DM Technologies

Cable Resistance Calculator

thedmtechnologies — Tue, 23 Jul 2024 06:02:10 +0000

Cable Resistance Calculator

Calculator
July 23, 2024

Input Data and Measurement

Resistivity (\(\rho\)): This is a property of the material from which the cable is made. It measures how strongly the material resists electrical current. Resistivity is typically provided by the manufacturer of the cable and is measured in ohm-meters (Ω·m).

Length (L): This is the total length of the cable through which the current flows. Measure it in meters (m) using a tape measure or ruler.

Diameter (d): This is the thickness of the cable. Measure the diameter of the cable with a caliper or micrometer in meters (m). If you measure the circumference, you can calculate the diameter by dividing the circumference by π (approximately 3.14159).

Formula

The resistance (\(R\)) of a cable can be calculated using the following formula:

Resistance (R) = \(\frac{\rho \times L}{A}\)

Where:

\(\rho\) is the resistivity of the cable material (in ohm-meters, Ω·m).
L is the length of the cable (in meters, m).
A is the cross-sectional area of the cable (in square meters, m²).

The cross-sectional area (\(A\)) of a cylindrical cable can be calculated as:

A = π × (r²)

Where:

r is the radius of the cable (in meters, m), which is half of the diameter.

Calculated Resistance

Comprehensive Electrical System Losses Analysis

thedmtechnologies — Tue, 23 Jul 2024 05:50:36 +0000

Comprehensive Electrical System Losses Analysis

Calculator
July 23, 2024

Electrical System Losses Report

Input Data

Transmission Power (MW):

Measure the power transmitted through the transmission line.

Transmission Distance (km):

Measure the length of the transmission line from the source to the destination.

Transmission Resistance (Ω/km):

Obtain the resistance per kilometer of the transmission line.

Transmission Voltage (kV):

Measure the voltage level at which power is transmitted.

Distribution Power (MW):

Measure the power distributed through the distribution network.

Distribution Distance (km):

Measure the length of the distribution line from the substation to the load.

Distribution Resistance (Ω/km):

Obtain the resistance per kilometer of the distribution line.

Distribution Voltage (kV):

Measure the voltage level at which power is distributed.

Old Transformer Efficiency (%):

Check the efficiency rating of the existing transformer.

New Transformer Efficiency (%):

Check the efficiency rating of the new transformer.

Generator Power (MW):

Measure the power output of the generator.

Combined Cycle Efficiency (%):

Obtain the efficiency of the combined cycle power plant.

Mechanical Losses Old (%):

Measure or estimate the mechanical losses of the old system.

Mechanical Losses New (%):

Measure or estimate the mechanical losses of the new system.

Old Power Factor:

Measure the power factor of the old system.

New Power Factor:

Measure the power factor of the new system.

Old Harmonic Losses (%):

Measure the harmonic losses of the old system.

New Harmonic Losses (%):

Measure the harmonic losses of the new system.

Factory Utility System Design

thedmtechnologies — Tue, 23 Jul 2024 05:36:09 +0000

Factory Utility System Design

Introduction

This document outlines the utility system design for a factory with an annual production volume of 200,000 units and 1,000 employees. The design includes calculations for air compressors, diesel generators, effluent treatment plants (ETP), sewage treatment plants (STP), water treatment plants (WTP), and HVAC systems.

Calculator
July 23, 2024

Utility System Design

Annual Production Volume (units/year):

Number of Employees:

Number of Machines:

KVA per Machine:

m³ per Machine per Hour:

Diesel Generator Usage Hours per Day:

Power Line Voltage (kVA):

Cost per kWh (INR):

Fixed Charge (INR/month):

Demand Charge (INR/kW):

Results:

Air Compressor System:

Total m³/hr Required:

Daily m³/hr Required:

Hourly m³/hr Required:

Power Required: kW

Cost per Day: INR

Total m³/hr Required = Annual production volume × m³/hr per unit Daily m³/hr Required = Total m³/hr Required ÷ Operational days Hourly m³/hr Required = Daily m³/hr Required ÷ Operational hours/day Power (kW) = (Hourly m³/hr × Pressure) ÷ Conversion Factor Power Usage (kWh per Shift) = Power (kW) × Operational hours × Conversion Factor

Diesel Generator (DG) System:

Total Load: kW

Fuel Consumption: L/hr

Power Usage per Day: kWh

Cost per Day: INR

Total Load (kW) = Number of Machines × KVA per Machine Fuel Consumption (L/hr) = (Total Load × Fuel consumption rate) ÷ Efficiency Power Usage (kWh per Day) = Total Load × Usage hours/day Cost (Daily) = Fuel Consumption (L/hr) × Fuel cost × Usage hours/day

Effluent Treatment Plant (ETP):

Chemical Dose per Day: kg

Cost per Day: INR

Chemical Dose (kg/day) = (Chemical dosing requirement × Effluent volume) ÷ Conversion factor Cost (Daily) = Chemical Dose (kg/day) × Chemical cost

Sewage Treatment Plant (STP):

Sewage Flow: m³/day

BOD Load: kg/day

Cost per Day: INR

Sewage Flow (m³/day) = Number of employees × Sewage per employee BOD Load (kg/day) = (BOD concentration × Sewage volume) ÷ Conversion factor Cost (Daily) = (Sewage Flow × BOD Load) × Treatment cost

Water Treatment Plant (WTP):

Total Water Demand: m³/day

Chemical Dose per Day: kg

Cost per Day: INR

Total Water Demand (m³/day) = Number of employees × Water per employee Chemical Dose (kg/day) = (Chemical dosing requirement × Water demand) ÷ Conversion factor Cost (Daily) = Chemical Dose (kg/day) × Chemical cost

HVAC System:

Heat Load: kW

Cost per Day: INR

Heat Load (kW) = Volume (m³) × Temperature difference (°C) × Air exchange rate (m³/hr) × Specific heat of air (kJ/kg°C) ÷ Time factor

Cost (Daily) = Heat Load × Cost per kWh × Operational hours/day

Power Line Capacity:

Power Line Voltage: kVA

Required Capacity: kW

Power Line Capacity (kVA) = Total Load ÷ Power factor Required Capacity (kW) = Total Load

TNEB Bill Calculation:

Demand Charge = ₹ Fixed Charge = ₹ Energy Cost = ₹ Total Monthly Bill = ₹

Electrical Manitenance calculation

thedmtechnologies — Sat, 20 Jul 2024 05:10:09 +0000

Electrical Manitenance calculation

Calculator
July 20, 2024

Electrical Circuit Maintenance

Select Maintenance Task:

Resistance Calculation

Formula for Resistance (Ohm's Law):

R = V / I

Where:

R = Resistance (ohms)
V = Voltage (volts)
I = Current (amperes)

Example Calculation:

If the voltage (V) is 12 volts and the current (I) is 2 amperes:

R = 12V / 2A = 6 ohms

Calculate:

Voltage (V):
Current (I):

Result: N/A ohms

Current Calculation

Formula for Current (Ohm's Law):

I = V / R

Where:

I = Current (amperes)
V = Voltage (volts)
R = Resistance (ohms)

Example Calculation:

If the voltage (V) is 24 volts and the resistance (R) is 8 ohms:

I = 24V / 8 ohms = 3 amperes

Calculate:

Voltage (V):
Resistance (R):

Result: N/A amperes

Power Calculation

Formula for Power (P):

P = V * I

Where:

P = Power (watts)
V = Voltage (volts)
I = Current (amperes)

Example Calculation:

If the voltage (V) is 230 volts and the current (I) is 10 amperes:

P = 230V * 10A = 2300 watts

Calculate:

Voltage (V):
Current (I):

Result: N/A watts

Horsepower Calculation

Formula for Horsepower (HP):

HP = (V * I * η) / 746

Where:

HP = Horsepower
V = Voltage (volts)
I = Current (amperes)
η = Efficiency (decimal)

Example Calculation:

If the voltage (V) is 220 volts, the current (I) is 15 amperes, and the efficiency (η) is 0.9:

HP = (220V * 15A * 0.9) / 746 = 3.98 HP

Calculate:

Voltage (V):
Current (I):
Efficiency (η):

Result: N/A HP

Kilowatt Calculation

Formula for Kilowatt (kW):

kW = (V * I * η) / 1000

Where:

kW = Kilowatt
V = Voltage (volts)
I = Current (amperes)
η = Efficiency (decimal)

Example Calculation:

If the voltage (V) is 230 volts, the current (I) is 10 amperes, and the efficiency (η) is 0.85:

kW = (230V * 10A * 0.85) / 1000 = 1.955 kW

Calculate:

Voltage (V):
Current (I):
Efficiency (η):

Result: N/A kW

Kilovolt-Ampere Calculation

Formula for Kilovolt-Ampere (kVA):

kVA = (V * I) / 1000

Where:

kVA = Kilovolt-Ampere
V = Voltage (volts)
I = Current (amperes)

Example Calculation:

If the voltage (V) is 480 volts and the current (I) is 30 amperes:

kVA = (480V * 30A) / 1000 = 14.4 kVA

Calculate:

Voltage (V):
Current (I):

Result: N/A kVA

Motor Poles Calculation

Formula for Motor Poles:

P = 120 * f / N

Where:

P = Number of Poles
f = Frequency (Hz)
N = Speed (RPM)

Example Calculation:

If the frequency (f) is 60 Hz and the speed (N) is 1800 RPM:

P = 120 * 60 / 1800 = 4 poles

Calculate:

Frequency (Hz):
Speed (RPM):

Result: N/A poles

5 Why Analysis with Action Plan

thedmtechnologies — Sat, 20 Jul 2024 05:06:26 +0000

5 Why Analysis with Action Plan

Calculator
July 20, 2024

Analysis Tool

Why-Why Analysis Input

Problem Statement:

Reasons (Separate each reason by a newline):

Why-Why Analysis Output

5 Whys Analysis Input

Problem Statement:

Why 1:

Answer 1:

Why 2:

Answer 2:

Why 3:

Answer 3:

Why 4:

Answer 4:

Why 5:

Answer 5:

5 Whys Analysis Output

Fishbone Diagram Input

Problem Statement:

Category 1 (e.g., People):

Category 2 (e.g., Machines):

Category 3 (e.g., Methods):

Category 4 (e.g., Materials):

Fishbone Diagram Output

Generate Final Report

EV Battery Maintenance

thedmtechnologies — Sat, 20 Jul 2024 05:04:30 +0000

EV Battery Maintenance

Calculator
July 20, 2024

EV Battery Maintenance

Select Maintenance Task:

State of Charge (SoC)

Formula for SoC:

SoC (%) = (Current Capacity (Ah) / Total Capacity (Ah)) * 100

Example Calculation:

If the current capacity is 50 Ah and the total capacity is 100 Ah:

SoC (%) = (50 / 100) * 100 = 50%

Calculate:

Current Capacity (Ah):
Total Capacity (Ah):

Result: N/A %

Depth of Discharge (DoD)

Formula for DoD:

DoD (%) = 100 - SoC (%)

Example Calculation:

If the SoC is 30%:

DoD (%) = 100 - 30 = 70%

Calculate:

State of Charge (SoC) (%):

Result: N/A %

Battery Capacity

Formula for Battery Capacity (Coulomb Counting):

Q = ∫ I(t) dt

Example Calculation:

If a constant current of 10 A is drawn for 2 hours:

Q = 10 A * 2 hours = 20 Ah

Calculate:

Current (A):
Time (hours):

Result: N/A Ah

Energy Consumption

Formula for Energy Consumption:

Energy (Wh) = Voltage (V) * Current (A) * Time (h)

Example Calculation:

If the voltage is 400V, the current is 50A, and the usage time is 1 hour:

Energy (Wh) = 400V * 50A * 1h = 20000Wh = 20kWh

Calculate:

Voltage (V):
Current (A):
Time (h):

Result: N/A Wh

Internal Resistance

Formula for Internal Resistance:

R_int = (V_no-load - V_load) / I_load

Example Calculation:

If the no-load voltage is 400V, the load voltage is 390V, and the load current is 50A:

R_int = (400V - 390V) / 50A = 0.2Ω

Calculate:

No-load Voltage (V):
Load Voltage (V):
Load Current (A):

Result: N/A Ω

Hydraulic Pump and Pneumatic Circuit Maintenance

thedmtechnologies — Sat, 20 Jul 2024 04:55:52 +0000

Hydraulic Pump and Pneumatic Circuit Maintenance

Calculator
July 20, 2024

Pneumatic Circuit Maintenance

Select Maintenance Task:

Leak Detection and Repair

Formula for Air Leak Rate:

Q = (C / P) * sqrt(2 * P * ρ)

