P3126 [ETAL]
LINE MATCHING TRANSFORMER; 线路匹配变压器
| 型号： | P3126 |
| 厂家： | 
ETAL Group |
| 描述： | LINE MATCHING TRANSFORMER |
| 文件： | 总4页 (文件大小：140K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRODUCT DATA SHEET
LINE MATCHING TRANSFORMER
P3126
Features
Applications
∗ 14.6mm seated height
∗ Vacuum encapsulated
∗ Compliant with EN 50020 and EN 60950
∗ Potentially explosive atmospheres
∗ Telecommunications
∗ Telemetry
∗ Line matching
∗ Instrumentation
DESCRIPTION
P3126 is
a
line matching transformer for
applications where high performance and safety
isolation to the most exacting international
standards are required in a compact case size.
In conjunction with external protection (e.g. fuses,
zener diodes, etc.) the device is compliant with
EN 50020 for peak rated voltage ≤375V.
Signal performance is equivalent to ETAL® P1200.
to Electronic Techniques
(Anglia) Limited
ETALDOC 501/4
Page 1 of 4
January 2001
P3126
SPECIFICATIONS
Electrical
At T = 25ºC and as reference circuit Fig. 2 unless otherwise stated.
Parameter
Conditions
Min
Typ
-
Max
1.5
Units
dB
Insertion loss
f = 2kHz, RL = 560Ω
-
Frequency response
LF-3dB cutoff
HF-3dB cutoff
200Hz – 4kHz
-
10
-
-
-
-
50
-
±0.2
Hz
kHz
dB
Return loss
Distortion (1)
200Hz – 4kHz
18
-
-72
-
-
-60
-
dB
dBm
dB
0dBm in line, 3rd
Harmonic f = 450Hz
-
Balance
DC - 5kHz
Method TG25
80
Saturation
Excitation 50Hz
250Vrms
Output voltage
across line
-
-
-
-
10
65
Vrms
Vpeak
Voltage
50Hz
DC
3.88
5.5
-
-
-
-
kVrms
kV
Isolation (2)
Operating range:
Functional
Storage
Ambient temperature
-10
-40
-
-
-
-
+70
+125
95
ºC
ºC
%R.H.
Humidity
Lumped equivalent circuit parameters as Fig. 1
(3)
DC resistance, RDC
Sum of windings
120
-
-
148
-
Ω
Leakage inductance ΔL
17
mH
Shunt
-43dBm 200Hz
-43dBm 1kHz
2.8
-
4
2
7
-
H
H
inductance Lp (4)
Shunt loss Rp (4)
-43dBm 200Hz
-43dBm 1kHz
5
7
-
-
-
-
kΩ
kΩ
Notes:
Equivalent Circuit
Fi g 1
1. Third harmonic typically exceeds other
harmonics by 20dB.
2. Components are 100% tested at 6.5 kVDC.
3. Caution: do not pass DC through windings.
Telephone line current, etc must be diverted
using choke or semiconductor line hold circuit.
4. At signal levels greater than –20dBm LP will
increase and RP will decrease slightly but the
effect is usually favourable to the return loss
characteristic.
ETALDOC 501/4
Page 2 of 4
January 2001
P3126
CONSTRUCTION
Dimensions shown are in millimetres (inches).
Geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mmØ.
Windings may be used interchangeably as primary or secondary.
EN 50020 para 7.1.2 Type 1(a) (side-by-side on
separate slots of single piece moulding).
(c)
(d)
Distance between highest
point of each winding
(including lead-outs) and
top of dividing fillet.
Distance between highest
point of each winding
(including lead-outs) to
conductive core through
encapsulant.
Distance through potting
box to conductive core.
Creepage/clearance (in
air).
Fully vacuum encapsulated with hard epoxy resin
totally enclosing all internal parts.
≥1.0mm
Critical Distances
(a)
(b)
Distance through bobbin
dividing fillet.
Distance through bobbin
walls to conductive core
(Each winding).
≥1.0mm
≥0.7mm
≥11.0mm
≥1.0mm
≥0.5mm
(e)
(f)
ETALDOC 501/4
Page 3 of 4
January 2001
P3126
ABSOLUTE MAXIMUM RATINGS
COPYRIGHT
(Ratings of components independent of circuit).
ETAL and P3126 are Trade Marks of Profec
Technologies Ltd.
The Trade Mark ETAL is registered at the UK
Trade Marks Registry.
Short term isolation voltage (15s)
4.6kVrms,
6.5 kVDC
100μA
-40ºC to
+125ºC
260ºC
DC current
Storage temperature
Profec Technologies Ltd. is the owner of the
design right under the Copyright Designs and
Patents Act 1988 and no rights or licences are
hereby granted or implied to any third party.
Lead temperature, 10s
© 2000 Profec Technologies Ltd.
Reproduction prohibited
ISO 9001
FM 25326
ETAL Group Oy, Kuormatie 14, FIN-03101, Nummela
Telephone: +358 (0)20 7500 330 Fax: +358 (0)20 7500 333
Website: www.etalgroup.com Email: etalgroup@egruppen.com
ETALDOC 501/4
Page 4 of 4
January 2001
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