Yokogawa Clamp-On Power Meter, CW120
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CW120 Clamp-On Power Meter

Brand: Yokogawa Electric Corporation
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Specifications
  • Compact & lightweight body with large back-lit LCD
  • Current clamps in a range of sizes(small to large diameter)
  • Support for large-capacity ATA flash memory (equipped with PC card slot)
  • Data can be saved at from 1 second
  • Wiring error check function
  • 2 or 3-load system
  • Simultaneous measurement of multiple use possible by external control terminal
  • Parameters setting tool is included to set measurement conditions through PC

Specifications

Brand

Accuracy

  • ± (0.3 % of Reading + 0.2 % RNG) - Voltage
  • ± (0.8 % of Reading + 0.4 % RNG) when Using Clamps 96030, 96031, & 96033 - Current/Active Power
  • ± (1.2 % of Reading + 0.8 % RNG) when Using Clamp 96032 - Current/Active Power

Approvals & Certifications

  • CE
  • EMC: EN 61326, EN 55011, EN 61326, EN 61000-3-2, EN 61000-3-3, EN 61010-1, EN 61010-2-031, Group 1, Class A
  • UL 3111-1 First Edition

Communication

  • Baud Rate: 1,200, 2,400, 4,800, 9,600, 19,200, 38,400 bit/sec
  • Modbus Communication Protocol (ASCII/RTU)
  • PC-Link Communication Protocol
  • Power Monitor Communication Protocol
  • Proprietary Communication Protocol
  • RS-232
  • RS-485

Consumption

  • 8 VA, Max.

Current

  • 1,000 Arms: 96032 Clamp - Max.
  • 130 Arms: 96033 Clamp - Max.
  • 200-1,000 A: 96032 Clamp - Rated Value
  • 20-200 A: 96030 Clamp - Rated Value
  • 250 Arms: 96030 Clamp - Max.
  • 50-500 A: 96031 Clamp - Rated Value
  • 5-50 A: 96033 Clamp - Rated Value
  • 625 Arms: 96031 Clamp - Max.

Display

  • 4-Digits - Other Parameters
  • 6-Digits - Electric Energy
  • Segmented LCD Display
  • Segmented LCD with Backlight

Electrical Connectors

  • 2-Pin: AC Power Supply
  • RS-232: Mini DIN 8-Pin

Frequency

  • 45 to 65 Hz

Humidity

  • 5 to 85 % Relative Humidity, Non-Condensing
  • 90 % Relative Humidity, Non-Condensing - Storage Temperature

Insulation Resistance

  • 50 Megawatts at 500 Vdc

Interface Connection

  • RS-232
  • RS-485

Maximum Voltage

  • 495 Vrms

Output

  • TTL Level

Power Requirement

  • ± 100 ppm - Typical Precision
  • 100-240 Vac ± 10 %, 50/60 Hz

Power Supply

  • 100-240 Vac, Supply the Power from Input

Resistance

  • Approximately 1.5 megaohms for Voltage - Input Resistance
  • Approximately 100 kiloohms for Current - Input Resistance

Resolution

  • 12-bit

RFI/EMI Effect

  • 400 A/m - External Magnetic Field Effects

Storage Temperature

  • -10° to 60° C (14° to 140° F)

Supply Voltage

  • 2,300 Vac for 1 Minute between Powerline & Case, Power Line & Current Input Terminals, Communication Terminals, & Control I/O Terminals
  • 3,320 Vac for 1 Minute between Voltage & Current Input Terminals, Communication Terminals, & Control I/O Terminals
  • 5,550 Vac for 1 Minute between Voltage Input Terminals & Case
  • Up to 495 V - Voltage Measurements

Temperature Effect

  • ± 0.05 % Rng/°C - Temperature Coefficient
  • ± 0.07 % Rng/°C - Temperature Coefficient

Temperature Range

  • 0° to 40° C (32° to 104° F) - Usage Temperature
  • 0° to 50° C (32° to 122° F)

Update Time

  • Approximately 1 second

Wiring

  • Single-Phase 2-Wire
  • Single-Phase 3-Wire
  • Three-Phase 3-Wire

Documentation

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