 MVA, 350 kV BIL, 46 kV, and 75 ° C in center tap and the tap between the ends	≤8%		7.99%
F.10	Tap changer to be installed in high voltage windings (H windings) to 46 kV.	OLTC load tap changer ± 8 steps (1.875% each step), arc extinguishing vacuum insulation ground contacts wave 1.2 / 50 [BIL] least 350 kV.		V2CIII/HM
F.11	transformer type		Step down	SETP DOWN
			Oil immersed	OIL IMMERSED
			Suitable for outdoor installation.	SUITABLE FOR OUTDOOR
a.	g.       Rising temperatures, above ambient temperature of 30 ° C
G.1	Oil temperature		According to applicable standards (state value and standard).	≤55ºC/IEC
G.2	Hottest point temperature oil (hot spot)		According to applicable standards (state value and standard).	≤65ºC/IEC
G.3	Winding temperature		According to applicable standards (state value and standard).	≤65ºC/IEC
G.4	hottest spot winding temperature (hot spot)		According to applicable standards (state value and standard).	≤75ºC/IEC
h.       LOSSES
H.1	Lost uncharged (core) 100% of rated voltage		< 15 kW    Mandatory annex preliminary calculation	≤15KW
H.2	Load losses (copper) AT nominal position to power OFAF (15 MVA) at 75 ° C 46/23 kV		<72 kW   Mandatory annex preliminary calculation	≤72KW
H.3	Losses in rated load position (Copper), 15 MVA (OFAF), 75 ° C 46 / 6.3kV		<76 kW     Mandatory annex preliminary calculation	≤76KW
h.4	Impedance transformer to power OFAF (15 MVA) AT nominal position to 75 ° C		<8%   Mandatory annex preliminary calculation	≤8%
i.         BUSHINGS OFFERED
i.1	High voltage side 46 kV		Brand and product code	BFSD72.5-630ª/XND
i.2	Low voltage side 23 kV (these installations are used bushing at 6.3 kV)		Brand and product code (phases)	BFSD24-2500A/XND
			Brand and product code (neutral)	BFSD24KV-2500A/XND
j.         DIELECTRIC OF A FREQUENCY INDUSTRIAL BUSHING (BIL levels requested and considered correct height to 3000 m)
J.1	High voltage side 46 kV		350 kV	350
J.2	Low voltage side 23 kV		250 kV	250
k.        ADDITIONAL FEATURES OF THE TRANSFORMER BUSHING
k.1	Material bushings AT and BT		autolimpiable hydrophobic polymer	AUTOLIMPIABLE HYDROPHOTIC POLYMER
k.2	minimum distance between phases 46 [kV]		630 mm	1813MM
k.3	minimum distance between phases 23 [kV]		380 mm	600MM
k.4	Type bushings		Condenser type (for 46 kV) insulation class E type for AT and BT.	RIP/E-CLASS
			RIP (resin- impregnated paper)	RIP
			IEC 60137, IEC 60071-2	IEC60137.IEC60071-2
K.5	AT degree of pollution and BT		TYPE III	TYPE III
K.6	Terminals supply 46 kV		For copper and aluminum wire MCM 600-1000; IEC 60273	MCM600-1000,IEC60273
K.7	Terminals supply 23 kV - 6.3 kV		For copper and aluminum conductors 2 phase, MCM 500-1000; IEC 60273	MCM500-1000,IEC60273
K.8	Neutral Terminal Supply		For copper and aluminum wire Caliber as recommended factory	MCM500-1999,IEC60273
l.         Load Tap Changer OLTC
L.1	Load tap changer		Brand and product code	V2CIII.HM
l.2	Certificate of Compliance IEC 60214		append certificate	IEC60214
l.3	Location of OLTC		Side of 46 [kV]	60KV SIDE
L.4	Switching technology		in vacuo	VACUUM
l.5	Rated voltage regulation		8 steps of 1.875% w / u	+8X1.875%
L.6	Regulation under the nominal voltage		8 steps of 1.875% w / u	-8X1.875%
L.7	Location exchanger taps		Internal to the main transformer Cuba	YES
