ES-3580 Rev.5
KCEZ
Plug-in Signal Conditioners K-UNIT
ZCT TRANSMITTER
(zero-phase current transformer input)
Functions & Features
• Converts an alternating current from a zero-phase current transformer into a standard process signal
• Input filter
• Isolation up to 2000 V AC
• High-density mounting
Typical Applications
• Continuous monitoring of leakage current
MODEL: KCEZ–[1][2]–[3][4]
ORDERING INFORMATION
• Code number: KCEZ-[1][2]-[3][4]
Specify a code from below for each of [1] through [4].
(e.g. KCEZ-AA-B/Q)
• Special input and output ranges (For codes Z & 0)
• Specify the specification for option code /Q
(e.g. /C01/S01)
[1] INPUT
Current
A
: 0 – 0.1 mA AC (Input resistance 10 Ω)
B
: 0 – 1.5 mA AC (Input resistance 10 Ω)
Z
: Specify current (See INPUT SPECIFICATIONS)
(0 % input must be 0 mA.)
[2] OUTPUT
Current
A
: 4 – 20 mA DC (Load resistance 750 Ω max.)
B
: 2 – 10 mA DC (Load resistance 1500 Ω max.)
C
: 1 – 5 mA DC (Load resistance 3000 Ω max.)
D
: 0 – 20 mA DC (Load resistance 750 Ω max.)
E
: 0 – 16 mA DC (Load resistance 900 Ω max.)
F
: 0 – 10 mA DC (Load resistance 1500 Ω max.)
G
: 0 – 1 mA DC (Load resistance 15 kΩ max.)
Z
: Specify current (See OUTPUT SPECIFICATIONS)
Voltage
1
: 0 – 10 mV DC (Load resistance 10 kΩ min.)
2
: 0 – 100 mV DC (Load resistance 100 kΩ min.)
3
: 0 – 1 V DC (Load resistance 100 Ω min.)
4
: 0 – 10 V DC (Load resistance 1000 Ω min.)
5
: 0 – 5 V DC (Load resistance 500 Ω min.)
6
: 1 – 5 V DC (Load resistance 500 Ω min.)
4W
: -10 – +10 V DC (Load resistance 2000 Ω min.)
5W
: -5 – +5 V DC (Load resistance 1000 Ω min.)
0
: Specify voltage (See OUTPUT SPECIFICATIONS)
[3] POWER INPUT
AC Power
B
: 100 V AC
C
: 110 V AC
D
: 115 V AC
F
: 120 V AC
G
: 200 V AC
H
: 220 V AC
J
: 240 V AC
DC Power
S
: 12 V DC
R
: 24 V DC
[4] OPTIONS
blank
: none
/Q
: With options (specify the specification)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our 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
Screw terminal
: Chromated steel (standard) or stainless steel
Housing material
: Flame-resistant resin (black)
Isolation
: Input to output to power
Overrange output
: 0 to 120 % at 1 – 5 V
Zero adjustment
: -5 to +5 % (front)
Span adjustment
: 95 to 105 % (front)
INPUT SPECIFICATIONS
■
AC Current
: 0 – 100 mA AC
Input resistance:
10 Ω incorporated
Minimum span:
0.1 mA
Note: The primary current depends upon the number of windings (winding ratio) of the zero-phase current transformer.
[Examples]
Winding ratio: 2000 : 1, Transmitter input 0.1 mA
0.1 × 2000 = 200 (mA)
Winding ratio: 133 : 1, Transmitter input 1.5mA
1.5 × 133 = 200 (mA)
OUTPUT SPECIFICATIONS
■ DC Current
: 0 – 20 mA DC
Minimum span
: 1 mA
Offset
: Max. 1.5 times span
Load resistance
: Output drive 15 V max.
■
DC Voltage
: -10 – +12 V DC
Minimum span
: 5 mV
Offset
: Max. 1.5 times span
Load resistance
: Output drive 10 mA max.; 5 mA for negative voltage output; at ≥ 0.5 V
INSTALLATION
Power input
•
AC
: Operational voltage range: rating ±10 %,
50/60 ±2 Hz, approx. 3 VA
•
DC
: Operational voltage range: rating ±10 %,
ripple 10 %p-p max., approx. 2 W (80 mA at 24 V)
Operating temperature
: -5 to +55°C (23 to 131°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Mounting
: Surface or DIN rail
Weight
: 400 g (0.88 lb)
PERFORMANCE in percentage of span
Accuracy
: ±1 %
Temp. coefficient
: ±0.05 %/°C (±0.03 %/°F)
Response time
: ≤ 0.7 sec. (0 – 90 %)
Ripple
: 0.5 %p-p max.
Line voltage effect
: ±0.1 % over voltage range (±1 % for the input spans narrower than 1 mA (input codes A, Z))
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 2000 V AC @1 minute (input to output to power to ground)
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM