1. Manuals
  2. Brands
  3. JIANGSU Manuals
  4. Measuring Instruments
  5. Sfere720A
  6. User manual

JIANGSU Sfere720A User Manual

Multi-function power meter
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Multi-function Power Meter
User Manual
Applied to:
Sfere720A
Sfere720B
JIANGSU SFERE ELECTRIC CO., LTD.

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Sfere720A and is the answer not in the manual?

Questions and answers

Related Manuals for JIANGSU Sfere720A

Summary of Contents for JIANGSU Sfere720A

  • Page 1 Multi-function Power Meter User Manual Applied to: Sfere720A Sfere720B JIANGSU SFERE ELECTRIC CO., LTD.
  • Page 2 Safety instructions Dangerous voltage! Danger to life or risk of serious injury. Disconnect system and device from power supply before beginning work. Caution: Please follow the documentation. This symbol warns of possible danger that can arise during installation, commissioning work. CAUTION: ◆...

  • Page 3: Table Of Contents

    Content 1. Product description..................1 1.1 Compliance with standards..............1 1.2 General....................1 1.3 Model selection..................2 2. Technical parameters.................. 3 2.1 Technical specification................3 2.2 Function parameters................5 3. Installation and wiring................6 3.1 Meter dimensions.................6 3.2 Installation method................6 3.3 Functions of wiring terminals...............
  • Page 4 4.3.3 Signal input setting..............33 4.3.4 Communication setting............... 34 4.3.5 Relay output setting..............35 5. Communication..................36 6. Extended function..................36 6.1 Energy pulse output................36 6.2 Digital input..................37 6.3 Relay output..................37 6.4 Max./Min. value demand..............39 6.5 Event recording...................40 7. Common problems and troubleshooting..........40 7.1 About communication................

  • Page 5: Product Description

    IEC60068-2-30 Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic (12h+12h cycle) 1.2 General SFERE720A/B multi-function power meters can measure voltage, current, frequency, power, power factor, energy, harmonics and demand, record SOE events, and realize off-limit alarm. They also have the functions such as communication, digital input, relay output and energy pulse output.

  • Page 6: Model Selection

    1.3 Model selection SFERE720A SFERE720B Display mode Installation mode Panel Panel Appearance mounting mounting and accuracy Active energy accuracy 0.5S 0.5S Reactive energy accuracy U/I/P/Q/S/PF/F ▇ ▇ Real-time Demand ▇ ▇ measurement Neutral current ▇ Bi-directional energy ▇ ▇ Four-quadrant reactive energy Energy ▇...

  • Page 7: Technical Parameters

    2. Technical parameters 2.1 Technical specification Working environment -10°C to 55°C Working temperature -25°C to 70°C Storage temperature Relative humidity ≤95% RH, no condensation ≤2500m Working altitude Protection degree Front case IP64, rear case IP20. Between signal, power supply, output terminal to case Insulation resistance >100MΩ...
  • Page 8 2000 VAC / min Isolation voltage Between contact and coil: 10 ms max Action time 5 ms max Release time Mechanical service life times Energy pulse output 80ms±20% Pulse width Max. terminal voltage 10mA Max. terminal current ≤10Hz Pulse frequency Digital input ON:140～270V AC, OFF: <110 V AC Sensitivity...

  • Page 9: Function Parameters

    2.2 Function parameters Functions Sign Accuracy Range Display range 10--380 V 0--999.9 kV Voltage 0--5 A 0--99.99 kA Current 0—5.7 kW 0--9999 MW Active power 0—5.7 kvar 0--9999 Mvar Reactive power 0—5.7 kVA 0--9999 MVA Apparent power 0--1.00 0--1.000 Power factor ±0.01Hz 45--65 Hz 45.00Hz-65.00 Hz...

  • Page 10: Installation And Wiring

    3. Installation and wiring 3.1 Meter dimensions 10(m ax) 7. 5 50. 5 Picture 3-1 Meter dimensions 3.2 Installation method Picture 3-2 Front view Picture 3-3 Back view...

  • Page 11: Functions Of Wiring Terminals

    1) Open a 91×91（mm）hole on fixed switch gear； 2) Take the fixing claps off the meter； 3) Insert the meter to the cut-out； 4) Place the fixing claps, insert, fasten and fix the meter firmly on the panel. 3.3 Functions of wiring terminals Function wiring terminals adopt the following numbers: 1, 2 Power supply...
  • Page 12 Typical wiring diagram Sfere720A RS232 ～ ～ RS485 15 16 17 70 71 72 73 47 48 59 60 A B S AP/RP Sfere720B Current Inputs V3 N 5 6 7 8 12 13...

  • Page 13: Signal Input Wiring Diagram

    3.4 Signal input wiring diagram 1-Phase,1CT,no PT 1-Phase,1CT,1PT 3P3W,2C T,no PT V3 N V3 N V3 N 13 14 13 14 13 14 3P3W,3C T,no PT 3P3W,2 CT,2PT 3P3W,3 CT,2PT V3 N V3 N V3 N 13 14 13 14 13 14 3P3W,3 CT,3PT 3P4W,3C T,no PT...