L.8	Step voltage supported		Indicate - V	862.5V
L.9	BIL complete isolation level OLTC		350 kV	350KV
L.10	Switch Type		Three phase
L.11	Overload capacity		Up to 10% of the nominal power, for times> 2 hours at c / or positions, being maximum or minimum voltage duration range.	10%
L.12	It allows manual operation		YES	YES
I.13	Location of the operating lever		Height of 1.10 meters from the base of the transformer, must have locking attachments installing locks or other securities.	YES
l.14	Protection		Protection load tap changer must be made with a flow relay, installed between the changer and the oil conservator. The relay flow test device must have clear visual indication and remote operation. The flow relay must be connected to the trip circuit of the transformer. His position will be sent via IEC 61850 protocol, the hub of signals.	QJ4  RELAY
L.15	Oil level indicator		The level indicator oil must provide an alarm signal if the level is below the threshold to a controller where all parameters or signals that can be controlled transformer concentrate, and this should take their parameters and signals to a hub signals via IEC 61850 protocol.	MT-160SK/MESSKO
L.16	Operation Counter		It shall indicate the accumulated number of operations performed.	500000
L.17	Position indicator		Position indicator must be sent a signal to the relay voltage regulation, which will record this information and take its parameters and signals to a hub signals via IEC 61850 protocol.	REG-D/a-Eberle
L.18	Selection Switch operation		Manual - Off - Auto - Remote	Yes
L.19	regulator voltage relay		(Voltage Sensitive Device), for automatic control of the operation exchanger taps under load. This device must be adjustable between 60 and 130 VAC.	REG-D/a-eberle
			The power supply equipment will be 125 VDC.	125vdc
			The relay will come protected against transient surges that can damage the relay or its internal programming.	yes
			It must be of the digital type, LCD type and resources to enable easy identification of the mode of operation and current position. The indications on the screen must be presented in Spanish.	In spenish
			Should be available in the controller itself, a key type "LOCAL" / "REMOTE" to enable remote commands are prevented when local operation. It must be provided a potential free contact for remote signal from the key position, either as a digital input to change its status.	yes
			It should be available in the controller itself, a key type "AUTO" / "MANUAL". It must be provided a potential free contact for remote signal from the key position, either as a digital input to change its status.	yes
			The voltage regulator should allow to choose the type of position signal takes between corona resistance, analog signal (4-20 mA) and BCD, which will be chosen in accordance with the convenience of installation in each application.	yes
			The voltage regulator should be allowed to choose the type of remote communication protocol IEC 61850 communication must be available via the RS-232 interface and / or USB.
			The regulator must comply with all requirements of IEC 61850.
			The controller box should be metallic, with available land connection and minimum degree of protection IP54 (in accordance with IEC 60529 standard).
