TL-IEC2
$176.00
IEC 320 C13 Power Socket Hipot & Ground Bond Test Lead Set. This test lead set makes a convenient connection to the IEC-320 C13 style power inlet of many products. The HV lead is connected to both the line and neutral pins, while the earth pin is connected to source- & sense- terminals.
Vitrek V7X Series – No Other Hipot Tester can Touch ’em
For nearly 25 years, an obsessions has driven us to keep improving how hipot testers perform – speed, accuracy, user safety and reliability have been our driving force. Building a better hipot tester is in our DNA – it drove us to successfully engineer the first 4-in-1 safety tester back in 1990 and it has driven us to redefine performance in low cost hipot testers today.
The Hipot Experience has been Redefined
Our goal for the V7X series has been to achieve the unheard of. To provide state-of-the-art
performance in a powerful yet compact multi-function hipot tester – and do it at an entry level price. From our easy-to-use Touch user interface, to its ultra-reliability, high efficiency, fan free design – the V7X provides unrivaled performance. Have we met our goal? You be the judge – compare the V7X to our made in China competitors and see how well American engineering stands up. We build Vitrek Hipot Testers. What’s on your production line?
V75 with Built-in Hipot Switching
For high voltage cable & component testing – choose the V75 with 16 channels of built-in high voltage switching. With the versatile V75, you can test hipot or IR for any combination of up to 8 test points and you can measure low resistance (from .001 ohm to 60K ohms) on up to 8 conductors. All automatically with a single touch and all from a single compact tester. For requirements exceeding 8 points, the V7X can control up to 4 Vitrek 964i 64 channel HV Switching Systems – providing up to 256 channels of Hipot test capability. Simple, fast, automatic multi-point hipot – make the switch to the Vitrek V7X. You will be glad you did.
Product Features and Benefits
- 4.3″ Color Touch Display – Easy To Use Intuitive User Interface
- 6 Functions Choose From – AC/DC Hipot, IR, Ground Bond, Continuity & Built-in Switching
- Made in the USA – Designed & Built in San Diego CA
- Compact, Lightweight, Rugged, Fan Free, Fast (100mS min test time) & Accurate
- 5KV AC/DC Hipot, 20mA max source current
- Ground Bond 1-30A RMS (42 A peak), 100µΩ Resolution
- 100 nano-Amp Leakage Current Resolution
- Low Cost of Ownership – 2 Year Calibration Interval
- USB 2.0, Serial/RS232, Digital I/O Interfaces are Standard
- Continuously Variable Insulation Resistance 20-5000V, 450GΩ Max
- Multi Mode IR with Steady/Rising Pass Mode
- Test Memory Stores up to 999 Steps and 60 Test Sequences
- Internal Self Test Fully Exercises Output and Verifies Current Accuracy
- Pre-Programmed Daily Verification Test With Optional PVD Test Load
- 150µS Safety Shutdown
- Ramped Discharge Capability
- Selectable ARC Detection 1-20mA
- Meets UL, CSA, IEC Safety Tester Requirements
- CE Safety Mark Certified to EN61010
- 2 Year Parts & Labor Warranty
Front Panel Features
- 4.3″ Color Touch Display, All of the info you need – Super Easy to Use
- Large, Bright LED Caution Testing Indicator
- Safety Locked HV Terminal for Hipot & IR
- Low Profile High Current Binding Posts for Ground Bond
- Independent LED Pass/Fail Indicators
- The Brand You Trust on Your Production Line
- Convenient Front Panel Power Switch
- Ultra-High Reliability Start/Stop Switches
Rear Panel Features
- Digital I/O with Safety Interlock
- Controls up to 4 HV Scanners (N/A on V75 with built-in HV Switching)
- USB 2.0 High Speed Universal Serial Port
- RS232 Serial Port with Selectable baud rate up to 115Kbaud
- Ultra-Quiet, Ultra-Reliable, High Efficiency Fan Free Design
- Heavy Duty 100% Silicone Protective Bumpers
- Advanced Design, Built-in Quality – Made in the USA
- Optional Rear Panel Terminals or on V75 16 terminals for Hipot/IR & Continuity
- Rugged V7X with Drop Resistant Duty Silicone Bumper
V7X Test Step Specifications
Accuracy specifications shown are valid at temperatures within ±5C of the calibration temperature. Outside of this range add 10% of the specification per C.
