Glacier Watthour Meter

Two Wire, 208-240 Volts Line to Line

The Glacier meter is normally used to measure the power consumed by an appliance or piece of equipment, either 240 volts single phase or two legs of a 208 volt, three phase system where a neutral is not present. Do not use this meter if any part of the load uses 120 volts to neutral; use the Yosemite meter instead. The Glacier meter consists of an electronics module, one current transformer (CT) and an electro-mechanical counter that displays the accumulated power used. An enclosure is optional.

Available Configurations
The Glacier meters are available in a variety of configurations. Check the options in the Part Numbering Guide at the bottom of this page for details.

Current Capabilities
Meters are rated by the maximum current that can flow through the current transformers. Generally speaking, the meter should be rated at or above the rating of the breaker that will protect the circuit to be measured. Meters using solid-core CTs are available in 20, 100 and 200 amp versions. Meters using split-core CTs are available in 200, 500, 750, 1000 and 1500 amp versions.

Resolution
Glacier meters normally come with a resolution of 1.0 kilowatt hours (KWH). They may also be ordered with a resolution of 0.1 KWH or 0.01 KWH.

Automatic Meter Reading (AMR)
In addition to stand-alone meters that must be manually read, the meter is available with the following AMR options.

50ms Pulse - An optically isolated output that closes for 50ms then opens every time the counter advances. These meters are frequently used with radio data collection systems in apartment buildings.

Dedicated Twisted Pair - A local meter network that communicates over a twisted pair of wires. Any number of meters can be connected to an RS-232 interface. The RS-232 interface can be connected directly to a Windows compatible computer, to a telephone modem, or to a TCP/IP interface module. You can use the free Microsoft Access application to read the meters or write your own custom application. See the documentation section for more info.

Power Line Carrier - This system is the same as the Dedicated Twisted Pair except that communication is via the power line instead of separate wires. Because of interference from nearby ground fault interrupters and switching power supplies, this system works best in marinas.

Enclosures
The Glacier meter is available in a variety of enclosures, either for a single meter or multiple meters. See the enclosures page for more info.

OEM Versions
The Glacier meter is also available in an OEM version so that it can be installed in a third party NEMA enclosure. This is usefull when the meters are to be installed in power pedestals in a marina or RV park. A stainless steel mounting plate is available for mounting the display counters in the enclosure.

Accuracy and Safety Certifications
Davidge Controls certifies that all our watthour meters meet or exceed the accuracy standards of ANSI C12.1(2001), the national standard for watthour meters that applies to all the utility companies in the country.

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2411 Meter

Solid-Core CT

Small Split-Core CT

Large Split-Core CT

Sealed Counter

Unsealed Counter

Glacier Electronics Module Specifications

Voltage Requirements: 90-140 VAC Line to Neutral, 180-280 VAC Line to Line Physical Size: 5.0" x 2.78" x 0.91"

Frequency: 50-60 Hz Weight: 4.0 oz stand-alone, 4.3 oz Plus models

Power Consumption: less than 2 watts for stand-alone meters
less than 3 watts for Plus and Plus IO models Operating Temp:
Note: -20°F to 160°F (-28.8°C to 71.1°C)
Display counter range is smaller. See below.

Phase: Single phase Storage Temp: -40°F to 160°F (-40°C to 71.1°C)

Elements: One Humidity: Non-Condensing

Solid-Core Current Transformer Specifications

Model 4720/4

Outside Diameter: 2.1" Turns Ratio: 400:1

Inside Diameter: 0.9" Burden Resistor: None - on circuit board

Weight 2.5 oz. Leads: 24";, 18 ga., 300V insulation

Split-Core Current Transformer Specifications

Model 4735/1

Outside dimension: 3.3" x 2.2" Turns Ratio: 3000:1

Inside Dimemension: Burden resistor None - on circuit board

Weight: 12.4 oz. Leads: 68", 18 ga, 600V insulation

Model 4735/2

Outside dimension: 4.5" x 4.2" Turns Ratio: 3000:1

Inside Dimemension: Burden resistor None - on circuit board

Weight: 22.2 oz. Leads: 68", 18 ga, 600V insulation

Electro-Mechanical Display Specifications

Sealed Counters

Counter model: Kubler K46.20/K47.20 Panel Cutout: 1.06" x 0.55"

Operating Temp: 14°F (-10°C) - 140°F (60°C) Reset: None

Max dist from meter: 20 ft. for 12V counters
300 ft for 6V counters Digits: 6 for 1.0 kwh and 0.1 kwh resolution
7 for 0.01 kwh resolution

Wires to counters must be installed in conduit Digits for units are white, digits for tenths and hundredths are red

Glacier Part Numbering Guide

2 X 1 Y / Z

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Z Part Number Suffix - Add values of desired features

0 Solid Core CTs, 0.1 kwh resolution

1 50 ms pulse output when "X" =

1 Twisted Pair Interrface for Plus IO meters

2 KYZ pulse output when "X" =

2 3 multi-purpose IO ports for Plus IO meters

4 Designates bi-directional Everglades Meter

8 1.0 kwh resolution

16 Not used with this meter

32 0.01 kwh resolution

64 Split-core CTs

128 1 wh resolution available

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Y

0 200 amp max

1 100 amp max

3 20 amp max

5 500 amp max

6 1500 amp max

7 750 amp max

8 1000 amp max

| | 1 One Counter Driver

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X

4 Single-Element, Stand-Alone Meter

5 Single-Element, Computer-Readable Meter (Plus or Plus IO)

2 Two Wire, 208-240 Volts Line to Line

Example: 2411 means a Glacier meter, Two Wire, 208-240 Volts Line to Line, single-element, stand-alone, one counter driver, 100 amps maximum, 0.1 kwh resolution, solid-core CT (Glacier 100)