  • Page 14: Display

    the terminal block. (c) To ensure the input three-phase voltage corresponding to the current, the phase sequence and direction shall be consistent, or there will be numerical and symbol error. (d) External wiring must be same with the internal wiring setting of meter, otherwise there will be a larger deviation for data measured by meter.

  • Page 15: Electrical Variables Display

    4.2.1 Electrical variables display Electrical variables display pages show voltage, current, active power, reactive power, apparent power, power factor, frequency and switch status. The detailed instruction is shown as follows. Table 4-1 Electrical variables display pages Electrical variables display Instruction Three-phase voltage U L1＝220.1V U L2＝220.2V...
  • Page 16 Frequency. F＝50.00Hz Three-phase active power, P L1＝1901W P L2＝1902W P L3＝1903W Three-phase reactive power. Q L1＝1645var Q L2＝1646var Q L3＝1647var Three-phase apparent power. S L1＝14.7kVA S L2＝14.8kVA S L3＝14.9kVA...
  • Page 17 Total active power, P＝5700W Total reactive power. Q＝4936var Total apparent power S＝45.7kVA Three-phase power factor PF L1＝0.950 PF L2＝0.960 PF L3＝0.970...
  • Page 18 Total power factor PF＝1.000 Voltage unbalance Uunb＝24.1% Current unbalance I unb＝5.8% Neutral current In＝5.06A Note: if neutral current ratio is “0”, this page will not be shown.

  • Page 19: Energy Display

    Digital input. 1 and 2 correspond to two digital inputs severally. If a digital input acts, the corresponding number will flash. Relay output. 1 and 2 correspond to two relay outputs severally. If one relay output acts, the corresponding number will flash.

  • Page 20: Spare Energy Display

    Export total active energy. EP-＝9kWh Import total reactive energy. EQ＝650kvarh Export total reactive energy. EQ-＝0kvarh 4.2.3 Spare energy display Spare energy display pages show active and reactive spare energy. When spare energy metering starts, total energy metering will stop. The detailed instruction is shown as follows,...
  • Page 21 Table 4-3 Spare energy display pages Spare energy display Instruction Total import active spare energy, BEP＝10006kWh。 Total export active spare energy, BEP-＝3000.5kWh Total import reactive spare energy, BEQ-＝7800kvarh。 Total export reactive spare energy, BEQ-＝6600.1kvarh。...

  • Page 22: Harmonics Display

    4.2.4 Harmonics display pages Harmonics display pages show total harmonic content of voltage and current of each phase. Sub-harmonics are read through communication. The detailed instruction for display pages is shown as follows, Table 4-4 Harmonics display pages Harmonics display Instruction Voltage THD.
  • Page 23 Current THD. I1 THDi=3.01% Current THD. I2 THDi=3.12% Current THD. I3 THDi=3.04% Voltage THD in three phase three wire mode. U12 THDv＝4.15%.

  • Page 24: Demand Value Display

    Voltage THD in three phase three wire mode. U32 THDv＝4.01%. 4.2.5 Demand value display pages Demand display pages show the demand value of three-phase current and power. The detailed instruction for demand display pages is shown as follows, Table 4-5 Demand value display pages Demand value display Instruction Max.

  • Page 25: Extreme Value Display

    Max. demand of I Max. demand of P=3600W Max. demand of Q=2500var Max. demand of S=5700VA 4.2.6 Extreme value display Demand display pages show the maximum and minimum values of phase voltage, line voltage, current, active power, reactive power, apparent power and power factor.

  • Page 26: Tariff Energy Display

    Table 4-6 Extreme value display pages Extreme value display Instruction Maximum value of phase voltage, Max. Un=380.8V. Maximum value of total active power, Max. P=5707W. Minimum value of power factor, Min. PF=0.10. 4.2.7 Tariff energy display pages The meter can measure the energy of four types of tariffs in twelve time zones. The detailed instruction of display pages is shown as follows,...
  • Page 27 Table 4-7 Tariff energy display pages Tariff energy display Instruction Import total active energy EA.T= 19.862kWh Import total active energy of T1 EA.T1= 5.944kWh Import total active energy of T2 EA.T2= 1.425kWh Import total active energy of T3 EA.T3= 10.526kWh...
  • Page 28 Import total active energy of T4 EA.T4= 2.016kWh Total energy of present month E0.T = 3.486kWh Energy of T1 of present month E0.T1 =2.431kWh Energy of T2 of present month E0.T2= 0.000kWh Energy of T3 of present month E0.T3 = 1.435kWh...
  • Page 29 Energy of T4 of present month E0.T4=0.000kWh Total energy of last month E1.T =0.000kWh Energy of T1 of last month E1.T1=0.000kWh Energy of T2 of last month E1.T2=0.000kWh Energy of T3 of last month E1.T3 =0.000kWh...
  • Page 30 Energy of T4 of last month E1.T4=0.000kWh Total energy of the month before last month E2.T=0.190kWh Energy of P1 of the month before last month E2.T1=0.000kWh Energy of T2 of the month before last month E2.T2=0.000kWh Energy of T3 of the month before last month E2.T3=0.190kWh...