Decrease maximum ACW, DCW and IR voltages by 2.5%/1000ft above 5000ft ASL altitude.
All accuracy specifications are valid at the V7X terminals, and as such do not include any effects due to user wiring resistances, leakages or coupling, or other user generated leakages or interference.
Resolutions shown are for displayed measurements, limits and settings. Internally all measurements have typically 10x better resolution and all limits and settings are implemented with the same resolution as entered by the user. Via an interface, all measurements are reported with 5 digit resolution.
Generally, user settings can be defined with up to 4 digit resolution and a selection of units (e.g. µA or mA) from the front panel; or with up to 6 digit resolution from an interface.
Unless otherwise specified, user terminated dwell/test periods can extend for up to 2 days.
Not all test types are available in all models of V7X.
ACW Test Steps
Voltage
10 to 5000Vrms (1V resolution) sinewave at 50 or 60Hz +/- 0.05%
Model V75: 10 to 2000Vrms (1V resolution) sinewave at 50 or 60Hz +/- 0.05%
Model V76: 10 to 2500Vrms (1V resolution) sinewave at 50 or 60Hz +/- 0.05%
1%+5V accuracy under all allowed loading conditions
Max. Load
20mArms (10mArms max resistive for >10sec), reduced by 20µA per V below 1000V, reduced by 10µA per V above 4000V
Leakage Accuracy
DC coupled, true RMS, 10Hz-4KHz 3dB bandwidth
DUT isolated (<1.1mA) : 1%+5µA (1µA resolution) DUT isolated (>1.1mA) : 1%+30µA (10µA resolution)
DUT grounded : 1%+30µA+(4µA per KV) (10µA resolution)
ARC Limit
Disabled or up to 30mA (1mA resolution)
Ramp
0 to 99.9sec (0.02sec resolution)
Dwell
0.1 to 9999sec (0.1sec resolution) or user terminated
Shutdown
Excessive HV terminal current : within 1ms
User Stop : within 2ms
Interlock opened (if enabled) : within 2ms
Load Breakdown (sudden uncontrolled increase of load current): within 150µs
Leakage Limit (if enabled) : within 100ms
ARC Limit (if enabled) : within 1ms
User Settings
Voltage Level
Frequency
DUT Isolated/Grounded
Min. Leakage Limit (can be disabled)
Max. Leakage Limit (can be disabled)
ARC Limit (can be disabled)
Ramp Period
Dwell Period
Ramp Down Fast/As Ramp
Stop/Continue Sequence on Failure
DCW Test Steps
Voltage
20 to 5000VDC (1V resolution)
Model V75: 20 to 3000VDC (1V resolution)
Model V76: 20 to 2750VDC (1V resolution)
1%+5V accuracy under all allowed loading conditions
Max. Load
<2000V : 10mA (reduce by 10uA per Volt below 1000V), <0.25uF capacitance
2000-3000V : 7mA (reduce by 4µA per volt above 2000V), <0.1µF capacitance
3000-4000V : 3mA (reduce by 1µA per volt above 3000V), <0.05µF capacitance >4000V : 2mA (reduce by 0.5µA per volt above 4000V), <0.03µF capacitance
Leakage Accuracy
DUT resistive, isolated (<200µA) : 1%+1µA (0.1µA resolution)
DUT resistive, isolated (0.2-1.5mA) : 1%+2µA (1µA resolution)
Otherwise : 1%+20µA (10µA resolution)
ARC Limit
Disabled or up to 30mA (1mA resolution)
Ramp
DUT resistive : 0.1 to 99.9sec (0.02sec resolution)
DUT capacitive : 1.0 to 99.9sec (0.02sec resolution)
