i s o 9 0 0 1

emic
c«ng t¬ ®iÖn 3 pha lo¹i Mv
three phase electric meters type Mv

c«ng ty tnhh nhµ n­íc mét thµnh viªn thiÕt bÞ ®o ®iÖn

electric measuring instrument company Limited (emic Co., Ltd.)
10 TrÇn Nguyªn H·n - Hµ Néi - ViÖt Nam
10 Tran Nguyen Han Str.- HA NOI - viet Nam
Tel : 84.4.8257979/8257991/9350544 Fax : 84.4.8260735/8264603/8257725
E-mail : cothbidodi@hn.vnn.vn website: http://www.etc.com.vn/emic
 giíi thiÖu chung GENERAL
C«ng t¬ ®iÖn 3 pha lo¹i MV lµ s¶n phÈm hîp t¸c kü thuËt Three phase electric meters type MV are products of technical
cña C«ng ty ThiÕt bÞ ®o ®iÖn (EMIC) vµ H·ng LANDIS & GYR - cooperation between Electric Measuring Instrument
Thôy Sü theo tiªu chuÈn quèc tÕ IEC60521, ®­îc s¶n xuÊt Company (EMIC) and LANDIS & GYR - Switzerland, complying
trªn d©y chuyÒn c«ng nghÖ vµ thiÕt bÞ hiÖn ®¹i, ®¶m b¶o with the international standard IEC60521. They are
chÊt l­îng theo ISO9001. manufactured by modern technology line and equipments,
ensured quality according to ISO9001.

®Æc tr­ng FEATURES

C«ng t¬ ®iÖn 3 pha lo¹i MV cã ®Æc tÝnh vµ ®é tin cËy cao, Three phase electric meters type MV have high performance
dïng ®Ó ®o n¨ng l­îng h÷u c«ng (kWh) hoÆc n¨ng l­îng and high reliability. They are built for measurement active
v« c«ng (kVARh) ë l­íi ®iÖn xoay chiÒu 3 pha 3 d©y hoÆc 3 energy (kWh) or reactive energy (kVARh) in alternating current
pha 4 d©y. C«ng t¬ MV gåm cã lo¹i C«ng t¬ 3 pha 2 phÇn tö three-phase three-wire or three-phase four-wire networks. They
vµ lo¹i C«ng t¬ 3 pha 3 phÇn tö. consist of two-element and three-element meters.
C«ng t¬ MV ®­îc chÕ t¹o ®¹t cÊp chÝnh x¸c 1 hoÆc 2 theo They comply with class 1 or class 2 specifications of the
tiªu chuÈn quèc tÕ IEC60521 vµ cã nh÷ng ®Æc tr­ng sau : international standard IEC60521. They are characterized by
the following features :
HiÖu chØnh dÔ. Simple adjustment.
M« men quay lín. High torque.
Ma s¸t nhá. Low friction.
§é nh¹y cao. Low starting current.
Tæn hao thÊp. Low power consumption.
¶nh h­ëng nhiÖt ®é thÊp. Low temperature coefficient.
§é æn ®Þnh cao. High stability.
ChÞu qu¸ t¶i lín. High resistance to short circuits.
ChÞu ®iÖn ¸p cao. High resistance to surge voltage.
C¸ch ®iÖn cao. High dielectric strength.
Gèi ®ì d­íi 2 ch©n kÝnh hoÆc gèi tõ. Double jewel or magnetic lower bearing.
Chèng ¨n c¾p ®iÖn : C¬ cÊu chèng quay ng­îc hoÆc Bé Prevent electric steal : Non-reverse running device or uni-
sè 1 h­íng. directional register.
1 gi¸ hoÆc nhiÒu gi¸ (2 gi¸, 3 gi¸). Single tariff or multi-tariff (two-tariff, three-tariff).

TÝnh n¨ng kü thuËt SPECIFICATIONS

C«ng t¬ ®iÖn 3 pha h÷u c«ng (kWh) 3 phÇn tö (3 pha 4 d©y) Active three phase meters (kWh) 3 elements (3-phase 4-wire)
hoÆc 2 phÇn tö (3 pha 3 d©y) or 2 elements (3-phase 3-wire)
C«ng t¬ ®iÖn 3 pha v« c«ng (kVARh) Reactive three phase meters (kVARh)
C«ng t¬ ®iÖn 3 pha ®a chøc n¨ng Single tariff or multi-function three phase electric meters
Tiªu chuÈn : IEC60521 Standard : IEC60521
§iÖn ¸p danh ®Þnh : 3 pha 4 d©y: 57,8/100V, 63,5/110V, 69/120V, 120/208V, Rated voltage : 3-phase 4-wire 57.8/100V, 63.5/110V, 69/120V, 120/208V,
127/220V, 133/230V, 220/380V, 230/400V, 240/415V 127/220V, 133/230V, 220/380V, 230/400V, 240/415V
3 pha 3 d©y:100V, 110V, 120V, 208V, 210V, 220V, 230V, 240V, 3-phase 3-wire 100V, 110V, 120V, 208V, 210V, 220V, 230V,
380V, 400V, 415V 240V, 380V, 400V, 415V
TÇn sè danh ®Þnh : 50Hz hoÆc 60Hz Rated frequency : 50Hz or 60Hz
Dßng ®iÖn : 1A, 2,5A, 2,5(10)A, 5A, 5(7,5)A, 5(10)A, 5(20)A, 10(20)A, Current : 1A, 2.5A, 2.5(10)A, 5A, 5(7.5)A, 5(10)A, 5(20)A, 10(20)A,
10(30)A, 10(40)A, 15(60)A, 20(40)A, 20(60)A, 20(80)A, 25(50)A, 10(30)A, 10(40)A, 15(60)A, 20(40)A, 20(60)A, 20(80)A, 25(50)A,
30(60)A, 30(90)A, 40(80)A, 40(120)A, 50(100)A, 50(120)A 30(60)A, 30(90)A, 40(80)A, 40(120)A, 50(100)A, 50(120)A
CÊp chÝnh x¸c : 1 hoÆc 2 Class : 1 or 2

