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WZJ-11 series micro-process based DC insulation monitor is applied to monitor the insulation status of DC busbars and feeding loops automatically. Meanwhile it processes the measured data and communicates with DC collective monitor so as to make sure the reliable running of the whole DC system. This device can be applied to various complex DC systems in various power plants and hydropower stations.

Technical data

1. ambient temperature：－5―― +50℃
2. relative humidity： <90%
3. atmospheric pressure：80――107Kpa
4. DC voltage gauge：220V，110V
5. working voltage range：180V――276V，90V――150V
6. measuring precision of busbar voltage：<1%
7. measuring range of busbar：0 ―― 300V
8. measuring precision of the resistance between busbar and earth(0 ―― 50K)： <10%
9. measuring range of the resistance to earth:  0 ―― 999.9KΩ
10. measuring precision of the resistance of feeding loop earthing： <10%
11. number of monitored busbars：one or two
12. number of monitored feeding loops：<120
13. communication protocol：X.J. protocol
14. contacts capacity of relay: 5A/250Vac(COSΦ=1)；3A/250Vac(COSΦ=O.4)；5A/30Vdc(T=0)；0.5A/220Vdc(T=0)。
15. power: ≤50W
16. communication port: RS485，
17. baud rate: for selection:1200bps , 2400bps , 4800bps , 9600bps

I. DC System products:

1. PZ61 Series High-Frequency Switching DC Supply System

(KCVA,PZ23, WCF and PZ32 went out of production for long time since some parts are not available, so it is s ested to upgrade the DC system for the following models with our PZ61-2000:

• KCVA21 thyristor-Controlled Rectifier
• PZ23 Cd-Ni battery DC power supply system
• WCF10 Micro-processor based thyristor-Controlled Rectifier Panel
• PZ32 Lead-Acid Battery DC Power Panel    

1.2 PBD Uninterrupted Power Supply Panel

PBD-2 Backup type; PBD-3 on-line type

1.3 PTD11 DC Supply System for Communication

1.4 PYD10 Integrated DC and AC Power Supply System

1.5 PJD10 Intelligent AC Power Supply Panel

II. Parts and Components:

2.1. High-Frequency Switching Rectifier

ZZG12High-Frequency Switching Rectifier

ZZG13High-Frequency Switching Rectifier

ZZG21High-Frequency Switching Rectifier

ZZG22 High-Frequency Switching Rectifier

ZZG31High-Frequency Switching Rectifier:

ZZG31-10220; ZZG31-20110; ZZG31-10110 (net weight: about 4kg)

ZZG32High-Frequency Switching Rectifier

2.2 Supervisor:

WZCK-11 Microprocessor based D.C. System Monitor Device

WZCK-12 DC System Collective Monitor Module

WZCK-12 DC System Monitor (Monitoring Device)

(WZCK-12W not produced, replaced by WZCK-12A or WZCK-12AW)

WZCK-20 Microcomputer-based DC Monitoring Device

(WZCK-21; WZCK-23; WZCK-24ADC monitoring device)

2.3 Signal Collection Unit

FKR-21 On-off Signal Collection Unit (module)

2.4 Battery Voltage Inspection

FXJ-21 Cell Voltage Inspection Module

FXJ-22 Cell Internal Resistance Inspection Unit

2.5 Charging Controller

FXL-12/FXL-11 Charging Controller (Module)

2.6 Intelligent Transmitter Module

FZB 11 DC voltage transmitter;

FZB 12 DC transmitter

FZB 13 three-phase AC voltage transmitter

FZB 14 single-phase AC voltage transmitter

FZB 15 AC transmitter

FZB 16 temperature transmitter

2.7 Insulation Monitoring Device

FZJ-11 DC Insulation Monitoring Device

FZJ-21 DC Insulation Monitoring Device (for DC busbar)

WZJ-21 DC Insulation Monitoring Device (for DC busbar and branch circuit)

FCT-21 Current Transmitter

WZJ-11A Microprocessor Based DC Insulation Monitor

WZJ-21 Microprocessor Based DC Insulation Monitor

WZJ-31A Digital DC Insulation Monitoring Device

2.8 Battery Detect Device

WXJ-10 Series Micro-Processor Based Battery Monitor (Net Weight: about 5kg)

WXJ-11B Micro-Processor Based Battery Monitor

WXJ-15 Storage Battery Monitoring Equipment (battery Detect Device)

WXJ-16 Battery Monitoring Device

2.9 DC-DC Converter

ZBG11 DC-DC Converter (net weight: 9kg)

ZBG11-10/48; ZBG11-20/48; ZBG11-20/24; ZBG11-30/48; ZBG11-30/24

ZBG13 DC-DC Converter

ZBG31 DCDC Converter (net weight: 3.5 kg)

ZBG31-5048/220; ZBG31-3048/220; ZBG31-3048/220; ZBG31-2048/220; ZBG31-2048/220; ZBG31-3048/110; ZBG31-3048/110; ZBG31-2048/110; ZBG31-2048/110;

2.10 DC/AC Inverter

ZNB15

ZNB21

ZNB23D Series DC/AC Inverter

ZNB23D-1/220v, ZNB23D-2/220, ZNB23D-3/220, ZNB23D-1/110 V and ZNB23D-2/110 V

2.11 Battery Discharge Device

ZFD-1 Battery Discharge Device

2.12 Instruments

DVM05 voltmeter (LED display)

DAM05 Ammeter (LED display)

2.13 ZTY Automatic Voltage Regulating Device