SchK96, SchK120

The meters are intended to measure and convert current, voltage and frequency in one-phase and three-phase electrical circuits and other AC circuits into output unified DC signals and to transmit measured values through serial digital interface RS485.





Specifications
Documentation
Overall drawings
Related products

Type

Overall dimensions, mm

Panel cutout, mm

Sign height, mm

Weight, kg, max.

SchK96

96 х 96 х 103 (w/ rear cover)

96 х 96 х 75,6 (w/o rear cover)

92х92

14

0.4

SchK120

120 х 120 х 103 (w/ rear cover)

120 х 120 х 75,6 (w/o rear cover)

112х112

20

0.5

Accuracy class

0.5 or 1.0

Temperature range (operating)

-40 °С... +55 °С (UKhL3.1)

Maximum indication range

0...9999

Standard frequency range measured signals

45...65 Hz

Number of measuring channels

1, 2 or 3

Protection extent on the front frame

IP40

Interface

RS485 (protocol Modbus RTU)

Interface exchange rate

9600, 19200, 38400, 57600 baud.

Analogue output per each displayed parameter (accuracy class 0.5)

0...5 mA, 0…20 mA, 4...20 mA

Digital output

DC voltage 300 V, 100 mA or

AC voltage 200 V, 100 mA

Maximum permissible input signal overload

150% (2 hours)

Time of setting output analogue signal, max

1.0 s

Power supply

– 12 VN (12+6/-3) VDC,

– 24 VN (24+12/-6) VDC,

– 220 VU from 85...253 VAC, (50 ± 0.5) Hz or 120 ... 265 VDC,

– 230 V from 85...253 VAC, (50 ± 0.5) Hz

Power consumption, max

12.5 V•А

Input resistance at voltage measurement, min.

– 50 kΩ For the meters with measurement limit of 50 V;

– 100 kΩ For the meters with measurement limit of 100 V;

– 250 kΩ For the meters with measurement limit of 250 V;

– 450 kΩ For the meters with measurement limit of 500 V.

Voltage drop at the input when measuring current (max.):

for measurement range 500 mA, 1000 mA, 2000 mA, 1 А, 2 А, 5 А

30 mV

Calibration interval

36 months

Guarantee period

24 months

Mean life, min

15 years

Mean time between failures, min

100,000 h

Note: it is possible to connect the outer circuits according to the designation of connector contacts to the terminals “for screw” using a cord of up to 4 mm2 in cross-section, multi-core wires of up to 2.5 mm2. When connecting supply DC voltage of 120...265 V to power contacts “L”, “N”, any polarity is possible.

Order form

SchK а – b1, b2, b3 – c – d – e – f – g – h – i

а – meter type (by dimensions):

SchK96 – 96х96

SchK120 – 120х120

b1, b2, b3 – measurement range*:

V: 50; 100; 250; 500

mA: 500

А: 1; 2; 5

V**: 380; 660

kV**: 3; 6; 10; 11; 15; 20; 35; 100; 110; 150;

220; 330; 400; 500; 750

А***: 1; 5; 10; 15; 20; 30; 40; 50; 75; 80; 100;

150; 200; 300; 400; 500; 600; 750; 800

kA***: 1; 1,2; 1,5; 2;3; 4; 5; 6; 8; 10; 12; 14; 16; 18; 20;

25; 28; 30; 32; 35; 40

Hz****: 45…65

* – measurement range is specified for each channel

** – connection through outside voltage transformer with secondary winding rated voltage of 100 V.

*** – connection through outside current transformers with secondary winding rated current of 1 A or 5 A

**** – first channel voltage frequency

с – digit:

4,0

d – power:

12 VN (12+6/-3) VDC

24 VN (24+12/-6) VDC

220 VU from 85...253 VAC, (50 ± 0.5) Hz or 120...265 VDC

230 V from 85...253 VAC, (50 ± 0.5) Hz

e – interface:

RS – RS485 (obligatory specified)

f – digital outputs:

21 – digital output per each channel

00 – no digital outputs

g – analogue outputs:

А – 0…5 mA per each channel

B – 4…20 mA per each channel

C – 0…20 mA per each channel

– with the absence, this parameter is not specified

h – indicators colour:

R – red,

G – green,

Y – yellow

i – accuracy class:

0,5

1,0

Ordering example

SchK120-500V, 200V, 200V-4.0-24VN-RS-21-А-R-0.5 TU 25-7504.206-2009

For SchK120 meter with the measurement range the first channel – 0...500 V, the second and third channels – 0...200 V with direct connection, supply voltage of 24 VN DC, interface RS485, digital outputs, analogue outputs of 0...5 mA, red indicators, accuracy class 0.5.

Сertificate of conformity (pdf, 1.2 Mb )   View   Download
Manual (pdf, 1.4 Mb )   View   Download
Configurator (zip, 17.3 Mb )   View   Download



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