TypeVMN-html.html

Corporate Office

1717 Chicago Avenue

Riverside, California 92507-2364

Phone: (951) 788-1700

Fax: (951) 369-1151

Applications Engineering and Sales

17271 North Umpqua Hwy.

Roseburg, Oregon 97470-9422

Phone: (541) 496-0700

Fax: (541) 496-0408

L-428.0116

e-mail: caddock@caddock.com • web: www.caddock.com

For Caddock Distributors listed by country see caddock.com/contact/dist.html

Part Number

VMN4-2M-400
VMN4-2M-400-5
VMN4-5M-500
VMN4-5M-500-5

450 Volts
450 Volts
700 Volts
700 Volts

600 Volts
600 Volts
900 Volts
900 Volts

400 : 1
400 : 1
500 : 1
500 : 1

1.995 Meg
1.995 Meg
4.990 Meg
4.990 Meg

5 K
5 K

10 K
10 K

2 Meg
2 Meg
5 Meg
5 Meg

0.1%

0.02%

0.1%

0.02%

10 ppm/°C

5 ppm/°C

10 ppm/°C

5 ppm/°C

0.03 ppm/V
0.03 ppm/V
0.02 ppm/V
0.02 ppm/V

1,000 Volts
1,000 Volts
1,500 Volts
1,500 Volts

10 kV
10 kV
10 kV
10 kV

Normal

Operating

Voltage

(AC rms)

Maximum

Operating

Voltage

(AC rms)

Voltage

Divider

Ratio

Resistance

Total

Resistance

(R1 + R2)

Ratio

Tol.

Ratio

T.C.

Ratio

V.C.

Overload

Voltage

Rating

Impulse

(Surge)

Voltage

Type VMN Voltage Monitoring Resistor Networks

Transient Tolerant

Voltage Dividers for Industrial Power Quality and Power Consumption Metering Applications

Ratio Tolerance of 0.1% or 0.02%, Ratio TC of 10 ppm/°C or 5 ppm/°C

The Type VMN Transient Tolerant Voltage Monitoring Networks are designed

for use in the voltage measurement circuits of Power Quality Monitoring

Equipment, Kilowatt-Hour Meters, and other Power and Energy Measurement

Equipment, where precision electrical service voltage monitoring is required.
The VMN Networks are manufactured with Tetrinox®, Caddock’s Ultra-Stable

Low-TC Resistance Film System. The Tetrinox film system, combined with

Caddock’s Ceramic Sandwich Resistor Network construction, provides

outstanding long-term stability in industrial applications with electrical surges,

transient conditions, and high humidity exposure.
For Custom Type VMN Voltage Monitoring Networks developed to meet your

program requirements, contact Applications Engineering at Caddock.

Specifications

Ratio: (R1+R2) : R2 (Voltage Divider Ratio)
Ratio Tolerance: measured at 100 Volts at +23°C ambient
Ratio T.C.: measured at -40°C and +85°C, ref. to +25°C
Ratio V.C.: measured at 100 Volts DC and 600 Volts DC
Absolute Tolerance: ±1%
Absolute T.C.: 30 ppm/°C, measured at -40°C and +85°C,

referenced to +25°C
Ratio Stability:
Normal Operating Voltage applied to R1 and R2 connected

in series at +85°C. Change in Ratio after 2,000 hours is

±0.02% maximum.
Maximum Operating Voltage applied to R1 and R2

connected in series at +85°C. Change in Ratio after 2,000 hrs

is ±0.04% maximum.
Overload Voltage and Stability: Overload Voltage applied

for 10 seconds to R1 and R2 connected in series at +25°C.

Change in Ratio is 0.01% maximum.
Impulse Voltage and Stability: 1.2/50 microsecond

waveform. The impulse voltage wave shape shall have a

rise time of 1.2 microseconds to 90% of the impulse voltage

peak, followed by a fall time of 50 microseconds to 50% of the

impulse voltage peak. Impulse applied to Pin 1 (with R1 and

R2 connected in series), with Pin 5 held near ground. After

20 pulses applied, the Change in Ratio is 0.01% maximum.
Operating Temperature Range: -40°C to +85°C

3
4

.050 (1.27)

.100 (2.54)

.600 (15.24)

.700 (17.78)
.900 (22.86)

.150 ±.040

(3.81 ±1.02)

1.000 ±.020

(25.40 ±.51)

.510 ±.020

(12.95 ±.51)

Seated Height

.110 Max.

(2.79)

CADDOCK

VMN4-5M-500-5

1432

See Lead Form

Detail Note

Isolation Dimension D:

Minimum distance between

metal portions of Pins 2 and 3

is 0.414 inch (10.51 mm)

Lead Form Detail Note:

The lead form detail provides

interference in the circuit board

hole to achieve a vertical mount

of the device. Recommended

circuit board hole is nominally

0.039 inch (1.00 mm).

.020

.002

(0.51

.05)

New