CONTROL MEASURING INSTRUMENTS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600360620-3
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 3
• Document Creation Date: December 22, 2016
• Document Release Date: July 22, 2011
• Sequence Number: 620
• Publication Date: December 4, 1950
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/07/22 :CIA-RDP80-00809A000600360620-3
!NFORMATION FROM
FOREIGN DOCUMENTS OR RADIO BROADCASTS CD NO.
CENTRAL INTELLIGENCE AGENCY REPOR~
G Y'
CLASSIFICA"rION CoNFioErrDiAL COI~FIDEI~~I~t
COUNTRY USSR
SUBJECT Scientific - Electricity, instruments
HOW
PUBLISHED Monthly periodical
WHERE
PUBLISHED Moscow
DATE
PUBLISHED Sep 1950
LANGUAGE Russian
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SOURCE Elektrichestv~, No 9, 1950.
DATE OF
INFORMATION 1950
DATE DIST. ~ Dec 1950
N0. OF PAGES 3
SUPPLEMENT 'i'O
REPORT NO.
THIS IS UNEVALUATED INFORMATION
CONTROL MEASURING INSTRUMENTS
,
, , , , s? , , , and 15,000 amp. Frame dia-
meter 185 mm, height 75 mm (frame) plus 52 mm (current-carrying leads),
? Weight 1.33 kg.
EMM -- Electromagnetic ammeters, small. The 'same as Type ENM
ammeters except that ammeters with maximum readings of 100, 150, and
..200 amp for direct connection are not made. Frame diameter 135 ~,
height 73 m~; (frame) plus 52 mm (current-carrying leads), Weight'o.8
kg?
ormera, 7.5, 10, 15, 20, .
30, 40, 50' 75, loo, 150, 200, 300, 400, 600, 750, 1,000, 1,500, 2,000, ~?`~_?
3,ooc, 4,000
5 000 6 000 7 Goo 10 000
? Compiled by"Engr R.~.? Gel'man
The following types of control measuring instruments, listed on sheet
57 of the Handbook .of Power Plant Engineering, are manufactured by the
Ministry of Machine and Instrument Euilding USSR:
ENM -- Electromagnetic ammeters, ordinary, With magnetic damping,
for 50 cycle ac circuits. Accuracy class 2,5 rpercen~. Maximum read-
3ngs: (a) for direct connection, 1, 2, 3, 5, 10, 20, 30, 50, 75, 100,
150 and 200 amp; (b) for use with current transf
MN -~ Magaetoelectric ammeters, ordinary, Far use in do circuits.
Accuracy class 1.5. Maximum readingsi (a) with internal shunt, 1, 2,
3, 5, 10, 20, 30, 50, 75, 76, and 100 amp; (b) with shunt connected
+.xacrosa calibrated leads, 150, 200, 300, 500, 750, 760, 1,000, 1,500,
::~ 2,00, 3,000? 4,000, and 5,000 amp, Instrument scales have zero read-
?r ing oa left or`;in center. Frame diameter 185 mm, height 75 mm (frame)
? plus 52 mm (current-carrying leads). Weight 1.6 kg.
MM -- Magnetaelectric ammeters, small. For use in do circuits.
Ac~nracy class 1.5. Maximum readings;.(a) with internal shunt, 0.05,
0,075, 0.076, 0.1, 0.15, 0.3i 0.5, 1, 2, 3,?.5, 10, 20, 30, and 0 am
5 p;
(b) with shunt connected across calibrated leads, 75, 76, 100, 150,
200, 300, and 500 amp, Instrument scales have zero reading on .left or
in center. Frame diameter 135 ~, height 73 mm (frame) plus 52 mm
(current-carrying leads). Weight 1.1 kg.
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r ~
~~?~!El~ENTlAt
2MU -- Dfagnetoelectric ammeters, very small. For use in do cir-
cuits. Accuracy class 1.5. Maximum readings; (a) with internal shunt,
0.05, 0.075, 0.076, 0.1, 0.15, 0.3, 0.5, 1, 2, 3, 5, and 10 amp; (b)
with shunt connected across calibrated leads, 20, 30, 50, 75, 76, 100,
150, 200, and 300 amp. Instrument scales have zero reading oa left or
in center. Frame diameter 110 mmr, height 66 mm (frame) plus 58 mm (cur-
rent-carrying leads). Weight 0.9 kg.