			Compensating module voltage drop on the line (line-drop-compensator), with resistance elements and adjustable reactance that allow compensation voltage drop caused by the charging current.	yes
			It shall provide the module with the hardware needed for parallel operation of voltage control equipment installed in a similar transformer by the methods of master-follower and circulating currents.	yes
			Time delay relay to allow an adjustment range from 0 sec to 300 sec in the operation load tap exchanger in both directions, both lift and voltage reduction.	yes
			Conductors and terminal blocks (terminal blocks) that are required. should be assigned an additional 10% of terminal blocks.	yes
			Cubicles needed to accommodate all instruments and control devices, protection or basic elements of load tap exchanger.	yes
			The control cubicle must have heaters, controlled by thermometer and hygrometer, to prevent condensation of moisture on the instruments and interior lighting.	yes
			It must have a device to calibrate and regulate the voltage for values of bandwidth from 0.5%.	yes
			Low Voltage Lock	yes
			Overcurrent blocking	yes
			Automatic acceleration over voltage	yes
m.     COOLING SYSTEM
M.1	Cooling the OFAF be redundant (forced oil and forced air) and type pumps.		Control transformer cooling system must be done by electronic device microprocessor, said control system must ensure proper working temperature of the oil, so that the cooling does not operate with temperatures below 30 degrees. Expected logic operation should contemplate the percentage of rated power provided as a reserve. The manufacturer must provide type tests, checking in accordance with the following standards: IEC 61000, IEC 60068.	yes
m.2	Pumps should be flowmeter and be separated by reels expansion main line and their respective control valves by flanges.		Pumps must be able to withstand reinforced continuous transport and mechanical stresses of operation once the cooling system is fully assembled	yes
n.       Heat exchanger
n.1	Exchanger capacity		The heat exchanger must be able to maintain temperatures within the limits defined over an additional 20% booking dirt or clogging in the cooling body.	yes
n.2	Alarm and protection		Exchangers must have alarms and overload protection. The operation of these elements must be manually and automatically by action of thermometers, both temperature measuring oil as windings and the transformer must be provided with all necessary control elements in different conditions or states transformer cooling, they must have free auxiliary contacts for monitoring signals from the hub.	yes
o.       MATERIALS AND FINISHES
o.1	Cuba and expansion tank		ASTM A283 steel conforming
O.2	Operating pressures		> 25% at maximum pressure operation resulting oil preservation system used.	Yes
O.3	Test protocol		As stated in dd.4 tests.	yes
o.4	positive and negative maximum pressures		Indicate name plate	98Mpa(positive)max 133Mpa(negative)max
O.5	Isolation valves (expansion tank)		Indicate	DIN25/3PCS
O.6	consistent with the type of welding grade steel		Accordance with ASME Section 8, free of burrs and corrosive substances.	YES
O.7	Access bushing connections, CTs, OLTC, etc.		Manholes and handholes	YES
O.8	Accommodation packages		The surfaces where the packaging is placed must be machined smooth and flat and have sufficient rigidity to ensure adequate compression of the gaskets.	YES
O.9	Guides inside the tank		Guides must be provided in the tank to facilitate movement of the core and the windings when these are introduced or taken out of the tank.	YES
O.10	Studs welded to the tank grounding		3 (three) as follows: 2 (two) in the base of the walls of the main tank diagonally opposite sides; 1 (one) on deck or main tank walls near the neutral bushing.	YES
			You must accommodate a range between 2/0 AWG gauge driver 300 MCM.	YES
O.11	Cuba base		It is made of steel beams welded to the tank bottom. The base will have a minimum of four (4) points of support for cats (jacks), strong enough to raise the fully assembled and oil filled transformer.	YES
o.12	Cuba top cover		Should be subject only to bolts, welding is not supported.	YES
o.13	Tank integrity		Should remove any drilling or hole on the wall or tank cover. The offeror must fix or support accessories without drilling.	YES