Dwell
0.1 to 9999sec (0.02sec resolution) or user terminated
Ramp Down
0sec or as defined for ramp
Discharge Internal
50KΩ discharge load and 0.03µF capacitive energy
Shutdown
Excessive HV terminal current : within 1ms
User Stop : within 2ms
Interlock opened (if enabled) : within 2ms
Load Breakdown (sudden uncontrolled increase of load current): within 150µs
Leakage Limit (if enabled) : within 100ms
ARC Limit (if enabled) : within 1ms
User Settings
Voltage Level
DUT Isolated/Grounded
DUT Resistive/Capacitive
Min. Leakage Limit (can be disabled)
Max. Leakage Limit (can be disabled)
ARC Limit (can be disabled)
Ramp Period
Dwell Period
Ramp Down Fast/As Ramp
Stop/Continue Sequence on Failure
IR Test Steps
Voltage
20 to 5000VDC (1V resolution)
Model V75: 20 to 3000VDC (1V resolution)
Model V76: 20 to 2750VDC (1V resolution)
2.5%+5V accuracy under all allowed loading conditions
Lowest IR
<1000V : 150kΩ 1000-2000V : 400kΩ 2000-3000V : 2MΩ >3000V : 10MΩ
Highest IR
DUT resistive, isolated : 90MΩ per V
DUT capacitive, isolated : 2MΩ per V
DUT grounded : 0.1MΩ per V
Max Capacitance
<1000V : 2uF 1000-2000V : 0.25uF 2000-3000V : 0.1uF >3000V : 0.03uF
5mA maximum charging current
IR Accuracy
<5% of Highest IR: 2% (0.1% resolution) 5-15% of Highest IR: 5% (1% resolution) 15-30% of Highest IR: 10% (1% resolution) >30% of Highest IR: 20% (1% resolution)
Test Time
0.1 to 9999sec (0.1sec resolution) or user terminated
Test Delay
0.0 to 9999sec (0.1sec resolution)
Discharge
Internal 50KΩ discharge load and 0.03µF capacitive energy
Shutdown
Excessive HV terminal current : within 1ms
User Stop : within 2ms
Interlock opened (if enabled) : within 2ms
Load Breakdown (sudden uncontrolled increase of load current): within 150µs
IR Limit (if enabled) : within 100ms
ARC Limit (if enabled) : within 1ms
User Settings
Voltage Level
DUT Isolated/Grounded
DUT Resistive/Capacitive
Min. IR Limit
Max. IR Limit (can be disabled)
Ramp Period
Dwell Period
Delay Period
Dwell End On Pass/Fail/Time/Steady or Rising
Ramp Down Fast/As Ramp
Stop/Continue Sequence on Failure
CONT Test Steps
Method
2 terminal measurement (DC)
Test Current
<10.5mA
Test Voltage
<4.15V
Range
0Ω to 60KΩ
Accuracy
<0.75Ω : 1.5% + 0.015Ω (0.001Ω resolution)
<13Ω : 1.5%+0.02Ω (0.01Ω resolution) 13-1000Ω : 3%+1Ω (1Ω resolution) 1K-4KΩ : 4% (10Ω resolution) 4K-13KΩ : 5% (100Ω resolution) >13KΩ : 10% (1KΩ resolution)
Test Time
0.06 to 9999sec (0.02sec resolution) or user terminated
CONT Leakage
DCW or IR test steps : <0.1µA
ACW test steps : <2.5µA per KV setting (DUT isolated), <5µA (DUT grounded)
User Settings
Min. Limit (can be disabled)
Max. Limit (can be disabled)
Resistance Offset
Test Time
Stop/Continue Sequence on Failure
GB Test Steps
Method
4 terminal measurement (AC)
Current
1 to 30Arms (0.01A resolution) sinewave at 50 or 60Hz +/- 0.05%
3%+10mA accuracy
Compliance
>4.5Vrms at all currents
Open Circuit
<10Vpk
DUT Ground
DUT may be isolated from ground or be grounded. If grounded, must be within 3Vpk of V7X ground.
