Product Specification Sheet
Model: MS5520
Plug-In CT Transmitter with Isolated Single Output

MS5500DESCRIPTION

51

The MS5520 is a plug-in CT transmitter that calculates therms values of AC current signals from a CT, converts theminto commonly used DC signals, and provides an isolated
single output.

SZ

85

ORDERING CODE

MS5520 --_Model
136.5

Power Supply
A: 100 to 240V AC (50 to 60Hz)
D: 24V DC
P: 100 to 240V DC
Input (AC Current Signal)
1: 0 to 1A AC, 50/60Hz
5: 0 to 5A AC, 50/60Hz
OutputA: 4 to 20mA DC
D: 0 to 20mA DC
Z: Other DC current signals

1: 0 to 10mV DC
2: 0 to 100mV DC
3: 0 to 1V DC
4: 0 to 10V DC
5: 0 to 5V DC
6: 1 to 5V DC
3W: ±1V DC
4W: ±10V DC
5W: ±5V DC
0: Other DC voltage signals

Options
No code: None
/H: Polyurethane conformal coating/X: Others (Special order)* For non-standard options, ask MTT for availability.

ORDERING INFORMATION
To place an order, please use the ordering code format
as shown above.
(e.g.) MS5520-A-56
Other Ordering Examples:
For an output code of “0”: MS5520-A-10 (Output: 2 to 5V)
For an option code of “X”: MS5520-A-1A/X (0-90%
response time: 100ms max.)(mm)

SPECIFICATIONS●POWER SECTION
PowerRequirements

100 to 240V AC: 85 to 264V AC (47to 63Hz)
24V DC: 24V DC±10%
100 to 240V DC: 85 to 264V DC
Power Sensitivity
Better than ±0.1% of span for eachpower supply range.
Power Line Fuse
160mA fuse
Maximum Power Consumption
Power100-240V AC 24V DC 100-240V DC
Approx.
Approx.
Approx.
4.5VA
1.2W
4.8W

●INPUT SECTION
Input Resistance
Allowable InputCurrent
Crest Factor

5A AC input: 2mΩ (Shunt resistor)
1A AC input: 10mΩ (Shunt resistor)
Continuous: 120% of the rated input
valueInstantaneous: 10 times the rated
input value (within 3 seconds)
3 max.

●OUTPUT SECTION
Allowable Output Load
Voltage Output (DC) 1V span and up
2mA max.
10mV
10kΩ min.
100mV
100kΩ min.
Current Output (DC) 4 to 20mA
750Ω max.
Zero Adjustment
Approx. ±5% of span.
(Adjustable by the front-accessible
trimmer.)
Span Adjustment
Approx. ±5% of span.
(Adjustable by the front-accessibletrimmer.)
Ranges Available
Current Signal
Voltage Signal
Output Range (DC)
0 to 20mA-10 to 10V
Output Span (DC)
4 to 20mA
10mV to 20V
Output Bias
0 to 100%-100 to 100%
* For current output signals, the accuracy of any current
output smaller than 0.1mA is not guaranteed.
Output Spec. Ex. 1: For 4 to 20mA output, the output span
is 16mA and the bias +25%.
Output Spec. Ex. 2: For -1 to 4V output, the output span is5V and the bias -20%.

Rev. 1.40

Page: 1/2

Product Specification SheetModel: MS5520

Plug-In CT Transmitter with Isolated Single Output●PERFORMANCE●MATERIAL

Accuracy Rating

HousingSocket
Screw Terminal

Temperature
EffectResponse Time
CMRR
Isolation
Insulation
ResistanceDielectric Strength
Surge Withstand
Capability
Operating
Environment
Storage
Temperature

Better than ±0.25% of span with atleast 10% input (at 25°C±5°C).
Better than ±0.2% of span per 10°C
change in ambient.
400ms max. (0 to 90%) with a step
input at 100%.
100dB min. (500V AC, 50/60Hz)
3-way isolation between input,output, and power.
100MΩ min. (@ 500V DC) between
input, output, and power.
Input / Output / Power: 2000V AC
for 1 minute (Cutoff current: 0.5mA)
Tested as per ANSI/IEEE
C37.90.1-1989.
Ambient temperature: -5 to 55°C
Humidity: 5 to 90% RH(non-condensing)-10 to 60°C

ABS resin (UL 94V-0)
ABS resin (UL 94V-0)
Galvanized steel with trivalentchromate finish
Glass fabric, epoxy resin(FR-4: UL 94V-0)

Printed Circuit
Board

TERMINAL ASSIGNMENTS+ OUTPUT− OUTPUTL INPUTN INPUT
N.C.
N.C.
P (+)
N (−)

POWER

●PHYSICAL
Installation
Mounting Direction
Screwing Torque
WiringExternalDimensions
WeightWall/DIN rail mounting
Vertical
0.78 to 1.18 [Nm] * Recommended
M3.5 screw terminal connection
The supplied protector should beconnected to the terminal block.
W51 × H85 × D136.5 mm(including the socket, but notincluding the protector)
Main unit: 200g max.
Socket: 60g max.
Protector: 22g max.







BLOCK DIAGRAMPROTECTORZLRMS CALC.

SAmp.

CT

OUTPUT
ISOLATIONISOLATION

CIRCUITCIRCUITOUTPUT +CIRCUITOUTPUT −N

POWERSUPPLY

P (+)
N (−)

POWER
CIRCUIT

Rev. 1.40

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