ETALDOC 129/9

Page 1 of 4

January 2001

PRODUCT DATA SHEET

PICK-OFF TRANSFORMER

P2152

Features

Applications

∗

  12.6mm (0.5") seated height

∗

  Telecommunications

∗

  Vacuum encapsulated

∗

  Pick-off applications

∗

  IEC 950, UL 1950 and EN 60950 certified

∗

  Calling Line Identification

∗

  UL Recognized Component

∗

  Instrumentation

∗

  BABT Certificate of Recognition

∗

  Voice Recording

∗

  CSA NRTL/C Certificate of Compliance

 

 

DESCRIPTION

P2152 is a high impedance transformer for
applications where high performance and safety
isolation are required in a compact case size.

P2152 has a  turns ratio of 1.732:1 giving an
impedance transformation of 3:1.

P2152 is designed for “listening” applications when
placed across a line, presenting a very high
impedance (>50kÙ) to minimize circuit loading.

P2152 is certified to IEC 950, EN 60950, UL1950
and EN 41003. P2152 is a UL Recognized
Component and is supported by a BABT
Certificate of Recognition, a CSA Certificate of
Compliance and an IEC CB Test Certificate.

 

E203175

to Electronic Techniques

(Anglia) Limited

P2152

ETALDOC 129/9

Page 2 of 4

January 2001

SPECIFICATIONS

Electrical

At T = 25ºC unless otherwise stated.

Parameter

Conditions

Min

Typ

Max

Units

Voltage
isolation 

(1)

50Hz
DC

3.88

5.5

-
-

-
-

kVrms

kV

Balance

DC – 5kHz
Method TG25

50

-

-

dB

Input impedance

200Hz – 4kHz, Fig 2

50

-

-

k

Ω

Operating range:
Functional
Storage
Humidity

Ambient temperature

-10
-40

-

-
-
-

+70

+125

95

ºC
ºC

%R.H.

Lumped equivalent circuit parameters as Fig. 1

DC resistance, R

DC

 

(2)

Sum of windings
(Corrected for ratio)

2300

-

2800

Ω

Leakage inductance 

∆

L

Refered to pins 1-3

310

-

350

mH

Shunt inductance Lp

-43dBm  200Hz

60

-

112

H

Shunt loss Rp

-43dBm  200Hz

85

-

120

k

Ω

Self Capacitance

C

1

C

2

7

13

-
-

10
18

pF
pF

 

Notes

1.  Components are 100% tested at 6.5kV DC.
2.  Caution:  do not pass DC through windings.

Telephone line current, etc. must be diverted
using choke or semiconductor  line hold
circuit.

P2152

ETALDOC 129/9

Page 3 of 4

January 2001

CONSTRUCTION

Dimensions shown are in millimetres (inches).
Geometric centres of outline and pin grid coincide within a tolerance circle of 0.6mm

Recommended Circuit

F i g   2

Through "loss" (including voltage ratio) 7.3dB = 0dB reference

Response:  0.4dB   200Hz - 4kHz

Impedance:  Z

in  minimum at 200Hz >50k

±

Ω

Equivalent Circuit

LINE

F i g   1

P2152

ETALDOC 129/9

Page 4 of 4

January 2001

SAFETY

CERTIFICATION

Constructed in accordance with IEC 950:1991,
EN60950:1992 (BS7002:1992) to amendment 5,
supplementary insulation, and UL 1950 3rd Edition,
reinforced insulation, 250Vrms  maximum working
voltage, flammability class V-0.
Distances through solid insulation 0.4mm
minimum.

Certified under the IEC CB scheme (Certificate
GB442W) to IEC 950:1991, up to amendment 4, sub-
clauses 1.5, 1.5.1, 1.5.3, 2.2, 2.2.2, 2.2.3, 2.2.4, 2.9.2,
2.9.3, 2.9.4, 2.9.6, 2.9.7, 4.4, 4.4.3.2 (class V-0) and 5.3
for a maximum working voltage of 250Vrms, nominal
mains supply voltage not exceeding 300Vrms and a
maximum operating  temperature  of  70ºC  in  Pollution
Degree 2 environments, supplementary insulation.
Recognized under the Component Recognition
Program of Underwriters Laboratories Inc. to US and
Canadian requirements CAN/CSA C22.2
No. 950-95/UL1950, Third Edition, including revisions
through to revision date March 1, 1998, based on
Fourth Amendment of IEC 950, Second Edition,
maximum working voltage 250Vrms, Pollution Degree
2, reinforced insulation.

UL File number E203175.
CSA Certificate of Compliance 1107696 (Master
Contract 1188107).
Approved and certified by BABT to EN 60950 and
EN 41003.
BABT Certificate of Recognition CR/0136.

Additionally, Profec Technologies certifies all
transformers as providing voltage isolation of
3.88kVrms, 5.5kV DC minimum.   All shipments are
supported by a certificate of conformity to current
applicable safety standards.

ABSOLUTE MAXIMUM RATINGS

COPYRIGHT

(Ratings of components independent of circuit).

Short term isolation voltage (15s)

DC current

Storage temperature

Lead temperature, 10s

4.6kVrms,
6.5kV DC

100

µ

A

-40ºC to
+125ºC

260ºC

ETAL and P2152 are  Trade Marks of Profec
Technologies Ltd.
The  Trade Mark ETAL is registered at the UK
Trade Marks Registry.

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.

© 1996, 2000 Profec Technologies Ltd.
Reproduction prohibited.

T R A N S F O R M I N G    T H E         F U T U R E

Profec Technologies Ltd., 10 Betts Avenue, Martlesham Heath, Ipswich, IP5 3RH, England

                           Telephone: +44 (0) 1473 611422

Fax:  +44 (0) 1473 611919

Websites: www.etal.ltd.uk

www.profec.com

Email:

info@etal.ltd.uk

sales@profec.com

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