CÊu t¹o CONSTRUCTION

Vá Case
§Õ vµ æ ®Êu d©y C«ng t¬ b»ng nhùa BakªlÝt ®en. The case with its integral terminal block is moulded in a black
C¸c §Çu cèt ®ång cña æ ®Êu d©y ®­îc b¾t vÝt hoÆc hµn phenolic resin.
víi Cuén d©y dßng. CÇu nèi m¹ch ¸p tr­ît trong æ ®Êu d©y Brass terminals are screwed or welded into the current coil. For
(®­îc bè bªn trong hoÆc bªn ngoµi N¾p C«ng t¬) ®Ó nèi calibration or testing purposes, the voltage link is provided
internally or externally of the meter cover and slided laterally
hoÆc kh«ng nèi m¹ch, dÔ dµng cho viÖc hiÖu chØnh vµ kiÓm
along the terminal block for connecting or disconnecting the
tra C«ng t¬. voltage circuit.
N¾p C«ng t¬ b»ng nhùa PC (Polycacbonat) chèng ch¸y The meter cover is made of PC (flame retardant) transparent
hoÆc nhùa BakªlÝt ®en cã cöa sæ kÝnh. Cöa sæ trong suèt cho plastic or black phenolic resin with the glass window fit on it .
phÐp nh×n thÊy Bé sè, MÆt sè vµ §Üa r«to. The window allows full view of the register, nameplate and
N¾p che æ ®Êu d©y dµi hoÆc ng¾n b»ng nhùa PC chèng rotor disk.
ch¸y mµu ®en. S¬ ®å ®Êu d©y C«ng t¬ ë phÝa trong N¾p The extended or short terminal cover is made of black PC
che æ ®Êu d©y. (Flame retardant) plastic with the connection diagram
marked inside it.
2 EMIC MV/09/2005
 KÕt cÊu chÝnh / MAIN CONSTRUCTION

5 6

1. æ ®Êu d©y
2. §Õ
3. Nam ch©m h·m 4
4. Khung
5. Gèi ®ì trªn
7
A1 A3
6. Bé sè
7. R«to 3
8. PhÇn tö dßng ®iÖn
9. C¬ cÊu chèng quay ng­îc
10. Gèi ®ì d­íi 8
A2
11. PhÇn tö ®iÖn ¸p
A4
12. MÆt sè
13. N¾p 9
14. N¾p che æ ®Êu d©y 10
2
11
A1. HiÖu chØnh t¶i ®Çy (100%)
A2. HiÖu chØnh t¶i thÊp (5% and 10%)
A3. HiÖu chØnh t¶i c¶m øng (cos )
A4. HiÖu chØnh c©n b»ng m«men 1

1.Terminal block
2.Base
3.Brake magnet
12
4.Frame
5.Upper bearing
6.Register
7. Rotor
8.Current element
9.Non-reverse running device
10.Lower bearing
11.Voltage element
12.Name plate
13.Cover
13
14.Terminal cover

A1.Full load adjustment (100%)

A2.Low load adjustment (5% and 10%)
A3.Inductive load adjustment (cos )
A4. Torque balance adjustment

