Detailed Three - Phase Electromechanical Watt - Hour Meter Description
HLT01 three - phase four - wire meter is designed to meet the latest
IEC60521 and BSEN60521 standards for measuring active energy in
three - phase four - wire alternating current power grids. The average service life ()
of the meter is 15 years and the maximum overload capacity is 400%Ib. Connection is
direct or by instrument - transformers.
Features:
a) Meter case:
1) Consists of a base, cover and a terminal cover
2) Meets the protection requirements of IEC60529
3) Available in assorted designs
b) Terminal block:
1) Steel or PC base for meter
2) Terminal block is molded of heat- and flame - resistant bakelite
3) Voltage test link can be located inside or outside of the meter
case
c) Driving system:
1) With three electromagnet elements
2) Each element consists of a voltage element and a current element,
both of which are mounted on the meter frame with two screws
3) Voltage coil is enwrapped in a thermoplastic case to ensure fine
insulation
4) Voltage element has a low load and inductive load adjustment
mechanism
Technical data
a) Meter type: HLT01 ()
b) Applicable standards: IEC60521
c) Reference voltage ():
1) 3 x 57.7 / 100V
2) 3 x 220 / 380V
3) 3 x 230 / 400V
4) 3 x 240 / 415V
d) Reference frequency (): 50Hz, 60Hz
e) Power losses in voltage circuit at Un 50Hz: 1.0W / 5VA
f) Non - running with no - load: 0.8~1.1 Un
g) Starting current: 0.5%Ib
h) Rated load toque at unity PF, Ib: >850μ Nm
i) Rotor weight: 54g
j) Meter weight: ~3.1kg
k) Meter base: steel, bakelite
l) Meter cover: ABS, bakelite, transparent PC
m) Terminal cover: ABS, bakelite, PC
n) Register: cyclometer single, unidirectional
o) Option: reverse running stopper
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