Hóa chất GEM

Ground Enhancement Material (GEM) is a superior conductive material that solves your toughest grounding problems. It is the ideal
material to use in areas of poor conductivity, such as rocky ground, mountain tops and sandy soil. GEM dramatically reduces earth
resistance and impedance measurements. Furthermore, GEM may reduce the size of the grounding system where conventional
methods are unsatisfactory. Once installed, GEM is maintenance-free, not requiring periodic charging or the presence of water
to maintain its conductivity. Third-party testing has been completed to verify that GEM conforms to IEC® 62561-7. This standard
introduces a benchmark for electrical performance and corrosion of earth enhancement materials that has been absent from the
industry to date. nVent ERICO offers GEM Calculator software that provides resistivity values for common GEM applications and can
help estimate the amount of GEM required for an installation. It operates in four languages - English, Spanish, French and German
- and performs calculations in Imperial or Metric units. The GEM Calculator is available for download on our website at erico.com.

Mã sản phẩmGEM

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Thông tin sản phẩm

• Maintains constant resistance for the life of the system once in its set form
• Performs in all soil conditions even during dry spells
• Does not require periodic charging treatments or placement
• Does not require the continuous presence of water to maintain its conductivity
• Fully sets within 3 days, fully cures within 28 days
• Does not dissolve, decompose, or leach out with time
• Non-corrosive
• Reduces vandalism and theft since conductors are hard to remove from concrete
• Easy-to-handle 25 lb (11.3kg) bags or buckets
• Requires only one person to install
• Exceeds IEC® 62561-7 which sets the benchmark for corrosion, leaching, sulfur content, and other environmental regulations
• Complies to the U.S. Environmental Protection Agency (EPA) Toxicity Characteristic Leaching Procedure (TCLP), EPA test
method 1311
• Can be installed using trench or ground rod backfill methods

Part Number	GEM25A
Article Number	163670
Unit Weight	11,36 kg
Packaging	Bag with handles
Complies With	IEC® 62561-7
Certifications	Qualifoudre
Standard Packaging Quantity	1 pc
UPC	78285632296
EAN-13	8711893001389

Suggested Specifications
Parameter	Recommended Values	Test Method
Standards Compliance	Full compliance to IEC 62561-7 EPA Toxicity Characteristic Leaching Procedure (TCLP), test method 1311
Leaching	Arsenic < 1.5 mg/L, Barium < 60 mg/L, Cadmium < 0.15 mg/L, Chromium < 3.0 mg/L, Lead < 1.5 mg/L, Mercury < 0.06 mg

Suggested Specifications
Elenium < 1.0 mg/L
Sulfur Content	< 2%	ISO 14869-1
Resistivity	<2 Ω-cm for powder <20 Ω-cm for mixed and cured material	Compressed powder according to ASTM G187-12 Mixed and cured per ASTM D991-89
Corrosion Performance	For copper-plated earth electrodes, the polarization resistance shall be > 8 Ω x m2 for aggressive environments For galvanized earth electrodes, the polarization resistance shall be > 7.6Ω x m2 for aggressive environments	IEC 62561-7, Sec 5.5, aggressive environment
Flexural Strength	300-450 psi [2070-3100 kPa]	ASTM C293
Compressive Strength	100-200 psi [690-1390 kPa] after 672 hours curing time	ASTM C109

Estimated Linear Feet of Ground Conductor Covering with Each Bag of GEM
Total Thickness of GEM	Trench Width
in	cm	in	cm	in	cm
Inches	Centimeters	4	10.2	5	12.7	6	15.2
4	10	3.5	1.0m	2.8	0.8m	2.3	0.7m
6	15.2	9.3	0.7m	1.8	0.5m	1.5	0.4m
8	20.3	7	0.5m	1.4	0.4m	1.1	0.3m
10	25.4	5.6	0.4m	1.1	0.3m	0.9	0.3m
12	30.5	4.7	0.3m	0.9	0.3m	0.7	0.2m

Estimated Bags of GEM for Backfilling Around Ground Rods to a Density of 63.5 lb/ft ³ (1,017 kg/m³)
Diameter of Hole	ft	m	ft	m	ft	m	ft	m	ft	m	ft	m
Inches	Centimeters	5	1.5	6	1.8	8	2.4	10	3	15	4.6	20	6.1
4	10.2	2	2	2	3	4	5
6	15.2	3	3	4	5	8	10
8	20.3	5	6	8	9	14	18
10	25.4	7	9	12	14	21	28
12	30.5	10	12	16	20	30	40

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