14

3 EMIC MV/09/2005
Khung Frame
Khung C«ng t¬ b»ng hîp kim nh«m. Trªn Khung g¸ l¾p The meter frame is made of aluminium alloy. On this frame are
c¸c phÇn tö ph¸t ®éng cïng víi Nam ch©m h·m, hÖ mounted the driving elements together with the brake magnet
thèng Gèi ®ì, Bé sè th­êng vµ C¬ cÊu chèng quay assembly, bearing system, normal register and non-reverse
ng­îc hoÆc Bé sè 1 h­íng. running device or uni-directional register.
PhÇn tö ph¸t ®éng Driving element
PhÇn tö ph¸t ®éng gåm lo¹i 2 phÇn tö vµ lo¹i 3 phÇn tö The driving element consists of two elements or three elements,
(theo lo¹i C«ng t¬) which correspond to meter types.
Mçi phÇn tö ph¸t ®éng gåm cã 1 phÇn tö dßng ®iÖn vµ 1 Each driving element consists of a current element and a
phÇn tö ®iÖn ¸p. Mçi phÇn tö cã 1 Lâi tõ vµ 1 Cuén d©y voltage element, each with a magnetic core and a coil, are
l¾p trªn 1 Gi¸ ®ì b»ng thÐp dÉn tõ. fixed on a steel frame.
C¸c Lâi tõ dßng vµ ¸p b»ng t«n silic cã ®Æc tÝnh tõ tèt, The electro-magnetic cores are made of laminated silicon steel
®­îc xö lý chèng gØ. Lâi dßng cã bï qu¸ t¶i b»ng mét of superior magnetic characteristics and given rust-free
hîp kim ®Æc biÖt, cã kh¶ n¨ng qu¸ t¶i lín. treatment. The current core is provided with overload
C¸c Cuén d©y dßng vµ ¸p c¸ch ®iÖn cao vµ chèng Èm compensation.
tèt. The coils are throughly insulated to achieve high dielectric
strength and excellent protection against humidity.
Mçi phÇn tö ph¸t ®éng ®Òu cã C¬ cÊu hiÖu chØnh c©n
b»ng m«men, C¬ cÊu hiÖu chØnh t¶i thÊp vµ C¬ cÊu The electro-magnet has a torque balance adjuster, a low load
hiÖu chØnh t¶i c¶m øng cã hiÖu qu¶ tuyÕn tÝnh. adjuster and an inductive load adjuster. These are all linear in
effect and readily accessible.
R«to Rotor
Trôc r«to b»ng thÐp kh«ng gØ. 2 ®Üa r«to ®­îc g¾n víi The rotor spindle is made of stainless steel. Attached to this by
Trôc r«to nhê ph­¬ng ph¸p Ðp phun nhùa ®Æc biÖt. means of a special resin moulding process are two rotor disks,
which is made of pure aluminium sheet. The rated driving torque
§Üa r«to b»ng nh«m cã ®é tinh khiÕt cao ®¶m b¶o
is large enough to cover the wide load range. The edge of the
m«men quay ®ñ cho d¶i t¶i réng. C¹nh bªn §Üa r«to cã
rotor disk is marked with black mark at zero position for
dÊu ®en t¹i vÞ trÝ 0 ®Ó hiÖu chØnh vµ kiÓm tra C«ng t¬.
adjustment and testing.
Trôc vÝt b»ng nhùa POM (Polyacetal) l¾p trªn Trôc r«to The worm, which drives the register, is made of POM
®Ó dÉn ®éng Bé sè. (polyacetal) resin and fixed onto the rotor spindle.
R«to tr¸nh ®­îc nh÷ng h­ h¹i do vËn chuyÓn theo The meter rotor is protected from damage due to transportation
h­íng däc trôc vµ h­íng kÝnh b»ng c¸c c÷ dõng c¬ khÝ. shocks in axial and radial directions by means of mechanical
stops.
Gèi ®ì trªn Upper bearing
Gèi ®ì trªn (kh«ng b«i tr¬n): 1 b¹c nhùa POM liÒn Trôc The upper bearing consists of a stainless steel guide pin secured
vÝt (l¾p trªn Trôc r«to) quay trong 1 Trôc thÐp kh«ng gØ cã in a moulded cap, fixed to the frame and running in a POM
vá nhùa POM b¶o vÖ (l¾p trªn Khung C«ng t¬). bearing bush (without lubrication) is integrated with the worm,
that attached to the rotor spindle.
Gèi ®ì d­íi Lower bearing
C«ng t¬ cã thÓ ®­îc cÊp víi 1 trong 2 lo¹i Gèi ®ì d­íi The meter can be provided with either one of two following
sau : Lower bearing types at customer’s option :
Gèi ®ì d­íi lo¹i 2 ch©n kÝnh Jewel lower bearing
1 Viªn bi quay gi÷a 2 Ch©n kÝnh (1 Ch©n kÝnh l¾p cè ®Þnh A steel ball rotates between two synthetic jewels. One jewel is
trªn Khung C«ng t¬ vµ 1 Ch©n kÝnh quay cïng víi Trôc fixed to the meter frame while the other rotates with the rotor
r«to), do ®ã ma s¸t gi¶m ®¸ng kÓ vµ ®Æc tÝnh C«ng t¬ spindle. Thus, friction is drastically reduced, resulting in excellent
æn ®Þnh tèt ngay c¶ ë t¶i thÊp. long-term meter performance even under low-load conditions.
Gèi ®ì d­íi lo¹i gèi tõ Magnetic floating lower bearing
Gèi ®ì d­íi lo¹i gèi tõ : 2 Nam ch©m h×nh vµnh kh¨n n¹p Two homopolar-magnetized annular magnets, one attached to
tõ ®ång cùc (1 Nam ch©m l¾p cè ®Þnh trªn Khung C«ng the meter frame, the other to the rotor spindle, repel each other.
t¬ vµ 1 Nam ch©m l¾p víi Trôc r«to) ®Èy nhau. æ ®ì gåm The guide bearing consists of a stainless steel guide pin and a
1 Trôc thÐp kh«ng gØ vµ 1 b¹c nhùa POM (kh«ng b«i POM bearing bush (without lubrication). Therefore they carry
tr¬n). Do ®ã Gèi tõ mang ®­îc khèi l­îng R«to trªn mét the weight of the rotor on a “magnetic cushion”, practically
“®Öm tõ ”, gÇn nh­ kh«ng cã ma s¸t. Nguyªn lý lùc ®Èy tõ without friction. The principle of magnetic repulsion prevents the
cña Gèi tõ phßng ngõa ®­îc sù x©m nhËp cña c¸c penetration of ferro-magnetic particles into the air gap
phÇn tö s¾t tõ vµo khe hë gi÷a 2 nam ch©m, ®¶m b¶o æn between the two magnets and thus provides unimpeded meter
®Þnh ®Æc tÝnh C«ng t¬. Sù æn ®Þnh tõ cña Gèi tõ ®­îc performance. A special manufacturing process ensures high
®¶m b¶o bëi mét qu¸ tr×nh chÕ t¹o ®Æc biÖt. magnetic stability.