ENM -- Electromagnetic voltmeters, ordinary. With magnetic damping,
for use with 50 cycle ac circuits. Accuracy class 2.5. Maximum readings:
(s) for direct connection, 15, 30, 50, 150, 250, 460, and 600 v; (b) for
use with voltage transformers, 3,600, 7,500, 12,000, 18,000 and 42,000 v.
Dimensions and weight as for Type ENM ammeters (see above).
EMM -- Electromagnetic voltmeters, small. For use with 50 cycle
ac circuits. ?Accuracy class 2.5.. Maximum readings; (a) for direct con-
nection, 15, 30, 50, 150, and 250 v; (b) for use with voltage transform-
ers, 460, 600, 3,600, 7,.500, 12,0000, 18,000, and 42,000 v. Dimensions
and weight as for Type EMM ammeters (see above).
MN -- Magnetoelectric voltmeters, ordinary. For use with do cir-
cuits. Accuracy class 1.0, Maximum readings: (a) with supplementary
internal resistor, 3, 7.5, 7.6, 15, 30, 50, 75, 76, 150, 250, 300, 450,
460, and 600 v; (b) with Type VDS external resistor, 1,000, 1,500, and
3,000 v. Instrument scales have zero reading on left or in center. Re-
sistance of instrument 133 ohms volt. Dimensions and xeight as Por
Type iniv ammeters (see above).
MM -- Magnetoelectric voltmeters, small. For use with do circuits.
Accuracy class 1.0. Maximum readings: (a) with internal resistor, 3,
7.5, 7.6, 15, 30, 50, 75, 76, 150, 250, and 300 v; (b) with Type 7.SD1
external resitor, 450, 460, and 600 v; (c) with Type VDS external re-
sistor, 1,000 1,500, and 3,000 v. Instrument scales have zero reading
on left or in center. Resistance of instrument 133 ohms volt. Dimen-
sions rnd weight as for Type MM ammeters (see above).
2MU -- Magaetoelectric voltmeters, very small. For use with do
circuits. Accuracy class 1.0. Maximum readings:;(a) '(2)'with internal
resistor, 3, 7.5, 7.6, 15, 30, 50, 75, 76, and 150 v; (b) with Type
1SD1 external resistor, 250, 300, 450, and 600 v; (c) with Type VDS
external resistor, 1,000 sad 1,500 v. Instrument scales have zero
reading on left or in center. Resistance of instrument 133 ohms
volt. Dimeasions?and weight as for Type 2MU esmietere (see above).
VIT -- Induction wattmeters. For use with three-phase ac cir-
cuits with unbalanced phase loading. Accuracy class 2.5. Caa be
connected directly is 127, 220, and 380-v circuit.. or through volt-
age fransformera is 500, 3,000, 6,000, 10,000, 15,000, and 35,000-v
circuits. Current rating 5 amp. Frame diameter X25 mm, frame height
147 ~? Weight 5.2 kg. ?
VIN -- Induction wattmeters. For use with three-phase ac cir-
cuits with balanced phase loading, the generator windings being ccn-
nected by a star connection with the neutral point brought out. Ac-
curacy class 2.5. Can be connected directly in 220 and 380-v cir-
cuits and through voltage transformers in 3,000, 6,000, 15,000, and
35,000-v circuits. Current rating 5 amp. Dimensions and weight as
for Type,VlT wattmeters (see above).
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CONFIDENTIAL
VIO -- Induction wattmeters. For use with single-p}aese.ac circuits.
C'~sracteristics and dimensions as for Type VIT wattmeters (see above).
weight ~.3 kg.
FVT -- Ferrodynamic wattmeters. Will come into use in the second
half of 1950. Fixed, for three-phase ac circuits with unbalanced phase
loading. Acouracy class 2.5. Can be connected directly in 100, 220,
sad 380-v circuits and through voltage transformers in 380, 500, 3,000,
6,000, 10,000, 15,000, and 35,000-v circuits. Current rating 5 amp.
Frame diameter 185 mm, height 95 mm (frame) plus 52 mm (current-carrying
leads).
Sanitized Copy Approved for Release 2011/07/22 :CIA-RDP80-00809A000600360620-3