Who we are
Our website address is: https://electricalgridmonitoring.com.
<!DOCTYPE html>
<html>
<head>
<title>Voltage Accuracy</title>
<script src="https://d3js.org/d3.v7.min.js"></script>
<style>
@import url('https://fonts.googleapis.com/css2?family=Georgia:wght@400;700&display=swap');
body {
margin: 0;
padding: 0;
background-color: #1E2530;
height: calc(100vh - 50px);
display: flex;
justify-content: center;
align-items: center;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
color: #FFFFFF;
text-align: center;
overflow: hidden;
}
.container {
width: 100%;
max-width: 1200px;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
padding: 0 20px;
}
.header {
max-width: 800px;
margin-bottom: 40px;
}
h1 {
font-size: 64px;
margin: 0 0 20px 0;
font-weight: 700;
line-height: 1.2;
color: rgba(255, 255, 255, 0.95);
letter-spacing: -0.02em;
font-family: 'Georgia', serif;
}
.highlight {
color: #FF6B4A;
display: block;
}
p {
font-size: 24px;
margin: 20px 0 0 0;
color: rgba(255, 255, 255, 0.8);
font-weight: 300;
line-height: 1.4;
}
.gauge-section {
position: relative;
display: flex;
flex-direction: column;
align-items: center;
}
#gauge-container {
width: 400px;
height: 400px;
margin-bottom: -80px;
position: relative;
}
.measurement-info {
text-align: center;
opacity: 0;
transform: translateY(20px);
transition: all 0.8s ease-out;
position: relative;
z-index: 2;
}
.measurement-info.visible {
opacity: 1;
transform: translateY(0);
}
.measurement-info .title {
color: #FF6B4A;
font-size: 20px;
margin-bottom: 5px;
}
.measurement-info .subtitle {
color: rgba(255, 255, 255, 0.8);
font-size: 16px;
margin-bottom: 15px;
}
.specs {
text-align: center;
color: rgba(255, 255, 255, 0.8);
font-size: 16px;
line-height: 1.8;
opacity: 0;
transform: translateY(20px);
transition: all 0.8s ease-out;
position: relative;
z-index: 2;
}
.specs.visible {
opacity: 1;
transform: translateY(0);
}
</style>
</head>
<body>
<div class="container">
<div class="header">
<h1>Industry-Leading<br><span class="highlight">Voltage Accuracy</span></h1>
<p>The Only Solution That Delivers Precise Voltage Measurements<br>Without Ground Reference</p>
</div>
<div class="gauge-section">
<div id="gauge-container"></div>
<div class="measurement-info">
<div class="title">Ground-Free Voltage Measurement</div>
<div class="subtitle">Full Coverage: 4kV to 240kV</div>
</div>
<div class="specs">
Current Accuracy: ±0.1%<br>
Power/Energy: ±5%<br>
Phase Angle: ±1°
</div>
</div>
</div>
<script>
class AccuracyGauge {
constructor(selector) {
this.selector = selector;
this.width = 400;
this.height = 400;
this.radius = 160;
this.initialized = false;
this.currentValue = 1;
this.minValue = 1;
this.maxValue = 3;
this.oscillationAngle = 0;
}
initialize() {
const container = d3.select(this.selector);
container.selectAll('*').remove();
const svg = container.append('svg')
.attr('width', this.width)
.attr('height', this.height)
.append('g')
.attr('transform', `translate(${this.width/2}, ${this.height/2})`);
// Create gradient
const gradient = svg.append('defs')
.append('linearGradient')
.attr('id', 'gaugeGradient')
.attr('x1', '0%')
.attr('y1', '0%')
.attr('x2', '100%')
.attr('y2', '0%');
gradient.append('stop')
.attr('offset', '0%')
.attr('stop-color', '#FF6B4A');
gradient.append('stop')
.attr('offset', '100%')
.attr('stop-color', '#FF8F6B');
// Background arc
const backgroundArc = d3.arc()
.innerRadius(this.radius - 40)
.outerRadius(this.radius)
.startAngle(-Math.PI / 2)
.endAngle(Math.PI / 2);
svg.append('path')
.attr('d', backgroundArc)
.style('fill', 'rgba(255, 255, 255, 0.1)');
// Main arc
this.foreground = svg.append('path')
.style('fill', 'url(#gaugeGradient)');
// Value display - centered with more spacing
const valueGroup = svg.append('g')
.attr('transform', 'translate(0, 0)');
// ± symbol - moved even further left
valueGroup.append('text')
.attr('class', 'gauge-symbol')
.attr('x', -65)
.attr('y', 0)
.attr('text-anchor', 'middle')
.attr('dominant-baseline', 'middle')
.style('fill', '#FF6B4A')
.style('font-size', '52px')
.style('font-weight', 'bold')
.text('±');
// Value - centered
this.valueText = valueGroup.append('text')
.attr('class', 'gauge-value')
.attr('x', 0)
.attr('y', 0)
.attr('text-anchor', 'middle')
.attr('dominant-baseline', 'middle')
.style('fill', '#FFFFFF')
.style('font-size', '52px')
.style('font-weight', 'bold');
// % symbol - moved even further right
valueGroup.append('text')
.attr('class', 'gauge-percent')
.attr('x', 65)
.attr('y', 0)
.attr('text-anchor', 'middle')
.attr('dominant-baseline', 'middle')
.style('fill', '#FFFFFF')
.style('font-size', '52px')
.style('font-weight', 'bold')
.text('%');
this.initialized = true;
this.startAnimation();
setTimeout(() => {
document.querySelector('.measurement-info').classList.add('visible');
}, 800);
setTimeout(() => {
document.querySelector('.specs').classList.add('visible');
}, 1600);
}
startAnimation() {
const animate = () => {
this.oscillationAngle += 0.02;
const range = this.maxValue - this.minValue;
this.currentValue = this.minValue + (Math.sin(this.oscillationAngle) + 1) * range / 2;
const angle = (((this.currentValue - this.minValue) / (this.maxValue - this.minValue)) * Math.PI) - (Math.PI / 2);
const arc = d3.arc()
.innerRadius(this.radius - 40)
.outerRadius(this.radius)
.startAngle(-Math.PI / 2)
.endAngle(angle);
this.foreground.attr('d', arc);
this.valueText.text(this.currentValue.toFixed(1));
if (this.initialized) {
requestAnimationFrame(animate);
}
};
animate();
}
}
document.addEventListener('DOMContentLoaded', () => {
const gauge = new AccuracyGauge('#gauge-container');
gauge.initialize();
});
</script>
</body>
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