Range
Max resistance determined by max compliance and test current
Accuracy
<2A : 3.5%+3mΩ (1mΩ resolution) 2-6.5A : 3%+2mΩ (1mΩ resolution) >6.5A : 2.5%+1mΩ (0.1mΩ resolution)
Test Time
≤20A : 0.1 to 9999sec (0.02sec resolution) or user terminated
>20-25A : 0.1 to 180sec (0.02sec resolution) or user terminated
>25A : 0.1 to 120sec (0.02sec resolution) or user terminated (50% max duty cycle)
GB Leakage
DCW or IR test steps : <1µA
ACW test steps : <5µA per KV setting (DUT isolated), <10µA (DUT grounded)
User Settings
Current Level
Frequency
Min. Limit (can be disabled)
Max. Limit
Resistance Offset
Test Time
Stop/Continue Sequence on Failure
PAUSE Test Steps
Pause Delay
0.1 to 9999sec (0.02sec resolution)
User Settings
Pause Delay
HOLD Test Steps
Timeout
0.1 to 9999sec (0.02sec resolution) or none
User Settings
Timeout (can be disabled)
Message (two lines)
SWITCH Test Steps
Execution Time
User Settings
Sub Type (Model V75)
Relay states for each relay in the specified Sub Type (Model V75)
Relay states for each relay in each switch unit (4 max switch units) (All other models)
Dimensional Specifications
137mmH x 248mmW x 284mmD (5.4″ x 9.75″ x 11.2″)
V70, 71, 73, 75, and 79: 6.8kg (15lb) net, 7.9kg (17.5lb) shipping
V74: 7.9kg (17.5lb) net, 9.1kg (20lb) shipping
Dimensions and weights shown are nominal
Environmental Specifications
Storage Environment: -20 to 75C (non-condensing)
Operating Environment: 0 to 40C, <85% RH (non-condensing), Pollution Degree 2
Operating Altitude: 0 to 10000ft ASL, reduced maximum voltage capability above 5000ft
Power Source Specifications
Internally set for 105-125Vrms or 210-250Vrms, 45-65Hz, 200VA maximum
Ordering
Below prices in US$ are for destinations in North America with terms of prepay, net 30 days (OAC) and accepted credit cards. For shipment beyond North America or terms beyond 30 days, please contact the factory for a quotation. If you require rush/expedited shipment please contact Vitrek at (858) 689-2755 or email info@vitrek.com
V7x Series Hipot Testers
| Thumbnail | Name | Short description | Price | Buy |
|---|---|---|---|---|
 | V70 | Vitrek AC Hipot Tester. 5KVAC Electrical Safety tester with continuity. Comes with: TL-209, Power Cord, Operating Manual, QTPro-7 45 Day Free Trial, NIST Traceable calibration certificate without data. ISO 17025 accredited calibration certificate with data and uncertainties available with purchase at reduced price with part number: ISO-CALN-V7X. | $1,528.00 | |
| V71 | Vitrek V71 - AC/DC Hipot Tester. 5KVAC/DC Electrical Safety tester with continuity. Comes with: TL-209, Power Cord, Operating Manual, QTPro-7 45 Day Free Trial, NIST Traceable calibration certificate without data. ISO 17025 accredited calibration certificate with data and uncertainties available with purchase at reduced price with part number: ISO-CALN-V7X. | $2,000.00 | |
| V73 | AC/DC/IR Hipot Tester. 5KVAC/DC/IR Electrical Safety tester with continuity. Comes with: TL-209, Power Cord, Operating Manual, QTPro-7 45 Day Free Trial, NIST Traceable calibration certificate without data. ISO 17025 accredited calibration certificate with data and uncertainties available with purchase at reduced price with part number: ISO-CALN-V7X. | $2,353.00 | |
| V74 | Vitrek AC/DC/IR/GB Hipot Tester. 5KVAC/DC/IR & 30A GB Electrical Safety tester with continuity. Comes with: TL-209, K-2R, Power Cord, Operating Manual, QTPro-7 45 Day Free Trial, NIST Traceable calibration certificate without data. ISO 17025 accredited calibration certificate with data and uncertainties available with purchase at reduced price with part number: ISO-CALN-V7X. | $3,544.00 | |
| V76 | AC/DC/IR Scanning Hipot Tester. 2500VAC/2750VDC/IR/Continuity Electrical Safety tester with built-in switching for up to 8 channels of HV, 8 channels of return, and 8 channels of continuity. Comes with: TL-209, Power Cord, Operating Manual, QTPro-7 45 Day Free Trial, NIST Traceable calibration certificate without data. ISO 17025 accredited calibration certificate with data and uncertainties available with purchase at reduced price with part number: ISO-CALN-V7X. | $3,544.00 | |