o.14	Parts exposed to water accumulation		It is required by design to prevent the accumulation of water in the tank cover, in all caps and surfaces of the boards, and conservative changer tank.	YES
o.15	windings		Copper Able to withstand dielectric tests specified in the rating.	YES
o.16	Winding insulation		Class E 120 ° C	CLASS E120ºC
o.17	Nucleus		Type grain oriented sheet should be of high quality.	GRAIN ORIENTED SHEET
o.18	Core insulation		Class B 130 ° C	B130ºC
O.19	Insulation paper		Heat stabilized ANSI / IEEE C57.100	ANSI/IEEE C57.100
O.20	Noise levels		According to NEMA Standards Publication No. standard 1-993 (R2000).	75DB
o.21	Descriptive characteristics of the core
	Without deformation resistance	Short efforts, maneuvers, operation and transportation. In any case cause deformation.		YES
	Displacement of core laminations	Avoid travel by transportation, handling, operation, etc.		YES
O.22	Connection of the core
	column type and structure.	Grounded at a single point by easily accessible external connection, to check the insulation core.		YES
o.23	Ground connection removed
	Without oil	> 200 MW 1000 V DC to a moisture content of <70%		YES
	With oil	> 200 MW 2000 V DC		YES
o.24	Cutting burr mill	<0.025 mm		YES
O.25	Ability to withstand short circuit	Specify the level of short circuit that can withstand the transformer AT and MT.		YES
o.26	Thickness of the outer paint	> 140 microns		160MICRONS
O.27	wood used	IEC 61061		IEC61061
o.28	Core-drying process Coils	VAPOR PHASE		YES
o.29	Degree of Polymerization	> 1050 units		1100
		IEC 450		IEC
o.30	Control cables	Flexible soft copper K class, XLPE insulated, flame retardant, exceeding 14 AWG, operating temperature 105 ° C. The connections must be made on terminal blocks.		YES
o.31	Cable Labeling	Bidirectional according to the wiring sheets and delivered flat.		YES
o.32	external wiring	Rigid pipe must be used to wire all control signals and protection, supervision and communication transformer to the control board and flexible metal shell only for the arrival of drivers to accessories. The tubes were manufactured from galvanized steel ASTM A-653, A-527 ASTM standards.		YES
p.       Conveyors, MOBILIZATION AND ANCHOR TRANSFORMER
p.1	To raise the transformer	With the main tank should provide hooks or other attachments that allow lifting both the main tank and the transformer, fully armed and with oil. The surfaces of these additions must be free of sharp terminals that could damage the cables or ropes used.		YES
p.2	Mobilization transformer	This base should be designed to suit engineering manufacturer in order that the transformer ready for transport, with oil or oil being the center of gravity does not fall outside the base when an inclination of the transformer 15 degrees is made with to the horizontal. The mobile substation must be designed for movement on the roads of Ecuador, so the maximum degree of vibration is indicated support and the trailer must be designed to absorb this vibration, without decreasing the useful life of equipment. The allowable speed of the mobile substation will be to circulate at 40 [km / h] pavement, for which it must be defined in the detailed engineering elements to avoid vibration or movements that cause damage to the transformer life.		YES
p.3	anchoring	The transformer must be anchored to the platform, it must be supplied with your system antisísmico anchor (Anti-Earthquake Clamping Device), the supplier shall establish as a method of calculating the guidelines established by the IEEE 693-2005 standard, with a level of qualification seismic 0.5g (Moderate). The contractor must provide planes with details of anchors and mechanical stresses to be considered in detail by manufacturing, which justifies the transformer unit and platform not suffer slipping and vibration is minimized motion.		YES
p.4	BARRIERS	The entire substation will have guardrails for circulation, the same as serve as protection and difficult access to computers when they are energized.		YES
q.       REFRIGERATION
Q.1	Kind	OFAF heat exchanger type (Oil Forced Air Forced).		YES
		Microprocessor controlled electronic device which ensures operating temperatures <30 ° C.		YES