Nam ch©m h·m Brake magnet

Nam ch©m b»ng Alnico cã lùc kh¸ng tõ cao, cã vá b¶o The magnet is made of Alnico, has a high coercive force and
vÖ b»ng hîp kim nh«m ®óc. Mét hîp kim ®Æc biÖt ®­îc secured in a die-cast aluminium alloy housing. A thermal alloy is
g¾n víi cùc Nam ch©m ®Ó bï ¶nh h­ëng cña nhiÖt ®é. attached to the magnet poles to compensate the temperature
HiÖu chØnh tinh thùc hiÖn ®­îc nhê chuyÓn ®éng cña coefficient. Fine adjustment is obtained by rotating the fine
Sun tõ l¾p bªn trong Nam ch©m h·m do quay VÝt hiÖu adjustment screw, the magnetic shunt is moved internally along
chØnh. the brake magnet path.

4 EMIC MV/09/2005
C¬ cÊu chèng quay ng­îc Non-reverse running device
C¬ cÊu chèng quay ng­îc gåm 1 §Üa cam POM l¾p trªn The non-reverse running device consists of a POM cam disk
Trôc r«to, 1 C¸ h·m POM quay trªn 1 Trôc thÐp kh«ng gØ vµ fitted onto the rotor spindle, a POM pawl turned on the
Trô ®ì l¾p trªn Khung C«ng t¬. stainless steel pin and pillar assembly fixed to the meter
C¬ cÊu chèng quay ng­îc lµm dõng sù quay ng­îc cña frame.
R«to vµ sù ®Õm cña Bé sè khi C«ng t¬ bÞ quay ng­îc. The non-reverse running device is designed to stop the
reversing of the rotor and counting of the meter register
when meter was reverse running.
Bé sè Register
C«ng t¬ cã thÓ ®­îc cÊp víi 1 trong 2 lo¹i Bé sè sau : The meter can be provided with either one of two following
register at types at customer’s option :
Bé sè th­êng Normal register
C¸c Tang trèng sè, B¸nh g¶y, B¸nh r¨ng, B¹c ®ì, B¹c chÆn Assembled on the register frame, which is made of
b»ng nhùa POM vµ c¸c Trôc thÐp kh«ng gØ ®­îc l¾p trªn aluminium alloy sheet, are the digit-drums, pinions, gears,
Khung bé sè. Khung bé sè b»ng hîp kim nh«m tÊm. journal bearings and stop collar, which are made of POM
resin, and stainless steel spindles.
Bé sè 1 h­íng Uni-directional register
Bé sè 1 h­íng cã thÓ ®­îc cung cÊp theo yªu cÇu ®Ó thay An optional unidirectional register may be provided on
thÕ cho Bé sè th­êng vµ C¬ cÊu chèng quay ng­îc. Bé sè 1 request which is substituted for the normal register and non-
h­íng sÏ chØ quay theo 1 h­íng, ngay c¶ khi R«to cña reverse running device. The unidirectional register will turn
C«ng t¬ bÞ quay ng­îc. positively even when the rotor is running in reverse direction.
C¸c Tang trèng sè, B¸nh g¶y, B¸nh r¨ng, B¸nh cãc, C¸, B¹c Assembled on the aluminium alloy frame are the digit-
®ì, B¹c chÆn b»ng nhùa POM vµ c¸c Trôc thÐp kh«ng gØ drums, pinions, gears, ratchets, pawls, journal bearings, stop
®­îc l¾p trªn Khung bé sè b»ng hîp kim nh«m tÊm. collar, which are made of POM resin and stainless steel
spindles.
C¸c Bé sè cã 5 hoÆc 6 Tang trèng sè (trong ®ã cã hoÆc The registers have 5 or 6 digit-drums, including or excluding
kh«ng cã phÇn thËp ph©n). Ch÷ sè cña Tang trèng mµu the decimal, with digits printed white on black drum from 0
tr¾ng trªn nÒn ®en tõ 0 ®Õn 9. (Riªng ch÷ sè cña Tang trèng to 9. (Digits printed red on white drum from 0 to 9 for decimal
sè thËp ph©n mµu ®á trªn nÒn tr¾ng tõ 0 ®Õn 9). Ch÷ sè cao digit-drum). Digit size is 5mm in height, 3mm in width and
5mm, réng 3mm vµ nÐt 0,8mm. Bé sè (kh«ng b«i tr¬n) cã ma 0.8mm in thickness. The registers have extremely low friction
s¸t rÊt nhá. (without lubrication).

