Multifunction digital panel meters SchM96, SchM120
Specifications
Documentation
Overall drawings
Related products
|
Type |
Overall dimensions, mm |
Sign height, mm |
Weight, kg, maximum |
|
SchM96 |
96 х 96 х 75,6 |
20 |
0,5 |
|
SchM120 |
120 х 120 х 75,6 |
25 |
0,9 |
|
Measured and calculated parameters |
Basic error, % |
Designation |
Measured parameters |
|
|
SchM96, SchM120 |
SchM96PQ, SchM120PQ |
|||
|
Phase voltage RMS |
±0,2 |
UA, UB, UC |
+ |
- |
|
Average voltage RMS |
±0,2 |
Uav.ph |
+ |
- |
|
Phase-to-phase voltage RMS |
±0,2 |
UAB, UBC,UCA |
+ |
- |
|
Average effective line-to-line voltage value |
±0,2 |
Uav.l |
+ |
- |
|
Effective phase current value |
±0,2 |
IA, IB, IC |
+ |
- |
|
Average effective phase current value |
±0,2 |
Iav. |
+ |
- |
|
Active load phase power |
±0,5 |
РA, РB, РC |
+ |
+ |
|
Total active power |
±0,5 |
Р |
+ |
+ |
|
Reactive load phase power |
±0,5 |
QA, QB, QC |
+ |
+ |
|
Total reactive power |
±0,5 |
Q |
+ |
+ |
|
Full load phase power |
±0,5 |
SA, SB, SC |
+ |
+ |
|
Total gross reactive power |
±0,5 |
S |
+ |
+ |
|
Power factor in each phase |
±0,5 |
Cos φA, Cos φB, Cos φC |
+ |
- |
|
Total power factor |
±0,5 |
Cos φ |
+ |
- |
|
Frequency |
±0,01 Hz |
F |
+ |
- |
|
Information display |
|
|
Type of display |
Display of measured parameters of current, voltage, frequency, power, power factors, power flow direction, units of measurements |
|
Seven-segment indicators |
7-digit LED (3 lines of 4 digits), digit height: 25 mm (SchM120), 20 mm (SchM96) |
|
Additional features |
Connection of indication modules MI120, MI80 |
|
Telemetry |
|
|
Rated voltage |
0,5 А; 1 А; 2,5 А; 5 А |
|
Rated current |
100 V, 400 V |
|
Frequency |
45...55 Hz |
|
Measurement time |
0.1 s |
|
Time of setting output analogue signal, max |
0.5 s |
|
Basic error limits |
by current and voltage: ± 0.2%; by power: ± 0.5 %; by frequency: ± 0.01 Hz; by analogue output: ± 0.5% |
|
Galvanic isolation of input and output circuits, power circuits |
Yes |
|
Short-term overloads by input signal with ratio (maximum) |
Ratio: 20; number of overloads: 2; duration of each overload, s: 0.5; interval between two overloads, s 0.5. |
|
Input resistance, min by current circuits: by voltage circuits: |
0.02 Ω 2 MΩ |
|
Communication interfaces/analogue output |
|
|
RS485 |
Quantity: 1,2; protocols: Modbus RTU Data rate: 4800, 9600, 19200, 38400, 57600 baud. |
|
Ethernet (100 BASE TX) |
Quantity: 0,1; protocols: Modbus TCP, IEC 60870-5-104 |
|
Analogue output |
Quantity: 0,1,2,3; reprogrammed ranges: 0...5 mA, 4...20 mA, 0…20 mA, 0...2.5...5 mA, 4...12...20 mA, 0…10…20 mA, -5...0...+5 mA |
|
Remote indication |
|
|
Digital inputs |
Quantity: 0, 4, 6, 8, “dry contact” type, voltage 24 V, current 10 mA |
|
Distant control |
|
|
Digital outputs |
Quantities: 0, 1, 2, 3 (switch on/off, interlocking) = 300 V, ~200 V, 100 mA |
|
Power supply voltage |
|
|
Power supply |
– 220 VU – universal power from 85 to 253 VAC, 50 Hz or from 120 to 265 VDC; – 24 VN (24+12/-6) V |
|
Power consumption from power circuit, max. |
15 VA |
|
Meter reprogramming (setting) |
|
|
Reprogramming |
– via program “Configuration Manager” (interface RS485, Ethernet); – with buttons on the front frame (if any). |
|
Reprogramming parameters |
– indices range (meters with rated currents of 1 A, 5 A and voltage of 100 V) – password setting; – indication update period: from 0.1 to 10 s; – position of decimal point; – settings for each electrical value (with discrete outputs of up to 3 control signals for commutation equipment); – Interfaces RS485, Ethernet parameters; – output signal parameters; – indication brightness; – parameters of protocol Modbus RTU, Modbus TCP, IEC 60870-5-104 (via program “Configuration Manager»); – Calibration of input and output signals. |
|
Operation Conditions |
|
|
Temperature operation range |
from -40°С to +70°С |
|
Protection extent |
IP50 |
|
Installation |
Panel |
|
Wires section |
2.5 mm2 |
|
