參數資料
| 型號： | 19219 |
| 廠商： | Desco |
| 文件頁數： | 1/3頁 |
| 文件大小： | 0K |
| 描述： | MONITOR GROUND HUB US |
| 標準包裝： | 1 |
| 類型： | 工作站監視器 |
| 使用： | 工作面，腕帶監視 |
| 特點： | 連續監視，NIST 可追溯，單芯系統 |
| 電源類型： | 120VAC |
| 包括： | 證書，硬件 |
| 其它名稱： | 16-1162 |
DESCO WEST
- 3651 Walnut Avenue, Chino, CA 91710 (909) 627-8178 Fax (909) 627-7449
DESCO EAST
- One Colgate Way, Canton, MA 02021-1407 (781) 821-8370 Fax (781) 575-0172 Website: Desco.com
TB-3049 Page 1 of 3
2011 DESCO INDUSTRIES, INC.
Employee Owned
Ground Hub Continuous Monitor
Operation, Installation and Maintenance
Description
The Desco Ground Hub Continuous Monitor confirms the
integrity of the resistance path from the common ground
point to electrical ground. It is designed in accordance
with ESD TR 12-01 to “monitoring equipment ground
connections.”
When the Ground Hub Continuous Monitor is plugged into
an AC outlet, the green LED illuminates when both the
outlet’s wiring is correct and the path to equipment ground
via the equipment grounding conductor is intact. The monitor
provides 12 verified ground points when in PASS condition.
The red LED illuminates when either the outlet’s wiring is
incorrect or the path to equipment ground is defective.
The outlet ground line is tested by measuring voltage
between it and the neutral line. It is normal to have a few
volts of AC induced on the neutral line. If the Ground Hub
Continuous Monitor measures only a few volts, the ground
line to neutral impedance is low and the ground line would
make a suitable ESD ground point. If the monitor measures
TECHNICAL BULLETIN TB-3049
August 2011
Figure 1. Desco 19219 Ground Hub Continuous Monitor
Made in America
more than just a few volts between ground and neutral, this
indicates either that they are not referenced to each other or
that the outlet and associated wiring should be checked for
loose connections. In this case, the Ground Hub Continuous
Monitor will sound a warning alarm and display a red FAIL
indication and should not be used for an ESD grounding
point until corrected.
Use the Ground Hub Continuous Monitor to fulfill the ANSI/
ESD S6.1 section 6.3.1 requirement. “The hot, neutral and
equipment grounding conductor shall be verified to be in the
proper wiring orientation in accordance with the National
Electric Code (ANSIINFPA-70).”
The Ground Hub Continuous Monitor is available in the
following models:
Figure 2. Desco 19224 Ground Hub Continuous Monitor
Item
Voltage
Plug
19219 120VAC N. America
19224 220VAC Asia / UK
Neutral
Load / Hot
Ground
Ground Hub
Outlet Status
FRONT VIEW
BACK VIEW
Figure 3. Desco 19219 Ground Hub Continuous Monitor
features and components
Packaging
1 Ground Hub Monitor
6 10-32 x 1/4" Screws
6 #10 Split Washers
1 Certificate of Calibration
Features and Components
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| 19228 | MONITOR CONT MULTI-MOUNT |
| 19230 | MONITOR DUAL WORKSTATION 120V |
| 19232 | MONITOR W/SPLIT REMOTE MOD 120V |
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