| V77 | Vitrek AC/DC/IR Scanning Hipot Tester with Ground Bond Test. 2500VAC/2750VDC/IR/Continuity Electrical Safety tester with built-in switching for up to 8 channels of HV, 8 channels of return, and 8 channels of continuity. Ground Bond available on front panel only. Comes with: TL-209, Power Cord, Operating Manual, QTPro-7 45 Day Free Trial, NIST Traceable calibration certificate without data. ISO 17025 accredited calibration certificate with data and uncertainties available with purchase at reduced price with part number: ISO-CALN-V7X. | $4,424.00 | |
 | V79 | Ground Bond Tester. 30 Amp 4-Wire Ground Bond Electrical Safety tester with continuity. Comes with: K-2R, Power Cord, Operating Manual, QTPro-7 45 Day Free Trial, NIST Traceable calibration certificate without data. ISO 17025 accredited calibration certificate with data and uncertainties available with purchase at reduced price with part number: ISO-CALN-V7X. | $1,764.00 | |
V7x Accessories
| Thumbnail | Name | Short description | Price | Buy |
|---|---|---|---|---|
 | QTE-7 | QT Enterprise Sofware License Key for use with V7x products | $1,150.00 | |
 | ISO-CALN-V7X1 | ISO 17025 Accredited Cal Cert (with purchase). Upgrade from a NIST traceable cal cert with no data to an accredited calibration certificate with data and uncertainties. | $176.00 | |
 | SE-5037-7 | Vitrek SE Series Safety Enclosure - SE-5037-7 - V7x Compatible: Outside: 50”w x 37”d x 50”h with legs, Inside:47”w x 34.5" d x 15.75”h, Work Surface 31.5" | $7,338.00 | |
 | SE-3624-7 | Vitrek SE Series Safety Enclosure - SE-3624-7 - V7x Compatible: Outside: 36”w x 24”d x 16”h Inside: 33”w x 21” d x 14.625”h | $3,850.00 | |
| SE-2420-7 | Vitrek SE Series Safety Enclosure - SE-2420-7 - V7x Compatible: Outside: 24”w x 20”d x 12.5”h Inside: 22”w x 18” d x 11”h | $2,750.00 | |
 | SE-MAT | 3' x 4' Optional Insulation Mat for use with SE Series Safety Enclosures | $191.00 | |
| QT Pro-7 | QuickTest Pro Software. Graphical Test Automation Software for Windows 8 through XP. Easily develop & store test sequences, automatically run tests, view, print, save and export results. Supports all V7X series units and 964i HV Scanner. | $418.00 | |
 | GBP1 | 40A Handheld Ground Bond Probe. Single Probe. 4 ft length for connection to Ground Bond terminals. Designed to be used with standard K-2R lead set or additional GBP1. | $151.00 | |
 | AVPD-74 | Daily Performance Verification Device. Many product safety agencies require that an electrical safety tester undergo daily verification of performance. The APVD-74 has built-in test loads for all V7X hipot & GB units. Just hook it up and run the automatic verification sequence. It’s that simple. | $285.00 | |
| APVD-79 | Daily Performance Verification Device. Many product safety agencies require that an electrical safety tester undergo daily verification of performance. The APVD-79 has built-in test loads for all V7X GB units. Just hook it up and run the automatic verification sequence. It’s that simple. | $237.00 | |
 | RS-2 | Female to Female Null Modem RS232 (Serial) Cable 6ft | $54.00 | |
 | USB-1 | USB A to B Cable 6ft (95X/4700 to printer or V7X/PA900 to PC) | $43.00 | |
| TL-30 | Heavy Duty HV Alligator Clip Test Lead Set. 4ft leads. | $116.00 | |
 | TL-109 | 5KV HV Pencil Probe Test Lead Set. 4ft leads. | $116.00 | |
 | TL-IEC3 | IEC 320 C13 Power Socket Ground Bond Only Test Lead Set. This test lead set makes a convenient connection to the IEC-320 C13 style power inlet of many products. The earth pin is connected to source- & sense- leads. 4ft leads. *White Hipot test lead shown in photo is not included with TL-IEC3. | $151.00 | |
 | TL-UP3 | Universal Power Receptacle GB Only Test Adaptor. Receptacle accepts popular North American, European & Asian style power cords – for easy Ground Bond test connection of corded products. 4ft leads. | $200.00 | |
 | K-1 | 4-wire Kelvin Low Resistance Measurement Lead Set (10A Max). 4ft leads. | $183.00 | |
| TL-IEC2 | IEC 320 C13 Power Socket Hipot & Ground Bond Test Lead Set. This test lead set makes a convenient connection to the IEC-320 C13 style power inlet of many products. The HV lead is connected to both the line and neutral pins, while the earth pin is connected to source- & sense- terminals. | $176.00 | |