Maximum input signal overload (duration) |
150% (2 h) |
|
Calibration interval |
10 years |
|
Guarantee period |
60 months |
|
Average service life, min |
30 years |
|
Mean time between failures |
250,000 h. |
Order form
SchMa – b – с – d – e – f – g – h – i – j
SchMa – meter type depending on its overal dimensions:
SchM96; SchM120;
b – rated voltage:
– line voltage – 100 V, 400 V;
– voltage transformation factor (rated secondary winding voltage of 100 V);
c – rated current:
– phase current – 0.5 А; 1.0 А; 2.5 А; 5.0 А;
– current transformation factor (rated secondary winding current of 1 А and 5 А);
d – reference designation of supply voltage:
– 220 VU – universal power: supply voltage of 85 to 253 VAC, 50 Hz or 120 to 265 VDC;
– 24VN – DC supply voltage of (24+12/-6) V;
e – reference designation for availability of additional interface RS485 and digital inputs:
– х – absence of additional interface and digital inputs,
– RSX – availability of additional interface with the absence of digital inputs,
– RS04 – availability of additional interface and 4 digital inputs,
– RS06 – availability of additional interface and 6 digital inputs (for SchM120 only),
– Х08 – absence of additional interface with the availability of 8 digital inputs;
Note: with the absence of digital inputs (е = х, е = RSX) the meter may have a design with output signals (analogue or digital).
f – reference designation for the availability of interface Ethernet, hours of real time:
– х – specified with the absence,
– RE – availability of interface Ethernet;
g – reference designation of measurement design:
– 3W - for three-wire connection scheme,
– 4W - for four-wire connection scheme;
h – indicators colour
– R – red indicators,
– G – green indicators,
– Y – yellow indicators,
– TS – (“Touch Screen”) colour liquid-crystalline display (TS for SchM120 only);
i – availability of output signals
– х – specified with the parameter absence;,
– 01 – availability of one digital output;
– 02 – availability of two digital output;
– 03 – availability of three digital output;
– 10 (a) – availability of one output analogue signal,
– 20 (a, b) – availability of two output analogue signals,
– 30 (a, b, c) – availability of three output analogue signals where а, b, c – reference designations of measurement ranges of output analogue signals (А = 0…5 mA; В = 4… 20 mA;
С = 0…20 mA; АР = 0…2.5…5 mA; ВР = 4…12…20 mA;
СР = 0…10…20 mA; ЕР = -5…0…5 mA) (Example: (30 (С, А, В); 30 (В, В, С); 20 (С, В); 20 (А, А); 10 (А));
j – custom design
– otherwise, this parameter is not specified
– P – active power meter design;
– Q – reactive power meter design;
– PQ – active and reactive power meter design.
|
SchMa meter type |
Full reference designation code parameter |
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|
Rated value or factor of transformation |
Power supply voltage |
Availability of additional interface and digital inputs |
Availability of interface Ethernet |
Reference designation of measurement design |
Indication colour |
Availability of output signals |
Custom design |
||
|
b |
c |
d |
e |
f |
g |
h |
i |
j |
|
|
SchM96 |
U; U/100 |
I;I/1; I/5 |
+ |
х; RSX |
x; RE |
+ |
R, Y, G |
+ |
+ |
|
RS04; X08 |
х |
||||||||
|
SchM120 |
U; U/100 |
I;I/1; I/5 |
+ |
х; RSX |
x; RE |
+ |
R, Y, G |
+ |
+ |
|
RS04; RS06; X08 |
х |
||||||||
|
Notes Sign “+” means that availability of all possible versions of a parameter in the order formula. Sign “x” means that no parameter is available. |
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Ordering example
SchM120 – 400V – 5А – 220VU – RSX – х – 4W – Y – 30 (А, В, СР) TU 25-7504.211.1-2010
For SchM120 meter with the following characteristics: rated voltage of 400 V, rated current of 5.0 A, supply voltage of 85 to 253 VAC, 50 Hz or 120 to 265 VDC, the availability of additional interface RS485, 4-wire measurement design, yellow indicator colour, availability of 3 analogue outputs (0…5) mA; (4…20) mA; (0…10…20) mA.
