MHCO General Characteristics D.C. MEASURING CONVERTER • Converter for D.C. Current and/or Voltage measurement. • Direct connection to D.C. mains rating up to 4 kVcc. • Fully isolated multi-voltage power suppy. • Fiber optic connection between HV transducer and LV reciving unit. • Measurement channel fully diagnosed The technical specifications reported are not binding and they should be agreed in the related contract. Transducers The transducer MHCO provide a measurement of current or voltage fully isolated and safe. The transducer includes three components: Transmitter, Riceiver, Fiber Optic. Transmitter The Transmitter, connected to the system, acquires the inputs and througth a fiber optic transmits it to the receiver. The test voltage isolation between inputs and power supply is equal to 20kV 50Hz 1min. Voltage Transmitter MHCO-TV Converter for Voltage measurement direct connection to D.C. line up to 4000V (voltage divider inside) Current Transmitter MHCO-TI Transmitter for measuring current, directly connected to the high voltage line through normal shunt . Current/Voltage Transmitter MHCO-TVI Transmitter current and voltage in a single unit directly connected to the high voltage line (max 4000Vcc) through the shunt. Riceiver Current and Voltage Receiver MHCO-RV MHCO-RI voltage measurements current measurements Fiber Optic The optical fiber used for the connection between the transmitter and receiver (equipped with ST connectors) must have the following characteristics: Plastic: 200u HCS - Glass: 62.5/125 The standard length of the optical fiber is 5 meters. (other lengths available on request). The Receiver connected via optical fiber to the transmitter has three configurable linear analog outputs, - one relay output for alarm and internal fault. MHCO-RI MHCO-RV MHCO-TVI M02 NG 18 -I -Rev.
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Transducers · Operation ambient temperature EN60870-2-2 class C1 (3k5) -10°C / +55°C Environmental testing ()Cold ()Dry heat ... level 3 6kV contatto / 8kV aria B
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MHCO
General Characteristics
D.C. MEASURING CONVERTER
• Converter for D.C. Current and/or Voltage measurement.
• Direct connection to D.C. mains rating up to 4 kVcc.
• Fully isolated multi-voltage power suppy.
• Fiber optic connection between HV transducer and LV
reciving unit.
• Measurement channel fully diagnosed
The technical specifications reported are not binding and they
should be agreed in the related contract.
Transducers
The transducer MHCO provide a measurement of current or voltage fully isolated and safe.
The transducer includes three components: Transmitter, Riceiver, Fiber Optic.
Transmitter
The Transmitter, connected to the system, acquires the inputs and througth a fiber optic transmits it to the receiver.
The test voltage isolation between inputs and power supply is equal to 20kV 50Hz 1min.
Voltage Transmitter
MHCO-TV Converter for Voltage measurement direct connection to D.C. line up to 4000V
(voltage divider inside)
Current Transmitter
MHCO-TI Transmitter for measuring current, directly connected to the high voltage line through normal shunt .
Current/Voltage Transmitter
MHCO-TVI Transmitter current and voltage in a single unit directly connected to the high voltage line
(max 4000Vcc) through the shunt.
Riceiver
Current and Voltage Receiver
MHCO-RV
MHCO-RI
voltage measurements
current measurements
Fiber Optic
The optical fiber used for the connection between the transmitter and receiver (equipped with ST connectors) must have the following
Connessioni A vite (M6) per ingressi di misura / ST per F.O. / Morsetti 2.5mm per Vaux2Connection terminals Bolt type terminals (M6) for inputs; ST for the F.O. ;
Power supply consumption �5 VA
Characteristics Voltage Transmitter MHCO-TVDirectly connected to the H.V. line via voltage dividerinternal
Measurement dynamic range ( ) ( )1 20 2 In; 0 10 In (x DIA / U-MLEs) - (1% 4)� � for auxiliary output
Measurement accuracy 0.1% In (-20 to +70)°C
Sampling frequency 32.2 kHz
Response time 0.5 msec. ( )compensated
Enclosure Material: BMCRF9 protection degree IP55
Connessioni A vite (M6) per ingressi di misura / ST per F.O. / Morsetti 2.5mm per Vaux2Connection terminals Bolt type terminals (M6) for inputs; ST for the F.O. ;
Power supply consumption �5 VA
Characteristics Current Transmitter MHCO-TIDirectly connected to the H.V. line across a normal measuring shunt
Diagnostic of Shunt's interruption Signalization via Fiber Optic
Screw type 2.5 mm for Power Supply2
M0
2N
G1
8-I
-Re
v.
Power supply consumption
Characteristics Voltage Receiver (MHCO-RV)
Power supply voltage
� 8VA
( ) N.D.1
( ) (230)Vac 20%5 �( ) (33 70)Vdc2 �
( ) (85 160)Vdc3 �
( ) (110)Vac 20%4 �
Measuring input Fiber Optic transmitter MHCO-TV
Outputs (configurable on request) 3 current loop outputs; Max. output power 0 7VA – 13 5V. .
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