MODEL: BCT

BCT SPECIFICATIONS

ES-3137 Rev.8 Page 1/3

http://www.m-system.co.jp/

Space-saving Two-wire Signal Conditioners B-UNIT

CT TRANSMITTER

Functions & Features

• Converting an alternating current from a current

transformer into an isolated 4 – 20 mA DC signal

• Minimal ripple

• True RMS sensing

• CT Protector provided for open-circuit protection

• Monitor terminals

• High-density mounting

Typical Applications

• Centralized monitoring and control of motors, pumps or

heaters by DCS

• Monitoring power line and power supply current

93 (3.66)

(mm)

137 (5.39)

26 (1.02)

MODEL: BCT–[1][2]

ORDERING INFORMATION

• Code number: BCT-[1][2]

Specify a code from below for each of [1] and [2].

(e.g. BCT-1/Q)

• Specify the specification for option code /Q

(e.g. /C01/S01)

[1] INPUT

Current

1: 0 – 1 A AC

5: 0 – 5 A AC

[2] OPTIONS

blank: none

/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)

COATING (For the detail, refer to M-System's web site.)

/C01: Silicone coating

/C02: Polyurethane coating

/C03: Rubber coating

TERMINAL SCREW MATERIAL

/S01: Stainless steel

GENERAL SPECIFICATIONS

Construction: Plug-in

Connection: M3.5 screw terminals (torque 0.8 N·m)

Screw terminal: Nickel-plated steel (standard) or stainless

steel

Housing material: Flame-resistant resin (black)

Isolation: Input to output

Input waveform: Up to 15 % of 3rd harmonic content

Zero adjustment: -5 to +5 % (front)

Span adjustment: 95 to 105 % (front)

INPUT SPECIFICATIONS

Frequency: 50 or 60 Hz

Input burden: 0.5 VA maximum

Overload capacity: 1000 % of rating for 3 sec., 200 % for 10

sec., 120 % continuous

Operational range: 0 – 120 % of rating

OUTPUT SPECIFICATIONS

Output: 4 – 20 mA DC

Load resistance vs. supply voltage:

Load Resistance (Ω) = (Supply Voltage (V) – 12 (V)) ÷ 0.02

(A)

(including leadwire resistance)

0

10

20

30

40

50

60

0.0

0.5

1.0

1.5

2.0

2.5

SUPPLY VOLTAGE [V]

(600Ω maximum at 24V DC)

2.4

12

INSTALLATION

Supply voltage: 12 – 60 V DC

Operating temperature: -5 to +55°C (23 to 131°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Surface or DIN rail; Standard Rack Mounting

Frame BX-16H available

Weight: 160 g (0.35 lb)

PERFORMANCE in percentage of span

Accuracy: ±0.3 %

Temp. coefficient: ±0.03 %/°C (±0.02 %/°F)

Response time: ≤ 0.5 sec. (0 – 90 %)