r.        ASSOCIATED WITH FANS COOLING SYSTEM
r.1	Operation	Exchanger fans must be within the noise limits transformer; Three-phase voltage supply must be 210/121 volts.		YES
R.2	Protection	Fans must have alarms and overload protection, independent.		YES
R.3	Functioning	The operation of these elements must be manually and automatically by action of thermometers, both temperature measuring oil as windings and the transformer must be provided with all necessary control elements in different conditions or states transformer cooling, they must have free auxiliary contacts from the SCADA monitoring and / or control center EEQ.		YES
R.4	start	It is required to start by two steps by means of auxiliary relays to be installed to prevent multiple motors to start simultaneously.		YES
s.        THERMOMETER OIL TEMPERATURE MEASUREMENTS
S.1	Oil thermometer (OTI)	Brand and code		MT-160SK.EMSSKO
S.2	Degree of protection	IP55		IP55
S.3	MPE	+/- 2 ° C		(+/-2ºC0
S.4	Rank	0-120 ° C		0-120
S.5	sensitive element	The sensitive element of the thermometer (temperature sensitive bulb) must be located at the top of the tank, at the site where the maximum temperature of the oil is obtained.		YES
s.6	Measuring principle	The principle of temperature measurement should be done by Bourdon type system, with a capillary installed in a thermowell 1 ".		YES
s.7	Thermometer Microswitchs	The meter of oil temperature (OTI) should have a transmission system of the type temperature organic liquid pressure (Organic liquid filled pressure system), with adjustable microswitches contact ungrounded (contacts nongrounded), these will be used in the following purposes: Contact 1. Start of stage I of fans, adjustable between 65 degrees Celsius and 90 degrees Celsius. Contact 2. Start stage II of fans, adjustable between 65 degrees Celsius and 90 degrees Celsius. 3. Contact alarm signal on oil temperature, adjustable between 85 degrees Celsius and 115 degrees Celsius. Contact 4. Alarm signal and power circuit breaker tripping, adjustable between 95 degrees Celsius and 115 degrees Celsius.		YES
s.8	Additional transmission of temperature value	The meter of oil temperature (OTI) must have an additional transmission system temperature value to a controller and this should send information via IEC 61850, a switch communications to be sent to central control EEQ and / or SCADA.		YES
t.        MEASURING SYSTEM OF TEMPERATURE WINDING
T.1	Thermometer windings (WTI)	Brand and code		MT-160STK/MESSKO
T.2	Degree of protection	IP55		IP55
T.3	MPE	+/- 2 ° C		+/- 2 ° C
t.4	Rank	0-120 ° C		0-120 ° C
T.5	Measurement type	thermal imaging, located in a phase of one of the windings.		YES
T.6	Thermometer Microswitchs	It must have four sets of the type microswitch contacts, ungrounded (nongrounded), which will be used for the following purposes. Contact 1. Start of the first stage fan, adjustable between 65 degrees Celsius and 90 degrees Celsius. Contact 2. Start the second stage fans, adjustable between 75 degrees Celsius and 105 degrees Celsius. Contact 3. alarm signal on winding temperature, adjustable between 90 degrees Celsius and 140 degrees Celsius. Contact 4. Alarm signal and power circuit breaker tripping, adjustable between 95 degrees Celsius and 140 degrees Celsius.		YES
t.7	Contacts Thermometer	Oil indicator (OTI) as the winding temperature indication (WTI), for different applications must be factory calibrated.		YES
T.8	Additional transmission of temperature value	The temperature gauge windings (WTI) must have an additional transmission system temperature value to a controller and this should send information via IEC 61850 protocol.		YES
u.       PRESSURE RELIEF DEVICE
u.1	Pressure relief valve	Brand and code		MPREC/MESSKO
u.2	In case of overpressure	a tubular system is included to drive the oil.		YES
u.3	Activation time	<2ms		YES
u.4	Signal transmission	This device signals will be entered signal to a hub where all mechanical transformer protection focus, and this information should be sent via IEC 61850 protocol.		YES
u.5	Safety valve	Cover involving the entire valve, avoiding interference climate and does not interfere with viewing semaphore or flag.		YES
		You must have at least 4 contacts for alarm, and connection must be in junction box with IP-65 grade.