C¸c c¬ cÊu hiÖu chØnh ADJUSTMENT MECHANISMS

TÊt c¶ c¸c c¬ cÊu hiÖu chØnh cã thÓ hiÖu chØnh dÔ dµng All adjustments are accessible from the front and can be
b»ng tuèc n¬ vÝt tõ phÝa tr­íc. reached easily by hand with a screwdriver.
HiÖu chØnh t¶i ®Çy (100%) Full load adjustment (100%)
HiÖu chØnh th« b»ng c¸ch quay Nam ch©m h·m song song Coarse adjustment is obtained by moving the brake
víi §Üa r«to ®Ó thay ®æi tèc ®é danh ®Þnh cña C«ng t¬. magnet parallel to the rotor disk, thereby changing the
rated speed.
HiÖu chØnh tinh b»ng c¸ch quay VÝt hiÖu chØnh Sun tõ cña
Nam ch©m h·m. Fine adjustment is obtained by rotating the magnetic shunt
adjustment screw.
HiÖu chØnh t¶i thÊp (5% vµ 10%) Low load adjustment (5% and 10%)
C¬ cÊu hiÖu chØnh t¶i thÊp ë trªn phÇn tö ®iÖn ¸p. The low load adjustment mechanism is on the voltage
HiÖu chØnh t¶i thÊp b»ng c¸ch quay §ßn bÈy t¶i thÊp (hiÖu element.
chØnh th«) vµ quay VÝt hiÖu chØnh t¶i thÊp (hiÖu chØnh tinh). Adjustment is obtained by turning the low load lever (coarse
adjustment) and rotating the low load adjustment screw
HiÖu chØnh t¶i c¶m øng (cosj)
(fine adjustment).
C¬ cÊu hiÖu chØnh t¶i c¶m øng ë trªn phÇn tö dßng ®iÖn.
Inductive load adjustment (cosj)
Lâi dßng cã mét sè Vßng nh«m cã thÓ c¾t më ®Ó hiÖu chØnh
th« gãc lÖch pha. The inductive load adjustment mechanism is on the current
element.
HiÖu chØnh tinh b»ng c¸ch thay ®æi ®iÖn trë cña Vßng d©y
bï nhê sù tiÕp xóc tr­ît cña TÊm kÑp trªn Hép d©y bï gãc The current core has some aluminium loops, which can be
lÖch pha. cut open as a coarse adjustment for quadrature.
Fine adjustment is achieved by changing the resistance of a
HiÖu chØnh c©n b»ng m«men compensating wire-loop by means of a sliding contact in
C¬ cÊu hiÖu chØnh c©n b»ng m«men ë trªn phÇn tö ®iÖn the inductive load adjustment former.
¸p. Torque balance adjustment
HiÖu chØnh c©n b»ng m«men cña tõng pha b»ng c¸ch vÆn
The torque balance adjustment mechanism is on the
2 VÝt hiÖu chØnh ®Ó c©n b»ng m«men.
voltage element.
Torque balance adjustment is obtained by moving of two
adjustment screws, thereby diverting magnetic flux across
the voltage core leakage gap of each element.

5 EMIC MV/09/2005
 Ký hiÖu c«ng t¬ ®iÖn 3 pha lo¹i Mv NOMENCLATURE

Lo¹i MVn1n2n3n4n5-n6 Type MVn1n2n3n4n5-n6

M C«ng t¬ ®iÖn 3 pha M Three-phase electric meter
V ViÖt Nam V Vietnam
n1 Sè phÇn tö n1 Number of elements
n1 = 2E : 2 phÇn tö n1 = 2E : 2 elements
n1 = 3 E: 3 phÇn tö n1 =3E : 3 elements
n2 Sè d©y n2 Number of wires
n2 = 3 : 3 d©y n2 = 3 : 3 wires
n2 = 4 : 4 d©y n2 = 4 : 4 wires
n3 Chñng lo¹i C«ng t¬ 3 pha n3 Type of three-phase electric meter
n3 = R : C«ng t¬ 3 pha v« c«ng (kVARh) n3 = R : Reactive meter (kVARh)
Kh«ng cã n3 (Kh«ng cã ký hiÖu R) : C«ng t¬ 3 pha Without n3 (Without the designation R) : Active
h÷u c«ng (kWh) meter (kWh)
n4 Lo¹i Gèi ®ì d­íi n4 Lower bearing type
n4 = m : Gèi ®ì tõ n4 = m : Magnetic bearing
Kh«ng cã n4 (Kh«ng cã ký hiÖu m) : Gèi ®ì 2 ch©n Without n4 (Without the designation m) : Double-
kÝnh jewel bearing
n5 Lo¹i Bé sè n5 Register type
n5 = r : Bé sè 1 h­íng n5 = r : Uni-directional register
Kh«ng cã n5 (Kh«ng cã ký hiÖu r) : Bé sè th­êng vµ Without n5 (Without the designation r) : Normal
C¬ cÊu chèng quay ng­îc register and Non-reverse running Device
n6 Lo¹i biÓu gi¸ n6 Tariff type
n6 = 2T; 3T : C«ng t¬ 2 biÓu gi¸; 3 biÓu gi¸ n6 = 2T; 3T : 2-tariff; 3-tariff
Kh«ng cã n6 (Kh«ng cã ký hiÖu 2T; 3T) : C«ng t¬ 1 Without n6 (Without the designation 2T; 3T) :Single
biÓu gi¸ tariff

