PHVD Datasheet, PDF (2/2 Pages) TT Electronics. – rohs compliant

Precision High Voltage
D_Piv_rid_ee_cr_isRe_iosi_nsto_Hrs_{igh Voltage Divider Resistors}
PHVD Series
P HVD S eries
Make Possible
Performance Data
Load at rated power: 100 0 hours at 25°C
O verload: 1.5 x rated power not exceeding LE V for 5 s econds
Mois ture res is tance: MIL S td. 202, method 106
T hermal s hock: MIL S td. 202, method 107, condition C
∆R %
∆R%
∆R%
∆R %
Maximum
0. 25
0. 25
0. 25
0.2
Typical
0.1
0.1
0.1
0.1
Type
PHVD10
PHVD15
PHVD20
PHVD30
PHVD40
Typical VCR (ppm/V)
<500 M: -0.35
<1G 0: -0.2
<1G 0: -0.1
<1.5G : -0.07
<2G 0: -0.05
500 M to 7G 0: -0.9
1G 0 to 10G : -0.4
1G 0 to 20G : -0.3
1 .5G to 30G : -0.2
2 G 0 to 40G : -0.15
Derating Curve
120
100
80
60
40
20
0
0
25
50
75
100
125
150
175
200
Ambient Temperature (°C)
Application Notes
Due to the high voltage, which can appear between the terminations and any adjacent metal part, res istors s hould be mounted at
an adequate distance from other conductors.
F or s ome ultra-high voltage applications it is required to immers e the components in oil or SF 6 gas or pot them in void-free s ilicone
compound to reduce corona or s urface tracking. T he printed protection is s uitable for thes e applications.
T he divider consis ts of high value R 1 and low value R 2. The voltage division ratio of the divider is given by R atio = R 2 / (R 1 + R 2).
Ordering Procedure
E xample: P HVD15 for a voltage ratio of 1:1000, with R 1 = 99.9 megohms and R 2 = 100 kilohms (total R 1 + R 2 = 100 megohms)
at 25ppm/°C tracking TCR and 0.5% ratio tolerance
PHVD 15 D – 100M/100KD
T ype
S ize
T CR T racking
C 50ppm/°C
D 25ppm/°C
T otal Value R 1 + R 2 (us e I E C 62 code)
Low Value R 2 (us e I E C 62 code)
T olerance R atio
C 0.25% F 1%
B 0.1% D 0.5%
P acking
B ulk P ack
no code required
General Note
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to W elwyn’s own
make changes
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in product s pecification without
cons idered acc urate at time of
notic e
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liability.
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07.14
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