PRESERVATION OF OIL SYSTEM v.       SYSTEM EXPANSION TANK OR CONSERVATIVE
v.1	Pressure support	Equipment preservation oil must withstand a pressure of absolute vacuum at sea level or an internal pressure of 103 kPa for 24 hours, without permanent deformation.		YES
v.2	Expansion tank accessories	It must additionally include the following: •      A valve for filter placed on top. •      A valve serves to sampling, filtering and drained total positioned at the bottom. •      It must have equalization valve between the diaphragm synthetic rubber and the expansion tank. •      A connecting pipe between the main tank and the conservator tank to couple Buchholz relay. •      A magnetic oil level indicator. •      A record that allows cleaning and inspection inside the conservator tank. •      To prevent oil contact with the atmosphere, it should be provided a system diaphragm seal synthetic rubber resistant to oil in the conservator tank (elastic bag). •      It must have a vent or air dryer silicagel (Dehydrating Breather), they will not be accepted devices using silica gel with cobalt content and must be maintenance free.		YES
w.      ACCESSORIES
w.1	Valves Cuba, exchanger, expansion tank, OLTC	Bronze or brass and flanged connection
W.2	Level indicator transformer oil	Brand and indicate code		MTO/MESSKO
		The oil level indicator should have auxiliary contacts ungrounded (nongrounded contacts) to alarm and trip, to point out that the minimum acceptable oil level has been reached.		YES
		The oil level indicator must allow replacement of the display unit without changing or removing the measuring unit.		YES
		An additional signal, the oil level should enter into a hub and this will be sent via IEC 61850 protocol.		YES
W.3	Oil gauge OLTC	Brand and indicate code		I-J INTERNATIONAL
W.4	valves	The transformer must be supplied with special bronze valves for electrical equipment for the following purposes: •      Sampling oil from the lower part of the tank. •      To lower connection filter press (filter press), and total oil drain tank (2 inches). •      For upper press connection filter (2 inches). •      To fully isolate each pump exchanger for maintenance. •      To drain oil exchanger. •      To isolate each of the tanks attached to the main tank, p. Axis.; the curator of the main tank. •      Each of the valves must be equipped with blind flange.		YES
W.5	Pressure gauge and vacuum	Brand and indicate code The scale of the gauge should be between 0.7 kilograms per square centimeter above atmospheric pressure and 0.7 kilograms per square centimeter under atmospheric pressure.		YES
		Suitably sized dial diameter about 10 cm and conveniently located for visibility distance.
		Send signals to monitor the transformer and send it in IEC 61850, a transformer monitoring equipment.
W.6	Buchholz relay	Indicate brand and code		BC80/EMB
		You must have alarm contacts operated by accumulation of gases produced by an incipient fault and trip contacts to get out of the transformer through the tripping of circuit breakers, high and medium voltage when a large amount of gas starts to flow due to an internal fault in the transformer or regulator.		YES
		Operating temperature of -50 ° C to + 80 ° C. Safety glass must be tempered with UV filter. Must have two windows on each side of the relay for inspection floats independently.		YES
		Alarm contacts (2 reversible) and shooting (2 reversible) should not have contact with the transformer oil. Floats must be solid. IP55. It must be supplied with a test report indicating results team functional testing and sealing with helium gas.		YES
		With test button for all contacts for gas, oil level and flow. In the case of operation flow, the float must remain in the actuated position, clearly indicating its operation.		YES
		With reset option, sampling and test functionality option for air injection.		YES
		This device signals will be entered signal to a hub where all mechanical transformer protection focus, and this information should be sent via IEC 61850 protocol.		YES
w.7	Control cabinet	IP 55 IEC 60259		YES
W.8	Impact Recorder	For transportation from the factory to the site of delivery: digital display (for sample results) Acceleration X / Y / Z IP55. This element will be delivered to the provider after analyzing the data.		YSD-2200,108X48X30
x.       TRANSFORMER OIL
X.1	Oil	Indicate brand and product code		45#/KUNKUN
x.2	Quantity	The amount required for the transformer plus 10%		YES,10% PLUS
x.3	Rule	IEC 60296 and IEC 60156		IEC60295,IEC60156
x.4	PCB content and PDD'S	None		NONE
x.5	Mineral oil	inhibited		INHIBIED
x.6	New	YES		YES