Where:

Q = Leak rate (cfm)
C = Flow coefficient
P = Pressure (psi)
ρ = Density of air (lb/ft³)

Calculate:

C:
P (psi):
ρ (lb/ft³):

Result: N/A cfm

Pressure Drop Calculation

Formula for Pressure Drop:

ΔP = (Q^2 * L * k) / d^5

Where:

ΔP = Pressure drop (psi)
Q = Flow rate (cfm)
L = Length of pipe (feet)
k = Friction factor (dimensionless)
d = Diameter of pipe (inches)

Calculate:

Q (cfm):
L (feet):
k:
d (inches):

Result: N/A psi

Flow Rate Calculation

Formula for Flow Rate:

Q = C * A * sqrt(2 * g * h)

Where:

Q = Flow rate (cfm)
C = Discharge coefficient (dimensionless)
A = Area of orifice (square feet)
g = Acceleration due to gravity (32.174 ft/s²)
h = Pressure head (feet)

Calculate:

C:
A (ft²):
h (feet):

Result: N/A cfm

Cycle Time Calculation

Formula for Cycle Time:

t = L / v

Where:

t = Cycle time (seconds)
L = Stroke length of the cylinder (inches or feet)
v = Velocity of the piston (inches/second or feet/second)

Calculate:

L (inches):
v (inches/second):

Result: N/A seconds

Force Calculation

Formula for Force Output:

F = P * A

Where:

F = Force (lbs)
P = Pressure (psi)
A = Area of the piston (square inches)

Calculate:

P (psi):
A (square inches):

Result: N/A lbs

Gear Parameter Calculations Gear Parameters (special-1)

thedmtechnologies — Thu, 18 Jul 2024 12:37:12 +0000

Gear Parameter Calculations Gear Parameters (special-1)

Maintenance Downloadable Formats
July 18, 2024

Gear Parameter Calculations

Gear Parameter Calculations Tooth Thickness to Span

thedmtechnologies — Thu, 18 Jul 2024 12:35:33 +0000

Gear Parameter Calculations Tooth Thickness to Span

Maintenance Downloadable Formats
July 18, 2024

Normal Tooth Thickness to Span Measurement (External Gears)

Gear Parameter Calculations Span to Tooth Thickness

thedmtechnologies — Thu, 18 Jul 2024 12:33:42 +0000

Gear Parameter Calculations Span to Tooth Thickness

Maintenance Downloadable Formats
July 18, 2024

DM Technologies

Cable Resistance Calculator

Cable Resistance Calculator

Cable Resistance Calculator

Input Data and Measurement

Formula

Calculated Resistance

Search

Recent Post

Categories

Comprehensive Electrical System Losses Analysis

Comprehensive Electrical System Losses Analysis

Comprehensive Electrical System Losses Analysis

Electrical System Losses Report

Input Data

Search

Recent Post

Categories

Factory Utility System Design

Factory Utility System Design

Factory Utility System Design

Introduction

Utility System Design

Results:

Air Compressor System:

Diesel Generator (DG) System:

Effluent Treatment Plant (ETP):

Sewage Treatment Plant (STP):

Water Treatment Plant (WTP):

HVAC System:

Power Line Capacity:

TNEB Bill Calculation:

Search

Recent Post

Categories

Electrical Manitenance calculation

Electrical Manitenance calculation

Electrical Manitenance calculation

Electrical Circuit Maintenance

Resistance Calculation

Example Calculation:

Calculate:

Current Calculation

Example Calculation:

Calculate:

Power Calculation

Example Calculation:

Calculate:

Horsepower Calculation

Example Calculation:

Calculate:

Kilowatt Calculation

Example Calculation:

Calculate:

Kilovolt-Ampere Calculation

Example Calculation:

Calculate:

Motor Poles Calculation

Example Calculation:

Calculate:

Search

Recent Post

Categories

5 Why Analysis with Action Plan

5 Why Analysis with Action Plan

5 Why Analysis with Action Plan

Analysis Tool

Why-Why Analysis Input

Why-Why Analysis Output

5 Whys Analysis Input

5 Whys Analysis Output

Fishbone Diagram Input

Fishbone Diagram Output

Generate Final Report

Search

Recent Post

Categories

EV Battery Maintenance

EV Battery Maintenance

EV Battery Maintenance