KÝch th­íc ngoµi / OUTER DIMENSIONS (mm)

180 180
90 90
6 127 6 127
70
70

276
187
187

243
243
336

EMIC® EMIC®
6x8
6x8

EMIC

170
60

EMIC
186

170
192

MV-3 MV-4

B¶n vÏ sè : MV-3 C«ng t¬ cã N¾p che æ ®Êu d©y dµi

Drawing No . : MV-3 for meter with extended terminal cover

B¶n vÏ sè : MV-4 C«ng t¬ cã N¾p che æ ®Êu d©y ng¾n

Drawing No . : MV-4 for meter with short terminal cover

6 EMIC MV/09/2005
 th«ng sè kü thuËt - technical data

Th«ng sè - Data M« t¶ - Description

Lo¹i MV3E4 MV2E3 MV3E4R MV3E4R
Type 3 x ... A 2 x 5A 3 x 5A 3 x 5A
§iÖn ¸p danh ®Þnh
Un V 3 x 220/380 3 x 120/208 3 x 100 3 x 100 3 x 380
Rated voltage
TÇn sè danh ®Þnh
fn Hz 50
Rated frequency
Dßng ®iÖn ®Þnh møc Ib A
Basic current 5 10 20 30 50 5 5 5 5
Dßng ®iÖn qu¸ t¶i Imax A
Maximum current 6 10 20 20 30 40 40 60 60 100 6 10 20 6 10 6 10 6 10
Dung l­îng t¶i % cña Ib §o l­êng 120 200 400 200 300 400 200 300 200 200 120 200 400 120 200 120 200 120 200
Load capacity in % of Ib Metering
NhiÖt
400
Thermal
Ng¾n m¹ch Gi¸ trÞ cña xung dßng tõ 25 Imax ®Õn 50 Imax trong 1ms
Short circuit Current impulse peak value of 50 Imax and greater than 25 Imax during 1ms
CÊp chÝnh x¸c 1 hoÆc ( or ) 2
Class
Thö kh«ng t¶i
0.8 ... 1.15 Un
No creep on voltage variations of
T¶i khëi ®éng
Starting load max 0.4% Ib hoÆc ( or ) max 0.5 % Ib
M« men danh ®Þnh t¹i Ib -4
10 Nm 9.8 9.8 9.8 8.5 8.5 8.5 8.2 8.2 8.0 11.2 8.5 8.5 8.5 8.9 8.9 10 10 10 10
Rated torque at Ib
H»ng sè c«ng t¬ ë 50Hz vg/kWh
Meter constant at 50Hz rev/kWh 450 450 250 250 140 140 90 90 60 45 900 900 450 1750 1750 1750 1750 450 450
Tèc ®é danh ®Þnh t¹i Ib vg/ph
24.75 24.75 13.75 27.5 15.4 15.4 19.8 19.8 19.8 24.75 27 27 13.5 25.08 12.9 24.75 24.75 24.75 24.75
Rated speed at Ib rev/min
Tæn hao c«ng suÊt m¹ch ¸p ë 50Hz (1pha) t¹i Un
W/VA 1.0 / 4.0
Power consumption in voltage circuit at 50 Hz (1phase) at Un
Tæn hao c«ng suÊt m¹ch dßng ë 50Hz (1 pha) t¹i b
at Ib VA 0.45 0.45 0.45 0.9 0.9 0.9 1.0 1.0 1.2 1.6 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.45 0.45
Power consumption in current circuit at 50Hz (1phase)
O O
¶nh h­ëng cña nhiÖt ®é gi÷a -5 C vµ +45 C tõ 0,1Ib tíi Imax cos =1 O 0.09
%/ C
Temperature coefficient between -5OC and +45OC from 0.1Ib to Imax cos = 0.5 0.09
¶nh h­ëng cña ®iÖn ¸p gi÷a 0,9 vµ 1,1 Un t¹i 0,5 Imax cos =1 0.2
Voltage dependency between 0.9 and 1.1 Un at 0.5 Imax cos = 0.5 % 0.2
¶nh h­ëng cña tÇn sè gi÷a 0,95 vµ 1,05 fn t¹i 0,5 Imax cos =1 0.9
Frequency dependency between 0.95 and 1.05 fn at 0.5 Imax cos = 0.5 % 0.4
Khèi l­îng cña r« to
g 51
Weight of rotor
Thö c¸ch ®iÖn AC trong 1 phót t¹i 50 Hz
kV 2
Insulation test AC for 1 minute at 50Hz
Thö ®iÖn ¸p xung
1.2/50 s 6
Impulse voltage test kV
§­êng kÝnh lç ®Êu d©y cña ®Çu cèt (®Çu cèt dßng - ¸p)
Diameter of bore in terminal (current - voltage terminals) mm 6.5 - 5 6.5 - 5 6.5 - 5 8 - 7.5 8 - 7.5 8 - 7.5 8 - 7.5 11-7.5 11-7.5 11-7.5 6.5 - 5 6.5 - 5 6.5 - 5 6.5 - 5 6.5 - 5 6.5 - 5 6.5 - 5 6.5 - 5 6.5 - 5
Kh«ng gian bªn trong n¾p che æ ®Êu d©y dµi
Connection space inside extended terminal cover mm 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60
Khèi l­îng c«ng t¬ (n¾p PC-n¾p bakªlÝt) kg 3.5-3.7 3.5-3.7 3.5-3.7 3.8-4
Weight of meter (PC cover - Bakelite cover) 3.8-4 3.8-4 3.8-4 4-4.2 4-4.2 4-4.2 3.5-3.7 3.5-3.7 3.5-3.7 3-3.2 3-3.2 3.5-3.7 3.5-3.7 3.5-3.7 3.5-3.7