 | TL-IEC1 | IEC 320 C13 Power Socket Hipot Lead Set. This test lead set makes a convenient connection to the IEC-320 C13 style power inlet of many products. The HV lead is connected to both the line and neutral pins, while the earth pin is connected to return terminal. 4ft leads. | $116.00 | |
| RPOO-7 | Rear Panel Output Only Terminals. This option provides rear panel mounted output terminals. The front terminals are removed and plugged. The V7X is not available with both front and rear terminals. Not available with Model V75. | $225.00 | |
 | DIO-X2 | Digital I/O Splitter. For applications requiring more than one device to access the DIO port, such as using a HV warning light and a remote start switch – the DIO-X2 allows 2 devices to plug into the V7X DIO port. | $43.00 | |
 | RM-7 | 7” x 19” Rack Mount Kit. The RM-7 is a 4U (7”) high by 19” wide rack mount kit which allows the instrument to protrude through the rack panel while secured to the rack mount tray. Panel mount handles are included. | $297.00 | |
| V7X-230V | Factory Set 230V Line Operation. Order this no charge option when powering the unit from 210-250VAC. | $0.00 | |
 | TL-TP1 | HV Retractable Tip Test Pistol Test Lead Set. For the ultimate operator safety, the HV test probe is only exposed when pistol grip is held and trigger is engaged. 4 ft test HV lead length. | $418.00 | |
 | RSF-7 | Remote Start Footswitch. Connects to the V7X DIO Port. For hands free operator convenience, remote start footswitch may be located up to 6 ft from the tester. | $297.00 | |
 | RSS-7 | Remote Start Switch. Connects to V7X DIO Port. For operator convenience, remote start switch may be located up to 6 ft from the tester. | $176.00 | |
 | HVW-7 | High Voltage Warning Light. Bright LED warning light connects to V7X DIO port and illuminates when units is actively testing. Power supply and 6 ft connection lead supplied. | $237.00 | |
 | K-2R | Additional Ground Bond Lead Set. 4-Wire, 2 alligator clip test leads set, 4 ft length for connection to Ground Bond terminals. 10AWG high flex source wires & 18 AWG sense with 40A rated clips. | $224.00 | |
 | TL-209 | Additional HV/Continuity Test Lead set. 3 piece, 4 ft length alligator test lead set for connection to HV output, return & continuity terminals. | $103.00 | |
 | TL-115-2 | NEMA 5-5 Power Socket Hipot & Ground Bond Test Adaptor Lead Set. Receptacle accepts NEMA 5-15 style North American power cords – for easy hipot & GB test connection on corded products. 4ft leads. | $237.00 | |
 | TL-115-1 | NEMA 5-15 Power Socket Hipot Test Adaptor Lead Set. Receptacle accepts NEMA 5-15 style North American power cords – for easy hipot test connection on corded products. 4ft leads. | $176.00 | |
 | TL-UP2 | Universal Power Receptacle Hipot & GB Test Adaptor. Receptacle accepts popular North American, European & Asian style power cords – for easy Hipot & Ground Bond test connection of corded products. 4ft leads. | $237.00 | |
 | TL-UP1 | Universal Power Receptacle Hipot Test Adaptor. Receptacle accepts popular North American, European & Asian style power cords – for easy hipot test connection of corded products. 4ft leads. | $176.00 | |
| APVD-7X | Daily Performance Verification Device. Many product safety agencies require that an electrical safety tester undergo daily verification of performance. The APVD-7X has built-in test loads for all V7X hipot units. Just hook it up and run the automatic verification sequence. It’s that simple. | $237.00 | |
 | HC-7X | Hard Carrying Case. The HC-7X is a tough, durable hard shipping/carrying case with internal die cut foam inserts with room for the instrument and accessories. External dimensions are 20” W x 17” D x 9” H. | $418.00 | |
 | USB-2 | USB A to RS232 (Serial) Adapter Cable (Requires RS-2) | $95.00 | |
Rentals
The V7X Hipot Tester is available for rent. Please contact the factory for a rental quotation on the items and period of time you desire. Vitrek offers a generous rental allowance for rentals that are converted to a purchase and rentals of 12 months come with a 10% buyout.