  • Page 31: Time Display

    Energy of T4 of the month before last month E2.T4=0.000kWh 4.2.8 Time display Table 4-8 Time display page Time display Instruction The left picture shows 16(year), 05(month), 28(day), 08(hour), 45(minute),37(second) 4.3 Operation instruction for keys on panel Press “ ” for 3s（minimum）and then release it, the display will show “ ”.
  • Page 32 “ ”. If the password is correct, you can enter the programming menu, however, if the display does not change, it means that you have failed to enter programming menu. Please try again. Be careful if the password is changed, and do not forget it, as no programming is allowed if the correct password is not entered.

  • Page 33: Parameter Setting Menu Structure

    1) Saving the edited settings: Press “ ”; 2) Not saving the edited settings: Press “ ” or “ ”, the display will show “ -- ”, and then press “ ”; 3) Staying in the programming mode: Press “ ”.
  • Page 34 Clear NO： not clear demand demand YES： clear demand NO： Clear record not clear record YES： clear record ：three phase three wire Wiring ：three phase four mode wire ：single phase Primary 0～9999 kV voltage Primary voltage Secondary 0～690 V voltage Secondary voltage Signal input Primary...
  • Page 35 Item ： current and power Work mode ： slip mode ： fixed mode Demand Update time 0001～9999 Update time Time zone 0001～9999 Time zone Switch Digital channels ：Spare energy input ： status ～ ： Work mode ： remote control ： alarm Pulse width 0～99.99s...

  • Page 36: System Setting

    Tariffs for different time zones … Select tariff mode for every … Month month tariff Select meter reading time, day 00～31 Meter Day, hour and hour of every month reading Year. month Meter Day. hour 00～99 Set time reading Minute. time second 4.3.2 System setting...

  • Page 37: Signal Input Setting

    4.3.3 Signal input setting To set signal as 10kV/100V and 2000A/5A, set frequency to be 60Hz, the operation process is as follows,...

  • Page 38: Communication Setting

    4.3.4 Communication setting To change communication address to 12, to set baud rate as 9600bps, to select data format as E81, the operation process is as follows,...

  • Page 39: Relay Output Setting

    4.3.5 Relay output setting To set line voltage high alarm output, when line voltage ＞110V, first relay output acts, that is first relay closes, the operation instruction is as follows,...

  • Page 40: Communication

    5. Communication This meter is defaulted to be equipped with one RS485 communication interface with Modbus-RTU protocol. User can add one communication interface via connecting extended module to the meter. As for detailed information, please refer to the communication manual. 6.

  • Page 41: Digital Input

    with PT or CT, relevant pulse data 5000 corresponds to primary side energy data 1kWh×voltage ratio PT × current ratio CT. C. Application example ： the pulse counting device is used for PLC terminal. Supposing during the period with the length of t, the number of collected pulse is N;...
  • Page 42 Table 5-1 Alarm item and unit of relevant alarm threshold value Item Format Instruction Un. H xxx.x V Any phase voltage high alarm Un. L xxx.x V Any phase voltage low alarm Ul . H xxx.x V Any line voltage high alarm Ul .

  • Page 43: Max./Min. Value Demand

    D.IC.L x.xxx A Phase C current present demand low demand D.I. H x.xxx A Current present demand high alarm D.I. L x.xxx A Current present demand low alarm D.P. H xxxx W Total active power present demand high alarm D.P. L xxxx W Total active power present demand low alarm D.Q.

  • Page 44: Event Recording

    6.5 Event recording This device supports event recording function. Reading the information of record and setting relevant parameters only can be realized through communication. Please refer to communication list for detailed instruction. SOE recording include 32 pieces of events which contain activation time of digital input and relay output.

  • Page 45: Measurements About U, I And P Are Incorrect

    It is suggested to download testing software MODSCAN for MODBUS-RTU communication protocol from our homepage. This software adopts standard MODBUS-RTU protocol which can display data in the formats such as integer, float and hexadecimal, so that you can compare the data with measured data displayed on the meter directly.

  • Page 46: Meter Does Not Work

    sequence may lead to wrong running. 7.4 Meter does not work Ensure proper auxiliary supply is connected to the auxiliary supply terminal. As the meter may be damaged by auxiliary supply voltage which is beyond the rated range and it can not recover. Use multi-meter to measure the voltage of auxiliary supply, if the meter does not display when the voltage is proper, please electrify it again, then if the meter can not display normally, please contact with our technical service department.
  • Page 48 The information in this document is subject to change without further notice. Energy Power Save CO., LTD. Add: 442/2 Chan Road, Thungwatdon , Sathon , Bangkok. Thailand :10120 Tel: +66-02-114 7145-9Auto 5Line Mobile :+66(096) 4501250 Email: info@7-mars.com Website: www.7-mars.com...

This manual is also suitable for:

Sfere720b

Table of Contents