7 EMIC MV/09/2005
 ®­êng ®Æc tÝnh
TYPICAL PERFORMANCE CURVES cosj = 1
cosj = 0,5

5A - Dßng phô t¶i tíi 120%

Sai sè / Error (%)
5A load current up to 120%
+2
+1
0
-1
-2
10 50 100 120
Dßng phô t¶i / Load current (%)

Dßng phô t¶i tíi 200%

Sai sè / Error (%)
Load current up to 200%
+2
+1
0
-1
-2
10 50 100 150 200
Dßng phô t¶i / Load current (%)

Dßng phô t¶i tíi 300%

Sai sè / Error (%)
Load current up to 300%
+2
+1
0
-1
-2
10 50 100 200 300
Dßng phô t¶i / Load current (%)

Sai sè / Error (%) Dßng phô t¶i tíi 400%

Load current up to 400%
+2
+1
0
-1
-2
10 50 100 200 300 400
Dßng phô t¶i / Load current (%)

8 EMIC MV/09/2005
 S¬ ®å ®Êu d©y
CONNECTION DIAGRAMS

No . Ký hiÖu - Code M« t¶ - Description

H.1 MV3E4 3 pha 4 d©y h÷u c«ng ®Êu d©y trùc tiÕp - 3 phase 4 wire kWh meter with direct connection

H.2 MV3E4R 3 pha 4 d©y v« c«ng ®Êu d©y trùc tiÕp - 3 phase 4 wire kVARh meter with direct connection

H.3 MV3E4/3CT-PT 3 pha 4 d©y h÷u c«ng ®Êu d©y qua 3CT vµ PT - 3 phase 4 wire kWh meter with indirect connection(3CT and PT)

H.4 MV3E4R/3CT-PT 3 pha 4 d©y v« c«ng ®Êu d©y qua 3CT vµ PT - 3 phase 4 wire kVARh meter with indirect connection(3CT and PT)

H.5 MV3E4/3CT 3 pha 4 d©y h÷u c«ng ®Êu d©y qua 3CT - 3 phase 4 wire kWh meter with indirect connection(3CT)

H.6 MV3E4R/3CT 3 pha 4 d©y v« c«ng ®Êu d©y qua 3CT - 3 phase 4 wire kVARh meter with indirect connection(3CT)

H.7 MV3E4/2CT-PT 3 pha 4 d©y h÷u c«ng ®Êu d©y qua 2CT vµ PT - 3 phase 4 wire kWh meter with indirect connection(2CT and PT)

H.8 MV3E4R/2CT-PT 3 pha 4 d©y v« c«ng ®Êu d©y qua 2CT vµ PT - 3 phase 4 wire kVARh meter with indirect connection(2CT and PT)

H.9 MV2E3/2CT-PT 3 pha 3 d©y h÷u c«ng ®Êu d©y qua 2CT vµ PT - 3 phase 3 wire kWh meter with indirect connection(2CT and PT)

H.10 MV2E3/2CT-2PT 3 pha 3 d©y h÷u c«ng ®Êu d©y qua 2CT vµ 2PT - 3 phase 3 wire kWh meter with indirect connection(2CT and 2PT)

H.11 MV2E3/2CT 3 pha 3 d©y h÷u c«ng ®Êu d©y qua 2CT - 3 phase 3 wire kWh meter with indirect connection(2CT)

H.12 MV3E4R/2CT 3 pha 4 d©y v« c«ng ®Êu d©y qua 2CT - 3 phase 4 wire kVARh meter with indirect connection(2CT)
H.13 MV3E4/3CT-2PT 3 pha 4 d©y h÷u c«ng ®Êu d©y qua 3CT vµ 2PT - 3 phase 4 wire kWh meter with indirect connection(3CT and 2PT)

H.14 MV3E4R/3CT-2PT 3 pha 4 d©y v« c«ng ®Êu d©y qua 3CT vµ 2PT - 3 phase 4 wire kVARh meter with indirect connection(3CT and 2PT)

H.15 MV2E3 3 pha 3 d©y h÷u c«ng ®Êu d©y trùc tiÕp - 3 phase 3 wire kWh meter with direct connection

