HVD datasheet(2/2 Pages) TTELEC

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High Voltage Divider Resistors

HVD Series

ApplicationNotes

Duetothehighvoltage,whichcanappearbetweentheterminationsandanyadjacentmetalpart,resistorsshouldbemountedatanadequatedistance

fromotherconductors.

Forsomeultra-highvoltageapplicationsitisrequiredtoimmersethecomponentsinoilorSF6gasorpottheminvoid-freesiliconecompoundtoreduce

coronaorsurfacetracking.Theprintedprotectionissuitablefortheseapplications.

ThedividerconsistsofhighvalueR

1andlowvalueR2.ThevoltagedivisionratioofthedividerisgivenbyRatio=R2:(R1+R2)

PerformanceData

Maximum

Typical

Loadatratedpower:1000hoursat70°C

ΔR%

<100M:0.25,≥100M:0.5

0.1

Overload:1.5xratedpowernotexceedingLEVfor5seconds

ΔR%

0.25

0.1

Moistureresistance:MILStd.202,method106

ΔR%

0.25

0.1

Temperaturerapidchange:5cycles-55/155°C

ΔR%

0.25

0.1

Type

TypicalVCR(ppm/V)

HVD08

-0.50

HVD12

-0.35

HVD15

-0.25

HVD20

-0.20

HVD30

-0.15

OrderingProcedure

Example:HVD15foravoltageratioof1:1000,withR1=99.9megohmsandR2=100kilohms(totalR

1+R2=100megohms)at50ppm/°Cabsoluteand

25ppm/°CtrackingTCR,1%absoluteand0.5%ratiotolerance.

General Note

TT electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT electronics’ own data and is considered accurate at time of going to print.

www.bitechnologies.com www.irctt.com www.welwyn-tt.com

8.13

Performance Data

Maximum

Typical

Load at rated power: 1000 hours at 70°C

∆

0.25 <100M: 0.5 >100M

0.1

Overload: 1.5 x rated power not exceeding LEV for 5 seconds

∆

0.25

0.1

Moisture resistance: MIL Std. 202, method 106

∆

0.25

0.1

Temperature rapid change: 5cycles -55 / 155°C

∆

0.25

0.1

Type

Typical VCR (ppm/V)

HVD08

-0.50

HVD12

-0.35

HVD15

-0.25

HVD20

-0.20

HVD30

-0.15

Application Notes

Due to the high voltage, which can appear between the terminations and any adjacent metal part, resistors should be mounted at an

adequate distance from other conductors.

For some ultra-high voltage applications it is required to immerse the components in oil or SF6 gas or pot them in void-free silicone

compound to reduce corona or surface tracking. The printed protection is suitable for these applications.

The divider consists of high value R1 and low value R2. The voltage division ratio of the divider is given by Ratio = R2 / (R1 + R2).

Ordering Procedure

Example: HVD15 for a voltage ratio of 1:1000, with R1 = 99.9 megohms and R2 = 100 kilohms (total R1 + R2 = 100 megohms) at

50ppm/°C absolute and 25ppm/°C tracking TCR, 1% absolute and 0.5% ratio tolerance.

5 C D

0 M

K F D

Type

Size TCR (Absolute and Tracking) Value (R1 + R2)

Value (R2)

Tolerance (Absolute and Ratio)

H = HVD

100ppm absolute and

50ppm tracking

K = kilohms, M = megohms, G = gigohms JF

5% absolute and 1% ratio

100ppm absolute and

25ppm tracking

1% absolute and 0.5% ratio

50ppm absolute and

25ppm tracking

1% absolute and 0.25% ratio

Schematic Diagram

High Voltage Divider Resistors

HVD Series

SchematicDiagram

Make Possible

01.16

General Note

TT Electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

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