H.16 MV3E4R/2CT-2PT 3 pha 4 d©y v« c«ng ®Êu d©y qua 2CT vµ 2PT - 3 phase 4 wire kVARh meter with indirect connection(2CT and 2PT)
MV3E4R

H.1 H.2
MV3E4

1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11

A A
B B
C C
0 0
MV3E4R/3CT-PT
MV3E4/3CT-PT

H.3 H.4

1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11

A A
B B
C C
0 0
MV3E4R/3CT
MV3E4/3CT

H.5 H.6

1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11

A A
B B
C C
0 0

9 EMIC MV/09/2005
 MV3E4R/2CT-PT
MV3E4/2CT-PT
H.7 H.8

1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11

A
B A
C B
0 C
0
MV2E3/2CT-PT

MV2E3/2CT-2PT
H.9 H.10

1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11

A
A
B B
C C
MV2E3/2CT

MV3E4R/2CT

H.11 H.12

1 2 3 4 5 6 7 8 9 10 11

1 2 3 4 5 6 7 8 9 10 11

A A
B B
C C
0
MV3E4R/3CT-2PT
MV3E4/3CT-2PT

H.13 H.14

1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 9 10 11

A A
B B
C C
0 0
MV3E4R/2CT-2PT
MV2E3

H.15 H.16

1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11

A A
B B
C C
0

10 EMIC MV/09/2005
 H­íng dÉn sö dông INSTRUCTION

1. Khi vËn chuyÓn tr¸nh rung xãc, va ®Ëp m¹nh. 1. Avoid strong shaking and impacting during
2. B¶o qu¶n, l¾p ®Æt ë n¬i kh« r¸o, tr¸nh bôi, h¬i ho¸ transportation.
chÊt ¨n mßn kim lo¹i, n¬i cã chÊt dÔ ch¸y næ, n¬i sinh 2. Maintain, install at dry place, avoid dust, chemical,
nhiÖt hay chÊn ®éng m¹nh. burning and exploded materials, heat-emitting or strong
shaking and impacting places.
3. Khi l¾p ®Æt, C«ng t¬ ®iÖn ph¶i ë vÞ trÝ th¼ng ®øng, gãc 3. Meter must be in vertical working position (Permissible
lÖch vÒ c¸c phÝa kh«ng qu¸ 3O. tolerance ±3O).
4.Yªu cÇu chän ®óng tiÕt diÖn d©y dÉn. C¸c ®Çu d©y 4. Chose right section of conducting wires. The end of multi-
c¸p nhiÒu sîi cÇn xo¾n chÆt vµ m¹ thiÕc. C¸c ®Çu thread wires are plaited and tin-plated. The end of wires
d©y ph¶i b¾t chÆt víi ®Çu cèt C«ng t¬ ®iÖn ®Ó gi¶m shall be screwed tightly into terminal of meter for
®iÖn trë tiÕp xóc. reducing contacting resistance.
5. Khi ®Êu d©y ph¶i theo ®óng S¬ ®å ®Êu d©y bªn trong 5. Meter must be properly connected according to the
N¾p che æ ®Êu d©y. connection diagram marked inside terminal cover.
Note : Connect properly in polarity and phase order.
Chó ý ®Êu ®óng cùc tÝnh vµ thø tù pha. NÕu ®Êu sai,
Meter must be changed phase order if meter was run
khi kh«ng t¶i C«ng t¬ ®iÖn cã hiÖn t­îng tù quay, cÇn
with no-load.
®¶o l¹i ®óng thø tù pha.

m« t¶ ®Æt hµng Ordering details

Khi ®Æt hµng ®Ò nghÞ chØ râ : When ordering, please specify :

Lo¹i c«ng t¬ Meter type
CÊp chÝnh x¸c Class
§iÖn ¸p danh ®Þnh Un Rated voltage Un
TÇn sè danh ®Þnh fn Rated frequency fn
Dßng ®Þnh møc vµ dßng qu¸ t¶i Ib (Imax) Basic and overload current Ib (Imax)
Lo¹i gèi ®ì d­íi (ch©n kÝnh hoÆc tõ) Lower bearing type (jewel or magnetic)
Lo¹i bé sè (th­êng hoÆc 1 h­íng) Register type (normal or uni-directional)
Lo¹i n¾p (BakªlÝt hoÆc nhùa PC trong suèt) Cover type (Phenolic or PC transparent plastic)
Lo¹i n¾p che æ ®Êu d©y (dµi hoÆc ng¾n...) Terminal cover type (extended or short...)
C¸ch ®Êu d©y (trùc tiÕp hoÆc gi¸n tiÕp) Voltage link (external or internal of cover)
CÇu nèi ®iÖn ¸p (ngoµi hoÆc trong n¾p) Connection (Direct or indirect)
Lo¹i biÓu gi¸ (1 biÓu gi¸ hoÆc 2 biÓu gi¸, 3 biÓu gi¸) Tariff type (single-tariff or two-tariff, three-tariff)
C¸c th«ng sè kh¸c sÏ lµm theo yªu cÇu cña kh¸ch Other data will be made following customer's requirements
hµng.

11 EMIC MV/09/2005
 D©y chuyÒn l¾p r¸p c«ng t¬ /Meter assembling line

12 EMIC MV/09/2005